MONTE VISTA WATER DISTRICT 2015 URBAN WATER MANAGEMENT PLAN

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1 MONTE VISTA WATER DISTRICT 2015 URBAN WATER MANAGEMENT PLAN PUBLIC REVIEW DRAFT MAY 2016 Prepared by Monte Vista Water District Staff: General Manager Public Affairs Director/ Water Use Efficiency Practitioner Manager of Engineering, Operations, & Maintenance Water Systems Supervisor Mark N. Kinsey Justin Scott-Coe Van M. Jew, P.E. Henry Aceves Central Avenue Montclair, CA (909)

2 TABLE OF CONTENTS EXECUTIVE SUMMARY... ES ACRONYMS AND ABBREVIATIONS... ACR SECTION 1 INTRODUCTION Purpose and Overview Preparation Plan Adoption, Submittal, and Implementation Local Agency Coordination and Public Participation Regional Alliance SECTION 2 WATER SYSTEM DESCRIPTION District History and Purpose Service Area Characteristics Location Climate Population Land Use District Water Distribution System SECTION 3 WATER SYSTEM DEMANDS Recent Water Demand Trends Retail Demand Projections Land Use Based Model Past, Current, and Projected Water Demands System Water Loss Lower Income Housing Demands Demand Reduction Requirements Baseline Gallons Per Capita Per Day Target Gallons Per Capita Per Day Compliance with 2015 Interim Urban Water Use Target Wholesale Agency Assistance in Meeting Urban Water Use Target SECTION 4 WATER SYSTEM SUPPLIES Water Supply Overview Chino Groundwater Basin Basin Overview Chino Basin Watermaster State Water Project Metropolitan Water District of Southern California Inland Empire Utilities Agency Water Facilities Authority San Antonio Water Company Surface Water Supply San Antonio Canyon Groundwater Supply Inland Empire Utilities Agency Recycled Water Wastewater Treatment Existing Recycled Water Program Supplies Current and Projected Recycled Water Use in District Service Area Public Review Draft ACR-1 May 2016

3 4.6 Planned Water Supply Enhancement Projects Capital Improvement Plan Groundwater Recharge Opportunities Partnership Opportunities Transfer and Exchange Opportunities Recycled Water Opportunities Desalinated Water Opportunities SECTION 5 WATER SUPPLY RELIABILITY Reliability of District Water Supplies Chino Groundwater Basin Supply Reliability Water Facilities Authority Supply Reliability Recycled Water Supply Reliability San Antonio Water Company Supply Reliability Water Quality Impacts on Reliability Chino Groundwater Basin Water Quality Water Facilities Authority Water Quality San Antonio Water Company Water Quality Recycled Water Quality Impact on Water Management Strategies and Supply Reliability Climatic Impacts on Reliability Demand Modifications during Dry Years Climate Change Impacts on Water Supply Reliability Reliability Analyses Normal, Single, Multiple Dry Years SECTION 6 WATER DEMAND MANAGEMENT Legislative and Regulatory Requirements California Urban Water Conservation Council Assembly Bill The Water Conservation Act of Assembly Bill Demand Management Measure Implementation Demand Management Planning Regional Conservation Programs District Conservation Programs Potential Customer Sector and Economic Impacts SECTION 7 WATER SHORTAGE CONTINGENCY PLAN Water Shortage Contingency Ordinance Stages of Action Regional Water Shortage Contingency Planning MWD s Water Surplus and Drought Management Plan IEUA s Drought Plan Minimum Short-Term Supply Availability Catastrophic Supply Interruption Plan Water Shortage Emergency Response Penalties and Consumption Reduction Methods Revenue and Expenditure Impacts Mechanisms to Determine Actual Reductions in Water Use May 2016 ACR-2 Public Review Draft

4 APPENDICES Appendix A: Urban Water Management Planning Act of 1983 as Amended to 2015 Appendix B: Water Conservation Act of 2009 (SBX7-7) Appendix C: Department of Water Resources Checklist Appendix D: Department of Water Resources and SBX 7-7 Standardized Tables Appendix E: Notifications, Notice of Public Hearing, and Resolution for Plan Adoption Appendix F: Department of Water Resources Population Tool Verification of Data Appendix G: Land Use Based Water Demand Model Technical Memorandum Appendix H: Fiscal Year Ending 2015 Water System Audit Appendix I: Indirect Recycled Water Reuse Calculation Appendix J: Chino Basin Judgment and Optimum Basin Management Program Implementation Plan Appendix K: Summary of Chino Groundwater Basin Management Appendix L: Monte Vista Water District 2011 Recycled Water Master Plan Appendix M: CUWCC Best Management Practices Annual Reports and Coverage Reports Appendix N: Regional Water Use Efficiency Program Water Savings Appendix O: Ordinance 33: Establishing Water Use Efficiency Best Practices and Staged Water Supply Shortage Measures TABLES Table 1-1: Local Agency and Organization Coordination Table 2-1: Service Area ETo, Temperatures and Rainfall Table 2-2: Service Area Population Current and Projected Table 2-3: Active Groundwater Wells and Total Production Capacity (mgd) Table 3-1: District Water Loss 2015 (AFY) Table 3-2: Current and Projected Water Demand by Sector (AFY) Table 3-3: Baseline Gallons Per Capita Per Day Calculation 10-Year Range Table 3-4: District Urban Water Use Targets Table 3-5: Baseline Gallons Per Capita Per Day Calculation 5-Year Range Table 3-6: Compliance with 2015 Interim Urban Water Use Target Table 4-1: Water Supplies Current and Projected (AFY) Table 4-2: Investments in Local Water Supply Table 4-3: Chino Groundwater Basin Total Annual Production Right, Actual Production and Underproduction FYE 2015 (AFY) Table 4-4: Groundwater Volume Pumped (AFY) Table 4-5: Estimated Wastewater Collection from Retail Service Area (AFY) Table 4-6: 2015 Recycled Water Use vs UWMP Projection (AFY) Table 4-7: Current and Projected Recycled Water Uses (AFY) Table 4-8: Current and Projected Regional Recycled Water Supplies and Usage (AFY) Table 4-9: Ten-Step Process for Recycled Water Customer Development Table 5-1: Supply Reliability as Percentage of Normal Water Year Supply Table 5-2: Bases of Water Year Data Table 5-3: Supply and Demand Comparison Normal Year (AFY) Public Review Draft ACR-3 May 2016

5 Table 5-4: Supply and Demand Comparison Single Dry Year (AFY) Table 5-5: Supply and Demand Comparison Multiple Dry Years (AFY) Table 6-1: Budget-Based Tiered Rate Structure Assumptions Table 6-2: Best Practice Notifications and Penalties Table 7-1: Water Shortage Stages and Demand Reductions Table 7-2: Water Shortage Phase Mandatory Prohibitions Table 7-3: Minimum Short-Term Retail and Wholesale Supply Availability (AFY) Table 7-4: Per Capita Health and Safety Water Quantity Calculations Table 7-5: Penalties and Procedures for Ordinance 33 Violations FIGURES Figure 2-1: District Retail and Wholesale Service Area Figure 2-2: Existing Land Uses Retail Service Area Figure 2-3: Future Land Uses Retail Service Area Figure 3-1: District Retail Customer Demand Figure 4-1: Chino Groundwater Basin Boundaries and Water Features Figure 4-2: Chino Groundwater Basins with Management Zones Figure 4-3: Metropolitan Water District of Southern California Boundaries and Member Agencies Figure 4-4: Inland Empire Utilities Agency Boundaries Figure 4-5: Water Facilities Authority Member Agencies Figure 4-6: San Antonio Water Company Water Supply Sources Figure 4-7: IEUA Regional Recycled Water Distribution System Current and Projected Figure 4-8: Existing Retail Recycled Water Distribution System Figure 6-1: District Website Conservation Section ACRONYMS and ABBREVIATIONS AB AF AFY ASR BMP CBWCD CCF CCWRF CDA CIP CUWCC CWC DBCP DMM DWR DYY e.g. ETo Assembly Bill Acre-Foot/Feet Acre-Feet per Year Aquifer Storage and Recovery Best Management Practice Chino Basin Water Conservation District Hundred Cubic Feet Carbon Canyon Water Reclamation Facility Chino Basin Desalter Authority Capital Improvement Plan California Urban Water Conservation Council California Water Code Dibromochloropropane Demand Management Measure California Department of Water Resources Dry Year Yield For Example Evapotranspiration May 2016 ACR-4 Public Review Draft

6 EPA FY FYE GPCD gpf gpm IEUA IRP LEAP LHMP MCL mgd mg/l MI MOU MWD MZ OBMP OSY ppm ppt RP SAWCo SAWPA SB SCADA State Board SWP TDS ULFT USC UWMP WFA WET WEWAC WSDM U.S. Environmental Protection Agency Fiscal Year Fiscal Year Ending Gallons Per Capita Per Day Gallons Per Flush Gallons Per Minute Inland Empire Utilities Agency Integrated Resources Plan Landscape Evaluation/Audit Program Local Hazard Mitigation Plan Maximum Contaminant Level Million Gallons per Day Milligrams Per Liter Miner s Inch(es) Memorandum of Understanding Regarding Urban Water Use in California Metropolitan Water District of Southern California Management Zone Optimum Basin Management Program Operating Safe Yield Parts Per Million Parts Per Trillion Regional Plant San Antonio Water Company Santa Ana Watershed Project Authority Senate Bill Supervisory Control Data Acquisition System State Water Resources Control Board State Water Project Total Dissolved Solids Ultra Low Flush Toilet Urban Stakeholder Committee Urban Water Management Plan Water Facilities Authority Water Education for Teachers Water Education Water Awareness Committee Water Surplus and Drought Management 20x2020 Water Conservation Act of 2009 (SBX 7-7) Urban Water Use Reduction Requirements Act California Urban Water Management Planning Act of 1983 Basin Chino Groundwater Basin Company Monte Vista Irrigation Company District Monte Vista Water District Guidebook Guidebook to Assist Urban Water Suppliers to Prepare a 2015 Urban Water Management Plan Max Maximum Methodologies Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (2016 Update) Min Minimum Plan Urban Water Management Plan Watermaster Chino Basin Watermaster Public Review Draft ACR-5 May 2016

7 EXECUTIVE SUMMARY California urban water providers are required by the Urban Water Management Planning Act to develop an Urban Water Management Plan (UWMP or Plan) every five years to ensure they have sufficient water supplies available to meet the long-term needs of its various categories of customers during normal, dry, or multiple-dry years. The Water Conservation Act of 2009 (SB X7-7) added additional UWMP reporting requirements. The Monte Vista Water District (District) 2015 UWMP has been prepared in compliance with these requirements. In summary, the water reliability analysis in Section 5 of this Plan indicates the District can expect its available supplies to significantly exceed anticipated demands over the 25-year planning period. As a result of these surplus supplies, the District should not experience any problems in meetings its demands during normal, single, or multiple dry-year periods over the next 25 years. Service Area and System Descriptions The District is a county water district officially formed in 1927 to provide domestic water service to a primarily agricultural area. In the early days, groundwater was the major water supply. Gradually, additional water supplies were identified and developed, including connections to the Colorado River Aqueduct, the creation of the Water Facilities Authority (WFA) to treat northern California imported surface water, the acquisitions of the Monte Vista Irrigation Company and shares in the San Antonio Water Company (SAWCO), and development of a recycled water distribution system. In addition to its retail customers, the District provides wholesale water supply to the City of Chino Hills. At the current time, the District relies on approximately 75 percent of its water supply from groundwater and other local supplies and 25 percent from imported water. The District s 2008 Water Master Plan addresses its water system, supply, and storage infrastructure needs for the next 30 years. The District's 9.56-square-mile retail service area includes the City of Montclair, portions of the City of Chino, and unincorporated areas of San Bernardino County. The local climate is generally Mediterranean and semi-arid, with little or no summer rainfall. The District s combined retail and wholesale service area population over the next 25 years is projected to grow 19 percent (from 131,794 to 157,244) by Growth in the retail service area includes a significant development of high density multi-family residential properties within the North Montclair Downtown Specific Plan area of the City of Montclair. The District currently has 12 active groundwater wells with a combined capacity of approximately 28.2 million gallons per day (mgd). The District's retail water distribution system is comprised of four pressure zones, 198 miles of pipelines, six reservoirs, seven booster stations, three hydrogenerators, and six emergency interconnections with neighboring water agencies. Water is transported to Chino Hills via transmission mains and delivered through two turnout facilities. Public Review Draft ES-1 May 2016

8 Water System Demands Over the past ten years, the District s retail customers have achieved a significant and sustained reduction in demands. As of the writing of this report (May 2016), retail customer demands are 36 percent less than in The District used a Land Use Based Water Demand Model for projecting future retail water demands through Although historical wholesale demand by Chino Hills has ranged between 8,000 and 14,000 AFY, the District will use its full contractual obligation of mgd, or 22,650 AFY, in estimating potential future demands by Chino Hills on the District s water system. Past, Current, and Projected Water Demand (AFY) Sector Total Retail Potable Demand 9,110 11,519 11,756 12,060 12,361 12,645 Wholesale Potable Demand 6,933 22,650 22,650 22,650 22,650 22,650 Total Potable Demand 16,043 34,169 34,406 34,710 35,011 35,295 Recycled Water 791 1, ,019 1,069 1,069 Total Water Demand 16,834 35,200 35,396 35,730 36,081 36,364 The Water Conservation Act of 2009 requires all California urban water agencies to set and meet certain demand reduction targets, measured in gallons per capita per day (GPCD), in order to assist the state in reducing urban water use by 20 percent by The District s Baseline GPCD, the 10-year GPCD average of the years , is 209 GPCD. Opting for a simple 20 percent reduction in total demand, the District s Target GPCD for 2020 is 167 GPCD and its Interim Target GPCD for 2015 is 188 GPCD. District Urban Water Use Targets and 2015 Compliance (GPCD) Baseline Water Use ( ) 2020 Water Use Target (-20%) 2015 Interim Water Use Target (-10%) 2015 District Water Use Reduction from Baseline % The District is required to report in its 2015 UWMP whether we achieved our 2015 Interim Urban Water Use Target of 10 percent reduction from Baseline GPCD. As shown above, District customers used 141 GPCD in 2015, or 33 percent below our Baseline GPCD, far exceeding our regulatory target of 188 GPCD. May 2016 ES-2 Public Review Draft

9 Water System Supplies Over the past 15 years, Monte Vista Water District has invested over $50 million in its infrastructure and has increased its water supply capacity to over 50 million gallons per day. Key investments in local groundwater, surface water, and recycled water have focused on building a diverse, drought-resilient water supply portfolio and reducing reliance on imported water. The District is dependent on four sources for its long-term water supply: Groundwater produced from the Chino Groundwater Basin, an adjudicated basin managed by the Chino Basin Watermaster; Imported State Water Project surface water received from the Metropolitan Water District of Southern California (MWD) through the Inland Empire Utilities Agency (IEUA) and the WFA; Entitlement water deliveries from SAWCO, including groundwater produced from local adjudicated groundwater basins and surface water produced from the San Antonio Creek Watershed; and, Recycled water from IEUA. Current and Projected Water Supplies Water Supply Sources Chino Groundwater Basin 8,406 28,183 28,183 28,183 28,183 28,183 Water Facilities Authority 7,025 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company IEUA Recycled Water 791 1, ,019 1,069 1,069 Total Water Supply 16,833 51,790 51,749 51,778 51,828 51,828 Water Supply Reliability Reliability is a measure of a water service system s expected success in managing water shortages. In addition to climate, other factors that can cause supply shortages are natural disasters such as earthquakes, chemical spills, energy outages, and water quality issues. The District safeguards the quality of its water supply by exceeding state and federal monitoring requirements. The District blends its various sources of water to ensure that the quality of drinking water is in strict compliance with standards. Additionally, local and imported water supplies are being constantly monitored and remediated through regional programs. Public Review Draft ES-3 May 2016

10 The reliability of Chino Basin groundwater is based on long-term hydrology and is not directly impacted by single year or multi-year droughts. SAWCo s local surface water supplies can be impacted by short-term drought events. Northern California climate can impact imported surface water supply reliability, but MWD has mitigated these impacts. Recycled water is considered drought proof and is not impacted by climate. The following tables compare the District s current and projected water supplies and demands in normal, single dry-year and multiple dry-year scenarios for the District. These projections demonstrate that the District can expect its available supplies to significantly exceed anticipated demands over the 25-year planning period. As a result of these surplus supplies, the District should not experience any problems in meetings its demands during normal, single or multiple dry year scenarios during the next 25 years. Supply and Demand Comparisons (AFY) Normal Year Total Supply 51,790 51,749 51,778 51,828 51,828 Total Demand 35,200 35,396 35,730 36,081 36,364 Difference 16,590 16,353 16,048 15,748 15,464 Single Dry Year Total Supply 51,646 51,605 51,634 51,684 51,684 Total Demand 35,200 35,396 35,730 36,081 36,364 Difference 16,446 16,209 15,904 15,604 15,320 Multiple Dry Years Year 1 Year 2 Year 3 Total Supply 51,646 51,605 51,634 51,684 51,684 Total Demand 35,200 35,396 35,730 36,081 36,364 Difference 16,446 16,209 15,904 15,604 15,320 Total Supply 51,547 51,507 51,536 51,586 51,586 Total Demand 35,200 35,396 35,730 36,081 36,364 Difference 16,347 16,111 15,806 15,505 15,221 Total Supply 51,547 51,507 51,536 51,586 51,586 Total Demand 35,200 35,396 35,730 36,081 36,364 Difference 16,347 16,111 15,806 15,505 15,221 May 2016 ES-4 Public Review Draft

11 Water Demand Management The District is a regional leader in developing and implementing proactive demand management programs that protect existing water resources so that adequate water supplies will be available for sustainable future growth. Investments in reliable local resources have been critical to maintaining current and future water supplies. Equally critical is the promotion of water use efficiency as an integral component of current and future water strategy for the service area. The District is a charter signatory to the California Urban Water Conservation Council s Memorandum of Understanding Regarding Urban Water Conservation and has maintained its compliance with its Best Management Practices (BMPs see Appendix M). In addition, the District is required to comply with the Water Conservation Act of 2009 s requirements to set and then to meet its urban water use reduction targets of 188 GPCD by 2015 and 167 GPCD by The District is currently meeting its targets, both individually and regionally, and plans to continue assisting customers in maintaining and enhancing their current water use efficiency practices. The District was an early adopter in implementing a budget-based tiered rate structure which incentivizes efficient residential and landscape water use. In addition to maintaining and enhancing its local conservation programs, the District will continue to participate in IEUA s Regional Conservation Workgroup, the Water Education Water Awareness Committee, and Chino Basin Water Conservation District programs. Water Shortage Contingency Plan The District s Water Shortage Contingency Plan is incorporated into District Ordinance 33 (Appendix O), which establishes year-round water use efficiency best practices and staged water supply shortage measures. This plan addresses emergency shortages, including catastrophic interruptions, and contains mandatory prohibitions, penalties, and consumption reduction methods. The District s stages of action present the measures by which customers are required to implement mandatory water conservation practices during a declared water shortage. The District may declare a shortage due to imported water supply cutbacks by MWD, as well as extended drought, equipment failure, act of terrorism, and/or natural disaster. During periods of water supply shortages, state-mandated water use restrictions, or emergency conditions, the District may require its customers to reduce demands below levels projected by the current rate structure. This circumstance may result in insufficient revenues to meet necessary expenses. In order to protect the District financially in such circumstances, the District recently adopted demand reduction rates as part of its normal rate adoption process in order to ensure financial stability and high quality water service. Public Review Draft ES-5 May 2016

12 Section 1 SECTION 1 INTRODUCTION 1.1 PURPOSE AND OVERVIEW California urban water providers are required by state law to develop an Urban Water Management Plan (UWMP) to ensure they have sufficient water supplies available to meet the long-term needs of its various categories of customers during normal, dry, or multiple-dry years. State of California Water Code (CWC) Sections through 10656, known as the Urban Water Management Planning Act (Act), requires urban water suppliers (providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre-feet (AF) of water annually) to develop an UWMP every five years in the years ending in zero and five. Senate Bill (SB) X7-7 (2009), known as the Water Conservation Act of 2009, added additional UWMP reporting requirements. In the Act, the California Legislature declared that the waters of the state are a limited and renewable resource subject to ever increasing demands; that the conservation and efficient use of urban water supplies are of statewide concern; that successful implementation of plans is best accomplished at the local level; that conservation and efficient use of water shall be actively pursued to protect both the people of the state and their water resources; that conservation and efficient use of urban water supplies shall be a guiding criterion in public decisions; and that urban water suppliers shall be required to develop water management plans to achieve conservation and efficient use. The Monte Vista Water District (District) UWMP has been prepared in compliance with the requirements of the Act as amended through 2015 (Appendix A) 2, as well as the additional reporting requirements of the Water Conservation Act of 2009 (Appendix B) 3. The District s 2015 UWMP is an update of its 2010 UWMP, and incorporates significant information from the District s 2008 Water Master Plan, 2011 Recycled Water Master Plan, and other local and regional planning documents. The District relies on the California Department of Water Resources s (DWR) Guidebook to Assist Urban Water Suppliers to Prepare a (March 2016) for the Plan s organization and DWR s Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (updated February 2016) for its compliance with the Water Conservation Act of A completed DWR 2015 UWMP Checklist, which provides an index showing where Water Code requirements are met in this plan, is included as Appendix C. Appendix D includes reproductions of the standardized tables 4 submitted electronically to DWR along with the 2015 UWMP. All water use and supply data provided in the plan are based on the fiscal year (July through June). 1 Public Water System Number CWC, Division 6, Part 2.6; 10610, et. seq. Established by AB 797 (1983). Legislation amending the Act since 2010 include AB 2409 (2010), AB 2067 (2014), SB 1420 (2014), and SB 1036 (2014). 3 CWC, Division 6, Part 2.55; 10608, et. seq. 4 Tables and content in this plan present the same information as what is included in the DWR standardized tables. However, the table numbers in the plan are not the same as DWR s standardized table numbers. Alignment between the 2015 UWMP s tables and DWR s standardized tables are indicated in both sets of tables. Public Review Draft 1-1 May 2016

13 Section 1 Monte Vista Water District The UWMP is intended to serve as a general, flexible, and open-ended document that periodically can be updated to reflect changes in regional water supply trends, and conservation and water use efficiency policies. This plan, along with the District s Water Master Plan and other planning documents, will be used by District staff to guide water use and management efforts through the year 2020, when the UWMP is required to be updated. The Plan is organized into the following sections: Introduction Water System Description Water System Demands Water System Supplies Water Supply Reliability Water Demand Management Water Shortage Contingency Plan In summary, the water reliability analysis in Section 5 of this plan indicates the District can expect its available supplies to significantly exceed anticipated demands over the 25-year planning period. As a result of these surplus supplies, the District should not experience any problems in meetings its demands during normal, single, or multiple dryyear periods over the next 25 years. 1.2 PREPARATION Plan Adoption, Submittal, and Implementation Water Code section 10644(a) requires the District to prepare and adopt the UWMP on or before December 31, and file with the DWR within 30 days after adoption. AB 2067 (2014) provides a six-month extension for adoption of the 2015 UWMP until July 1, The District s 2015 UWMP was adopted by resolution of the Board of Directors on June 22, 2016, following a public hearing which included discussion of the District s method of revising its urban water use targets under the Water Conservation Act of 2009, certification of meeting its 2015 Interim Urban Water Use Target, and plan to meet its 2020 Urban Water Use Target, as well as the potential economic impacts of meeting these targets (see Sections 3 and 6). This Plan was submitted to local agencies within which the District provides water service, DWR, and the State Library within 30 days of Board adoption. Copies of the Notice of Public Hearing and the Resolution of Plan Adoption are included in Appendix E. The Draft Plan was made available to the public prior to the Public Hearing and the final adopted Plan was made available to the public within thirty (30) days following District Board approval. This Plan will be used by District staff to guide the District s water use planning and efficiency efforts through 2020 and beyond. May Public Review Draft

14 Section Local Agency Coordination and Public Participation An important component of developing an UWMP is coordination with local public and private stakeholders. These include the following entities: Cities and counties that receive water service through the District and direct local land use planning efforts; Regional water agencies who work in partnership with the District on regional water resource management strategies; and, Local organizations that reflect diverse social, cultural, and economic elements of the District s service population. Recognizing the importance of this coordination, and in compliance with Water Code Sections 10621(b), 10631(k), and 10642, the District sent letters to the cities of Montclair, Chino, and Chino Hills, to San Bernardino County, and to 11 local community stakeholder organizations in mid-december 2015, notifying them of the District s intent to update its UWMP for 2015 and providing them an opportunity to participate. The District has also communicated with eight additional neighboring cities and local water agencies concerning the District s progress in updating its Plan. A wide range of information and data was obtained, discussed, and used from many of these agencies to assist in the preparation of the Plan. Additionally, these agencies, organizations, and entities were notified of the public hearing and the availability of a draft 2015 UWMP for comment prior to its adoption. A listing of the agencies, organizations, and entities invited to participate in the development of the District s UWMP are listed in Table 1-1. Copies of notifications are included in Appendix E Regional Alliance In 2011, the District signed a Memorandum of Understanding for establishing a Regional Alliance to comply with the Water Conservation Act of 2009 (SBX 7-7). SB X 7-7 provides a regional compliance option, where a group of agencies that regionally coordinate conservation efforts can set collective urban water use targets and determine regional methods to achieve said targets through a Regional Alliance. Many of the District s conservation activities are implemented on a regional basis (see Section 6). Other members of the Regional Alliance include the cities of Chino, Chino Hills, Ontario, and Upland, Cucamonga Valley Water District, Fontana Water Company, and San Antonio Water Company. For the Regional Alliance report regarding SBX 7-7 regional compliance, please see Inland Empire Utilities Agency s 2015 UWMP. Public Review Draft 1-3 May 2016

15 Section 1 Monte Vista Water District Table 1-1: Local Agency and Organization Coordination Local Agencies Receiving Water Service from District (Required) 60-Day Notice Notice of Public Hearing City of Chino X X City of Chino Hills X X City of Montclair X X County of San Bernardino X X Local Agencies Providing Wholesale Service to District Inland Empire Utilities Agency X X Metropolitan Water District of Southern California X X San Antonio Water Company X X Water Facilities Authority X X Local Agencies Associated with Regional Water Planning Chino Basin Water Conservation District X X Chino Basin Watermaster X X Santa Ana Regional Water Quality Control Board X X Santa Ana Watershed Project Authority X X Local Community and Stakeholder Organizations Building Industry of America, Baldy View Chapter X X Chaffey Joint Union High School District X X Chino Valley Chamber of Commerce X X Chino Valley Unified School District X X Inland Empire Economic Partnership X X Montclair Chamber of Commerce X X Montclair Community Collaborative X X Neighborhood Partnership Housing Services X X Ontario Montclair School District X X San Bernardino County Economic Development Agency X X San Bernardino County Superintendent of Schools X X Aligns with data in DWR Standardized Tables 10-1 R and 10-1 W. May Public Review Draft

16 SECTION 2 WATER SYSTEM DESCRIPTION 2.1 DISTRICT HISTORY AND PURPOSE Monte Vista Water District (District) is a county water district that was officially formed in 1927 under CWC, County Water District Law, Division 12, Section et seq. The District s origins date back to the early 1900s, when a land developer first surveyed a tract of land bounded by the railroad tracks and Phillips Street to the north and south, and the wash and State Street to the east and west. This area of land was then known as the Monte Vista Land Tract and was used largely for agricultural purposes, primarily citrus orchard farming. Water that was needed for irrigation for the numerous orange and lemon groves in the area was provided by the Limited Mutual Water Company. Limited Mutual Water Company later made the decision to provide domestic water service, and a number of other companies began to express a similar interest. The desire to form a water district under state law led to the election and formation of the District. After its formation, the District began the long process of purchasing and accumulating facilities for providing domestic water service, including reservoirs, pipelines, pumps, wells, and other water companies. Land was purchased for facility development, and several annexations were accomplished over the decades, the largest of which occurring in 1989 with the addition of a portion of San Bernardino County Water Works #8 service area. This annexation included a population of over 12,000, increasing the total population served by the District to over 46,000 and resulting in peak demand of 14 million gallons per day (mgd) in the 1990s. In the early days, groundwater was the major water supply. Enough naturally occurring recharge meant the groundwater was sufficient to meet the needs of the area. Gradually, additional water supplies were identified and developed to meet periods of increased demand and also to blend with high-nitrate groundwater supplies in order to meet state and federal regulatory standards. After the construction of the Colorado River Aqueduct in 1935, connections to that supply source assisted in bringing supplemental water to the rapidly growing region. In the 1980s, the District, along with the cities of Chino, Chino Hills, Ontario, and Upland, entered into a joint powers authority agreement to create the Water Facilities Authority (WFA) treatment plant. The WFA can treat up to 81 mgd of surface water imported from northern California through the State Water Project. More recently, due to the increased unreliability of imported water supplies, the District has made key acquisitions to further develop its local water supply portfolio. In February 1999, the District purchased the Monte Vista Irrigation Company, a private water company founded in 1908, previously involved with agricultural and domestic water supply to the cities of Montclair and Ontario. Through this acquisition, the District increased its production rights in the Chino Groundwater Basin by approximately 1,000 acre-feet per year (AFY). In 2010, the District purchased 300 shares in the San Antonio Water Company, a local mutual stock water company, providing access to approximately 800 AFY of additional water supply. Public Review Draft 2-1 May 2016

17 Section 2 Monte Vista Water District Finally, the District has successfully implemented a recycled water distribution system. The system currently delivers 300 AFY of recycled water through a separate non-potable distribution system for landscape irrigation. The District eventually plans to deliver 430 AFY of recycled water to offset demand on its potable water system. At the current time, the District relies on approximately 75 percent of its water supply from groundwater and other local supplies and 25 percent from imported water. These percentages vary according to changing supply conditions. In addition to its retail customers, the District provides wholesale water supply to the City of Chino Hills. Under the provisions of a long-term agreement executed in July 1998, the District is contracted to deliver to Chino Hills up to mgd. Since initiation of full deliveries in 1999, the District has delivered between 7,500 and 14,000 AFY of water to the City under the terms of the agreement. In 2009, the District Board of Directors adopted the District s 2008 Water Master Plan as its Capital Improvement Plan (CIP) document, addressing water system, supply, and storage infrastructure needs for the next 30 years. The District s Financial Master Plan was most recently updated in January 2016 to provide a mechanism for funding the identified capital projects at a cost of nearly $100 million. Since adoption of its CIP, the District has completed replacement of several miles of pipeline, the construction of three groundwater wells, the development of a recycled water distribution system, and the purchase of San Antonio Water Company stock. The operation of the District is governed by a Board of Directors, comprised of five members, elected at large within the District. The Board appoints, by majority vote, a General Manager/Secretary, Manager of Finance and Administration, and Legal Counsel, who serve at the pleasure of the Board. The District currently has 36 full-time employees who work in the areas of engineering, operations, maintenance, field service, customer service, billing, finance, human resources, public affairs and administration. 2.2 SERVICE AREA CHARACTERISTICS Location The District's retail service area contains approximately 6,120 acres (9.56 square miles) and includes the City of Montclair and portions of the City of Chino and unincorporated county areas. The retail service area lies adjacent to the westerly boundary of San Bernardino County, bordered by the cities of Upland and Claremont to the north, Ontario to the east, Chino, Chino Hills, and unincorporated areas to the south, and Pomona in Los Angeles County to the west. Interstate 10 runs east and west through the northern portion of the water service area and California State Route 60 runs east and west through the southern portion. The retail service area lies between 700 and 1,250 feet above mean sea level, rising gently northward toward the San Bernardino Mountains, approximately six miles from the northernmost boundary of the District. May Public Review Draft

18 Figure 2-1: District Retail and Wholesale Service Area Public Review Draft 2-3 May 2016

19 Section 2 Monte Vista Water District The District s wholesale service area is comprised of the City of Chino Hills, which was incorporated in 1991 and currently encompasses 46 square miles. See Figure 2-1 for a map of the District s retail and wholesale service areas Climate The District is located in a general drainage area known as the Chino Basin, the largest such basin in the upper Santa Ana River Watershed. The Basin s southern California climate is generally Mediterranean, with low historical precipitation rates with wide periodic variations. The local climatological pattern is interrupted infrequently by periods of extremely hot weather, winter storms, and Santa Ana winds. Average ETo 1 (inches) Temperature 2 (Fahrenheit) Table 2-1: Service Area ETo, Temperatures and Rainfall Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total/ Average Max Min Rainfall 2 (inches) California Irrigation Management Information System, Station #78 (Pomona), wwwcimis.water.ca.gov. 2 Western Regional Climate Center, Pomona Fairplex (047050), Monthly Climate Summary, Period of Record : 11/1/1893 to 1/20/2015, accessed May 17, Table 2-1 lists the average annual Evapotranspiration (ET o ) 5, temperatures, and rainfall for the District s service area. Average high temperatures range from 65 degrees Fahrenheit in January to 91 degrees Fahrenheit in July and August. Average annual precipitation is approximately 17 inches, with most precipitation typically occurring between November and April. There is usually little or no summer rainfall and often the predominant periods of rain do not occur until January. ETo averages 49 inches annually Population The high cost of land in Los Angeles area increased the attraction of the Chino Basin and other suburban areas where land was still plentiful during the urban sprawl era. Following the economic downturn in the late 2000s, development is starting to return to the region, but there are differing opinions on how rapidly the area will grow in population during the coming decades. 5 ET is the loss of water to the atmosphere by the combined processes of evaporation (from soil and plant surfaces) and transpiration (from plant tissues). It is an indicator of how much water crops, lawns, gardens, and trees need for healthy growth and productivity. ET from a standardized grass is commonly denoted at ET o. May Public Review Draft

20 Current and projected population estimates for the District s retail service area are provided in Table 2-2. The 2015 population estimate was developed following the procedure described in Methodology 2 of DWR s Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (see Section 3.6) and through use of the DWR Population Tool (see Appendix F for verification of data). 6 In order to project the District s service area population for the next 25 years, it is necessary to divide the service area by municipal boundaries and use population estimates and growth projections for each subarea, as described in the footnotes to Table 2-2. As shown in the table, the District s retail service area population over the next 25 years is projected to grow by approximately 18 percent (from 54,198 to 64,018). The largest demographic shift in the foreseeable future for the District retail service area will be a continued increase in multi-family housing units in proportion to single-family housing units. This shift will largely be due to the development of high density residential properties within the North Montclair Downtown Specific Plan area of the City of Montclair. The maximum number of dwelling units projected for the Specific Plan area at build-out is 2, The current population of the District s wholesale customer, the City of Chino Hills, is 77,596. The city projects its population will grow to 94,895, or 22 percent, in 20 years (a 2040 population projection was not provided). For more information on the city s population projections, see Chino Hills s 2015 UWMP. Table 2-2: Service Area Population Current and Projected Area City of Montclair 1 38,332 39,700 41,100 42,500 43,900 45,346 City of Chino 2 4,235 4,955 4,955 4,955 4,955 4,955 Unincorporated 3 11,631 12,827 13,053 13,276 13,494 13,717 Total Retail 4 54,198 57,482 59,108 60,731 62,349 64,018 City of Chino Hills 5 77,596 89,314 91,137 92,997 94, Total Wholesale 77,596 89,314 91,137 92,997 94, Total Retail/Wholesale 131, , , , , Aligns with data in DWR Standardized Tables 3-1 R and 3-1 W estimate: State of California, Department of Finance, E-1: City/County Population Estimates with Annual Percent Change January 1, 2015 and Sacramento, California, April estimates: Southern California Association of Governments, Population, Household, and Employment Integrated Growth Forecast, City of Chino, May 18, estimate: Difference between 2015 total population and cities of Montclair and Chino population estimates estimates based on melded Montclair and Chino service area growth rates total based on same calculation used to derive SBX 7-7 baseline population (see Section 3.6.1) totals are sum of above data. 5 City of Chino Hills, May 12, City of Montclair, May 16, Public Review Draft 2-5 May 2016

21 Section 2 Monte Vista Water District In total, the District s retail and wholesale population is projected to grow by just over 19 percent (from 131,794 to 157,244) by Land Use The area within the District retail service boundary was once mainly used for agricultural purposes, namely citrus orchard farming. Over the course of time, this land has gone through a series of developments, ultimately resulting in the variety of land use types as seen today. The primary land use of this area is now residential, although there is still a large commercial sector as well as some light industrial/manufacturing and agricultural areas. The majority of land within the District's retail service area has already been built out, but there is significant potential for future in-fill developments. Figure 2-2 and Figure 2-3 show existing and future land uses in the retail service area (see Section 3.2). 2.3 DISTRICT WATER DISTRIBUTION SYSTEM The District's water distribution system is comprised of groundwater wells, reservoirs, transmission and distribution pipelines, pump stations, pressure reducing stations, and a hydrogenation station. The system is used to meet the water demands of the District s retail and wholesale customers. The District s retail water distribution system serves four separate pressure zones and includes approximately 198 miles of water distribution mains ranging in size from four to 42 inches in diameter, six reservoirs with a combined capacity of 12 million gallons, and seven active pump booster stations used to boost water throughout the system. The District currently has 12 active groundwater wells with a combined production capacity of approximately 28 mgd. Table 2-3 lists the District s wells and capacities. The District s 2008 Water Master Plan calls for significant pipeline replacements in the next 30 years, as a large portion of its pipelines were constructed around the 1950s and are approaching the end of service life. The Master Plan also calls for the construction or rehabilitation of additional storage facilities to meet needed capacity at build-out. The District s Water Master Plan includes recommendations for four new or renovated wells to provide for system reliability and continued groundwater pumping. As these wells are primarily to replace capacity of existing older wells which will soon go out of service, no additional capacity is expected within the master planning horizon. The District currently has six emergency interconnections with neighboring water agencies: Golden State Water Company (formerly Southern California Water Company) and the cities of Chino (x3), Upland, and Chino Hills. Over the last two decades, only the interconnection with Golden State Water has ever been activated, at which time the District delivered water to Golden State Water. The District has also discussed installing interconnections with the cities of Pomona and Ontario. Water is transported from the District to Chino Hills via transmission mains and ultimately delivered through two turnout facilities. May Public Review Draft

22 Section 2 Figure 2-2: Existing Land Uses Retail Service Area IEUA/Arcadis, Land Use Based Demand Model Technical Memorandum, 2016 (Appendix G) Public Review Draft 2-7 May 2016

23 Section 2 Monte Vista Water District Figure 2-3: Future Land Uses Retail Service Area IEUA/Arcadis, Land Use Based Demand Model Technical Memorandum, 2016 (Appendix G) May Public Review Draft

24 Section 2 Table 2-3: Active Groundwater Wells and Total Production Capacity (mgd) Well Number Capacity (mgd) Total Full Well 33 capacity 2.9 mgd; the City of Chino owns half of the well s capacity. Public Review Draft 2-9 May 2016

25 Section 3 SECTION 3 WATER SYSTEM DEMANDS 3.1 RECENT WATER DEMAND TRENDS Over the past ten years, Monte Vista Water District s retail customers have achieved a significant and sustained reduction in demands. As of the writing of this report (May 2016), retail customer demands are 36 percent less than in 2007 (see Figure 3-1). Figure 3-1: District Retail Customer Demand The District has consistently and actively promoted water use efficiency and provided educational and financial resources to assist customers in wise and efficient water use. In 2010 the District adopted mandatory year-round water use efficiency best practices, as well as the region s first budget-based tiered rate structure for single-family residential customers (80 percent of total metered accounts) which incentivizes efficient use. See Sections 6 and 7 below for more information on these programs and activities. In January 2014, Governor Brown proclaimed a State of Emergency in recognition of record-setting drought conditions across California and the western United States. On April 1, 2015, he issued an executive order requiring a mandatory 25 percent reduction in urban water use across the State an unprecedented action in California history. In May 2015, the District s Board of Directors declared a Significant Water Supply Shortage in response to Governor Brown s order. Public Review Draft 3-1 May 2016

26 Section 3 Monte Vista Water District Consistent with the Water Conservation Act of 2009, the District is required to reduce water use on a gallons per person per day basis by 20 percent compared to a ten-year baseline average (see Section 3.6 below) a goal that District customers have already accomplished! While the District expects overall water demands to slowly increase as drought conditions improve and the current emergency order is lifted, the District will work with its customers to maintain and enhance their water use efficiency in order to comply with the State s requirements and District policy goals. 3.2 RETAIL DEMAND PROJECTIONS LAND USE BASED MODEL In 2015, as part of its regional integrated resource planning effort, Inland Empire Utilities Agency (IEUA) developed a Land Use Based Water Demand Model for projecting water demands through 2040 for each of its retail water agencies, including the District. This model updates the demand projections used in the District's 2008 Water Master Plan to plan and size future District facilities. For a description of the methodology used by the model to project the District s future retail water demands, including the extent to which passive savings are considered, please see Appendix G. For existing and future land uses, see Figure 2-2 and Figure PAST, CURRENT, AND PROJECTED WATER DEMANDS Table 3-2 provides the District s existing and projected demands on its water system by customer and water use sector. The projected retail demands are based on Land Use Model projections Section 3.2 and consistent with the demand reduction requirements and urban water use targets described in Section 3.6. Although historical wholesale demand by the City of Chino Hills has been between 8,000 and 14,000 AFY, the District will use its full contractual obligation of mgd, or 22,650 AFY, in estimating future potential demands by Chino Hills on the District s water system. 3.4 SYSTEM WATER LOSS Beginning in 2015, water suppliers are required to quantify their distribution system losses for the most recent 12-month period using the American Water Works Association s (AWWA) water system balance methodology. The District has tracked water system loss using AWWA s methodology since Table 3-1 provides water loss data for Fiscal Year Ending (FYE) The District s FYE 2015 water system audit using AWWA s Free Water Audit Software (v5.0) is included in Appendix H. Table 3-1: District Water Loss 2015 (AFY) Reporting Period Volume of Water Loss 1 FYE Aligns with DWR Standardized Tables 4-4 R and 4-4 W. 1 Includes both apparent and real losses (Appendix H). May Public Review Draft

27 Section 3 Sector Table 3-2: Current and Projected Water Demand by Sector (AFY) Actual 1 Projected 2025 Projected 2030 Projected 2035 Projected 2040 Projected Single-family Residential 2 4,521 5,079 5,187 5,447 5,574 5,739 Multi-family Residential 2 1,380 2,116 2,209 2,236 2,270 2,334 Commercial 2 1,543 1,414 1,425 1,437 1,490 1,517 Institutional/governmental Industrial Landscape ,067 1,080 1,093 1,129 1,143 Agriculture Hydrant and Fire Service Unbilled Metered Uses Unbilled Unmetered Uses Water Loss Groundwater Recharge (ASR) Total Retail Potable Demand 9,110 11,519 11,756 12,060 12,361 12,645 Wholesale Potable Demand 7 6,933 22,650 22,650 22,650 22,650 22,650 Total Potable Demand 16,043 34,169 34,406 34,710 35,011 35,295 Recycled Water (Direct Sales) Recycled Water (Recharge) Total Non-Potable Demand 791 1, ,019 1,069 1,069 Total Water Demand 16,834 35,200 35,396 35,730 36,081 36,364 Aligns with data in DWR Standardized Tables 4-1 R, 4-1 W, 4-2 R, and 4-2 W demands obtained from District billing, production, distribution, and water loss audit data for fiscal years (July-June) ending in above year. 2 Residential, commercial, institutional/governmental, industrial, landscape, and agricultural water demand calculated using the Land Use Based Demand Model, 2015 (Appendix G). Water loss and unbilled metered and unmetered uses subtracted out of total demand factor per customer use category. Single-family residential demands include very low, low, and medium (40 percent) model projected residential demands; multifamily residential demands include medium (60 percent) and high density model projected residential demands. Projected landscape demands include all park and school yard landscape demands, some of which are metered as institutional/governmental. 3 Includes hydrant meters used during construction and detector check (DC) fire accounts. 4 Unbilled metered uses include hydrant flushing, fire flow tests, District facility landscape irrigation, and groundwater well pump to waste. Unbilled unmetered uses include groundwater well water quality analyzers, facility washdown, street sweeping, and local firefighting. All approved but unbilled uses are tracked and reported in the annual water system audit (Section 3.4). Usage can be highly variable year to year. Projections based on average use over the past five years. 5 Includes both real losses (leaks) and apparent losses (customer meter inaccuracies, billing errors, and theft) as reported in the annual water system audit (Section 3.4). Projections based on average loss over the past five years. 6 The District estimates that available and affordable imported water will be available in one out of five future years for treatment and injection into the Chino Groundwater Basin through the District s Aquifer Storage and Recovery (ASR) wells. During such years, the District estimates it will be able to inject 2,000 AF. As a result, 400 AF is projected as an average annual availability of injection water for conjunctive use (see Section 4.6.2) wholesale demand equals full contractual obligation to the City of Chino Hills. 8 Recycled water direct sales are deliveries to the District s recycled water customers through its retail recycled water distribution system. Recycled water groundwater recharge is the District s purchased City of Montclair share of regional recycled water recharge in the Chino Groundwater Basin (see Section 4.6.5). Public Review Draft 3-3 May 2016

28 Section 3 Monte Vista Water District 3.5 LOWER INCOME HOUSING DEMANDS SB 1087 requires water providers to grant priority service hook-ups to lower income housing developments. The UWMP Act requires documentation of future water demands associated with planned new lower income housing by the local land use planning jurisdiction. A lower income household has an income below 80 percent of area median income, adjusted for family size. The City of Montclair s updated Housing Element of the General Plan (adopted February 2014) indicates a quantitative directive for the construction of 278 new low and very low income housing units within the City by The District is unaware of any lower income housing developments planned for the City of Chino or County of San Bernardino areas of the District service area. Water demands for planned low income housing by 2021 were based on the average multi-family unit factor from the updated demand projections. New demands associated with planned low income housing are approximately 122 AF by The District confirms that this demand is included in the projected water demands represented in Table DEMAND REDUCTION REQUIREMENTS The Water Conservation Act of 2009 requires all California urban water agencies to set and meet certain demand reduction targets in order to assist the State in reducing urban water use by 20 percent by This collective goal is commonly known as 20 percent by 2020 or 20x2020. The prescribed way to determine the District s compliance is by measuring the per person (or per capita ) daily water usage by District customers. The Act requires DWR to develop, in consultation with an Urban Stakeholder Committee (USC) comprised of water agency representatives and water use experts, specific methodologies for determining per capita water use and other information required to meet 20x2020 water use reduction requirements. DWR published its Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (Methodologies) in October 2010 and published an updated version of the Methodologies in February The District is required to follow the Methodologies when estimating past, current, and projected water system demands in its UWMP in order to establish water use reduction targets for 20x2020 compliance. Additionally, the 2016 Methodologies require the District to update its water use reduction targets using the most recent 2010 U.S. Census data. This section of the plan outlines the District s process in estimating its system demands and establishing its 20x2020 water use reduction targets. The District s Board of Directors will formally adopt its 2020 water use target as part of its resolution adopting the 2015 UWMP (see Appendix E). May Public Review Draft

29 Section Baseline Gallons Per Capita Per Day The first step toward achieving 20x2020 compliance is to determine the District s Base Daily Per Capita Water Use which is used to form a baseline for the agency s 20 percent reduction in water use target for The Methodologies require water agencies to identify a continuous 10-year period ending no earlier than 2004 and no later than 2010, and then calculate the gallons per capita per day (GPCD) demands of their customers for each of these years. 8 The average GPCD over this 10-year period forms the agency s Base Daily Per Capita Water Use, or Baseline GPCD. Following the 2016 Methodologies and using the DWR Population Tool ( the District has recalculated its service area population for the years using updated 2010 U.S. Census data, 9 and then divided its population by the total gross potable water supply entering its potable water distribution system. As shown in Table 3-3, the final calculation of the District s Baseline GPCD, using the 10-year GPCD average of the years , is 209 GPCD. The following sections describe how the District determined its population and gross potable water supply for these historical periods. Table 3-3: Baseline Gallons Per Capita Per Day Calculation 10-Year Range Calendar Year Service Area Population Annual Gross Water Use (AFY) Daily Per Capita Water Use (GPCD) ,020 10, ,778 11, ,508 10, ,048 10, ,996 11, ,459 11, ,648 11, ,189 11, ,784 12, ,960 10, Baseline Gallons Per Capita Per Day (10-Year Average): 209 Aligns with data in DWR Standardized SBX 7-7 Tables 4 and 5. 8 Water agencies which met at least 10 percent of their total 2008 demand through recycled water could expand their baseline window to 15 years; the District had just started deliveries of recycled water in Data from the 2010 U.S. Census was not yet available when the District initially calculated its Baseline GPCD in its 2010 UWMP. Public Review Draft 3-5 May 2016

30 Section 3 Monte Vista Water District Population DWR s Methodologies provide a specific method for urban water agencies to estimate their past and present service area populations, depending on available information. The District s service area is not contiguous with one municipal incorporated area, and so it is not able to rely solely on California Department of Finance population estimates for individual incorporated cities. Neither does a regional or wholesale agency provide the District with annual population estimates for its service area. The District, therefore, is required to follow the methods outlined in Methodology 2 of the Methodologies, using the DWR Population Tool which matches data from the most recent U.S. Census with the District s active accounts for each year, to come up with annual population estimates. For documentation associated with the Population Tool, see Appendix F. Gross Potable Water Use Gross potable water use is defined by DWR s Methodologies as the total amount of water entering the District s potable water system, minus water exports to other agencies, water placed into long-term storage (e.g., water injected into the groundwater basin), and indirect reuse of recycled water through groundwater recharge. The District directly meters and accounts for water entering into its potable water distribution system. Water production and deliveries to the District s wholesale agency customer, the City of Chino Hills, is separately metered. Since 2002, the District has purchased the City of Montclair s portion of the regional recycled water recharge into the Chino Groundwater Basin (see Section 4.5); the annual amount of indirect recycled water reuse is calculated using the process outlined in DWR s Methodologies and subtracted from its retail potable water supply, resulting in a calculated gross potable water supply. For documentation associated with indirect recycled water reuse calculation, see Appendix I Target Gallons Per Capita Per Day Having established its Baseline GPCD, the District is required by DWR s Methodologies to determine its Urban Water Use Target GPCD for 2020 and its Interim Urban Water Use Target for The Water Conservation Act of 2009 provides water agencies with four methods for setting its urban water use targets: Method 1: Reduce total demand on the water system by 20 percent, measured by comparing baseline gallons per capita per day (GPCD) historical usage to GPCD usage in Method 2: Meet system-wide water use performance standards for indoor residential water use, landscaped area water use, and other uses. Method 3: Meet 95 percent of the water agency s hydrologic regional target, as determined by the State s 20x2020 Water Conservation Plan. May Public Review Draft

31 Section 3 Method 4: An additional compliance option, developed by DWR in consultation with the USC, based on water use sector performance standards and past conservation activity. The District has evaluated each method and reconfirms that Method 1 is the most feasible for the District to use in setting its urban water use targets. Following Method 1, the District s Target GPCD for 2020 must be 80 percent of its Baseline GPCD, or 167 GPCD. The District s Interim Target GPCD for 2015 is calculated by adding the Baseline GPCD and the Target GPCD together, and dividing by two; the result is an Interim Target GPCD of 188 GPCD (see Table 3-4). Table 3-4: District Urban Water Use Targets 2020 Urban 2015 Interim Urban Baseline GPCD Water Use Target 1 Water Use Target Aligns with data in DWR Standardized Table 5-1 and SBX 7-7 Tables 7-A, 7-F, and % of Baseline GPCD. 2 (Baseline GPCD Urban Water Use Target) / 2 Confirm Urban Water Use Targets The District s final step in setting its urban water use targets is to confirm that its target meets the minimum threshold set by the Water Conservation Act of 2009 of a five percent reduction from the average GPCD of a five-year contiguous base period between As demonstrated in Table 3-5, a five percent reduction from the baseline average GPCD for the years provides a maximum target of 192 GPCD. The District s urban water use target of 167 GPCD is well below this maximum target. Table 3-5: Baseline Gallons Per Capita Per Day Calculation 5-Year Range Calendar Year Service Area Population Annual Gross Water Use (AFY) Daily Per Capita Water Use (GPCD) ,189 11, ,784 12, ,960 10, ,578 11, ,416 11, Baseline Gallons Per Capita Per Day (5-Year Average): % of Baseline Gallons Per Capita Per Day: 192 Aligns with data in DWR Standardized SBX 7-7 Tables 5 and 7-F. Public Review Draft 3-7 May 2016

32 Section 3 Monte Vista Water District Compliance with 2015 Interim Urban Water Use Target The District is required to report in its 2015 UWMP whether it has achieved its 2015 Interim Urban Water Use Target as required by SBX7-7. As shown in Table 3-6, District customers used 141 GPCD in 2015, which is 33 percent below the Baseline GPCD of 2009, far exceeding the 10 percent reduction requirement. Table 3-6: Compliance with 2015 Interim Urban Water Use Target Annual Gross Service Area Water Use Population (AFY) ,198 8, Calendar Year Daily Per Capita Water Use (GPCD) Interim Urban Water Use Target 188 Did the District Achieve Targeted Reduction for 2015? Aligns with data in DWR Standardized Table 5-2 and SBX 7-7 Table Wholesale Agency Assistance in Meeting Urban Water Use Target The City of Chino Hills s Base Daily Per Capita Water Use (average of ) is 217 GPCD, resulting in a 2020 Urban Water Use Target of 173 GPCD and a 2015 Interim Urban Water Use Target of 195 GPCD. Chino Hills s actual 2015 GPCD was 164 GPCD, which is 24 percent below its Baseline GPCD and well below its 10 percent reduction requirement. 10 Chino Hills, at this time, has not requested and does not appear to need assistance from the District in achieving its 20x2020 reduction requirements. The District has in the past, and at the request of the city, provided general assistance in meeting California Urban Water Conservation Council Best Management Practices reporting requirements (see Section 6.1.1). The District and Chino Hills also collaborate in various regional conservation programs (Section 6.3.1) and through the Regional Alliance (Section 1.2.3). Yes 10 City of Chino Hills, May 12, May Public Review Draft

33 Section 4 SECTION 4 WATER SYSTEM SUPPLIES 4.1 WATER SUPPLY OVERVIEW Over the past 15 years, Monte Vista Water District has invested over $50 million in its infrastructure and has increased its water supply capacity to over 50 million gallons per day. Key investments in local groundwater, surface water, and recycled water have focused on building a diverse, drought-resilient water supply portfolio and reducing reliance on imported water. For a full list of investments, see Table 4-2 below. The District currently receives its water supply from four sources: Groundwater produced from the Chino Groundwater Basin, an adjudicated basin managed through the Chino Basin Watermaster process; Imported State Water Project surface water from northern California received from the Metropolitan Water District of Southern California through the Inland Empire Utilities Agency and the Water Facilities Authority; Entitlement water deliveries from the San Antonio Water Company, including groundwater produced from local adjudicated groundwater basins and surface water produced from the San Antonio Creek Watershed; and, Recycled water from Inland Empire Utilities Agency. Table 4-1: Water Supplies Current and Projected (AFY) Water Supply Sources Actual 1 Projected 2025 Projected 2030 Projected 2035 Projected 2040 Projected Chino Groundwater Basin 2 8,406 28,183 28,183 28,183 28,183 28,183 Water Facilities Authority 3 7,025 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company Inland Empire Utilities Agency Recycled Water , ,019 1,069 1,069 Total Water Supply 16,833 51,790 51,749 51,778 51,828 51,828 Aligns with data in DWR Standardized Tables 6-8 R, 6-8 W, 6-9 R, and 6-9 W. 1 Actual production and purchases for Fiscal Year Ending 2015 (July 2014 June 2015). 2 District groundwater well production capacity minus 15% to account for potential well shutdowns for maintenance or testing. 3 The District may use up to its full share (24%) of WFA treatment plant capacity (81 mgd) at any time, subject to Tier 2 and penalty rates. 4 Annual non-shortage entitlement through District ownership of outstanding SAWCo shares. 5 Includes recycled water purchased for direct reuse and groundwater recharge (Table 4-7). Public Review Draft 4-1 May 2016

34 Section 4 Monte Vista Water District The District s current and projected available water supplies are listed in Table 4-1. All supplies are available for use to meet both retail and wholesale water demands. Table 4-2: Investments in Local Water Supply Facilities Completed Investment Supply Agua de Lejos Water Treatment Plant Monte Vista Irrigation Company 1988 (2016 debt) $25 million (MVWD share) 1999 $4.4 million 19.4 mgd (MVWD share) 1,000 AFY (6,700 AF stored) Well $1.1 million 2,000 gpm Well $1.7 million 500-2,000 gpm Well $1.9 million 2,100 gpm Well 30 (ASR) 2007 $3.6 million Well 32 (ASR) 2008 $3.1 million Well 4 (ASR retrofit) 2008 $0.5 million 2,000 gpm (1,000 gpm injection) 2,000 gpm (1,000 gpm injection) 800 gpm (400 gpm injection) Well $4 million 2,000 gpm Well 33 (ASR, ion exchange) 2009 $3.5 million (MVWD share) 2,000 gpm (1,000 gpm injection) Well $4.6 million 2,100 gpm Recycled Water System San Antonio Water Company Shares (300) 2009 $1.1 million (MVWD share) 400 AFY 2009 $9 million 800 AFY Totals $63.5 million 50.8 mgd 1 1 Based on current total capacity of acquired resources. May Public Review Draft

35 Section CHINO GROUNDWATER BASIN Basin Overview The District s primary source of water supply is the Chino Groundwater Basin (Chino Basin). This basin is located in the Santa Ana River Watershed under a surface area of approximately 220 square miles. The Chino Basin underlies a relatively flat alluvial valley from east to west which slopes from north to south at a one to two percent grade. Valley elevations range from about 2,000 feet in the foothills below the San Gabriel Mountain to about 500 feet near Prado Dam. The principal surface drainage for the Chino Basin is the Santa Ana River. Year-round flow occurs along the entire reach of the Santa Ana River due to surface inflows at Riverside Narrows, discharges from municipal water recycling plants to the Santa Ana River, and rising groundwater. Multiple concrete-lined channels, including the San Antonio, Chino, Cucamonga, Day, and San Sevaine creeks, collect and drain snowmelt, stormwater, and urban runoff from the foothills and valley area and flow directly into the river or mix with rising groundwater in the wetlands above Prado Dam. Recharge basins have been constructed and are maintained along these channels to capture and recharge native flows, as well as imported water and recycled water, back into the groundwater. While still considered to be a single groundwater basin, the Chino Basin is hydraulically divided into five distinct underground drainage areas, or Management Zones (MZs), based upon similar hydrologic conditions, and three sub-basins as defined in the Optimum Basin Management Program, June 2000, and the 1995 Water Quality Control Plan for the Santa Ana Watershed (Region 8). The Chino Basin has a total underground water storage capacity of approximately 6 million acre-feet (MAF) and currently holds approximately 5 MAF of groundwater. The Chino Basin Judgment, adopted by the California Superior Court in 1978 under stipulation by local groundwater producers, designated a safe yield for the basin of 140,000 AF, which is the amount of groundwater that can be pumped from the basin each year without causing undesirable results. Purchasing imported water from MWD through IEUA for basin recharge generally makes up any excess of pumping over the safe yield, although supplemental water may be obtained from any available source including recycled water and imported water. The Judgment also allows for the transfer and storage of excess rights and supplemental supplies (see Section 4.2.2). The Chino Basin Judgment provides the California Superior Court with continuing jurisdiction over management of the Chino Basin for the benefit of the producing parties and the public. The Judgment creates the Chino Basin Watermaster to serve as an arm of the Court in overseeing implementation of the Judgment, as well as subsequent management agreements, to ensure that the groundwater basin is properly managed. The Judgment and management agreements establish groundwater production rights and a physical solution which provides for replenishment of any production over and above a producing party s share of safe yield. Public Review Draft 4-3 May 2016

36 Section 4 Monte Vista Water District Figure 4-1: Chino Groundwater Basin Boundaries and Water Features Courtesy of Chino Basin Watermaster, 2016 May Public Review Draft

37 Section 4 Figure 4-2: Chino Groundwater Basins with Management Zones Public Review Draft 4-5 May 2016

38 Section 4 Monte Vista Water District The District currently has base water rights, or an assigned share of the safe yield, of 4,824 AFY. The District also receives annual water rights from reallocations of unpumped agricultural rights, annual transfers from other parties, and recharged recycled water credit. Additionally, the District owns the Monte Vista Irrigation Company, which has 677 AFY of base rights and receives its share of unpumped agricultural rights. In October 2015, Watermaster submitted to the Court the 2015 Safe Yield Reset Agreement which resets safe yield from 140,000 AFY to 135,000 AFY and administers the resulting reallocation of rights based on existing agreements (see below). If the Court approves the agreement, the District s annual allocation of production rights will decline, but the District s access to basin groundwater will remain unchanged Chino Basin Watermaster Governance and Agreements Chino Basin Watermaster (Watermaster) was created pursuant to the terms of Court Judgment entered in Superior Court of California, County of San Bernardino Case No. RCV (formerly Case No. SCV ) entitled Chino Basin Municipal Water District v. City of Chino, et al. (Appendix J). The Judgment establishes safe yield and annual production rights for the Chino Basin, and provides a forum for basin stakeholders to work cooperatively in managing the basin to meet regional water supply needs. The Judgment, which was entered on January 27, 1978, established three groundwater pool committees: (1) the Overlying Agricultural Pool, which includes the State of California, non-producing water districts, and all producers of water for uses other than industrial or commercial purposes; (2) the Overlying Non-Agricultural Pool, which represents producers of water for industrial or commercial purposes; and (3) the Appropriative Pool, which represents cities, districts and other public or private utilities and water purveyors. Representatives from the pool committees constitute an Advisory Committee that sets basin management policies and advises Watermaster s nine-member Board, which is comprised of designated representatives from the three pools and nonproducing municipal water districts. The Watermaster Board, in turn, advises and serves as an arm of the Court in its continuing jurisdiction over the basin under the Judgment. The Judgment was amended in 2000 through the signing of the Peace Agreement which, among other things, established procedures to implement an Optimum Basin Management Program (OBMP) to preserve and enhance basin yield and water quality, and again in 2007 through the signing of the Peace II Agreement which, among other things, provided for the construction of desalters to treat groundwater degraded by past agricultural practices. These agreements and subsequent court orders also establish a process, consistent with the Judgment, for unproduced Agricultural Pool rights to be transferred to the Appropriative Pool. Finally, these agreements foster a market for the lease or sale of pumping rights within the basin. Annual water exchanges occur regularly among agencies within the Appropriative Pool and between the Non-Agricultural Pool and the Appropriative Pool. May Public Review Draft

39 Section 4 Basin Yield and Allocation of Rights The Judgment defines Safe Yield as the amount of water that can be safely extracted from the basin on an annual basis and sets it at 140,000 AFY. 11 Safe Yield is allocated first to the Agricultural Pool and the Non-Agricultural Pool in fixed quantities of 82,800 AFY and 7,366 AFY, respectively, to satisfy their prioritized overlying (or riparian) water rights as recognized under the Judgment. Once the overlying pools are satisfied, the remainder of Safe Yield is allocated to Appropriative Pool parties based on established percentages. While the allocations to the overlying pools are fixed, the allocation to the Appropriative Pool may increase or decrease depending on changes to Safe Yield or the development of additional yields. The Judgment defines all basin yield allocated to the Appropriative Pool as Operating Safe Yield (OSY). OSY includes the Appropriative Pool s share of Safe Yield, any overdraft of the basin that has been approved by the Court, and any additional yield to the basin not included in Safe Yield. To date, the Court has approved two quantities of basin overdraft: 1. An overdraft of 200,000 AF, allocated to OSY at 5,000 AFY over the first 30 years of the Judgment ( ); and, 2. An overdraft of 400,000 AF to facilitate a basin management program known as Basin Re-operation, allocated annually by agreement not to the OSY but instead to offset the replenishment obligation of the Chino Desalter Authority production wells. Yield that has been developed but not incorporated into Safe Yield is defined by the Peace Agreement as New Yield and is included in OSY by agreement (except for New Yield generated by desalter wells see below). To date, and again by agreement, annual quantities of New Yield generated by newly constructed stormwater capture facilities were allocated to Appropriative Pool parties between 2004 and Additionally, the Judgment unique among California groundwater basin adjudications envisioned a long-term transition in the Chino Basin from agricultural to urban land uses, and incorporated a mechanism for unproduced Agricultural Pool rights to transfer to the Appropriative Pool as the land was developed. The Judgment establishes a priority for distribution of these rights: first to offset the impact of a decline in Safe Yield, then to satisfy land conversion claims, then to all Appropriative Pool parties. Through a series of agreements and court orders, a process was developed to implement this transfer by way of two equal priority methods: an early transfer of 32,800 AFY to the entire Appropriative Pool, and a 2 AF per acre transfer to individual Appropriative Pool parties with agricultural land use conversion claims. If the total transfer plus Agricultural Pool production exceeds the Agricultural Pool s share of Safe Yield, each Appropriative Pool party s share of the total transfer is reduced proportionately. The Court also approved a similar reduction of the total transfer when Safe Yield declines. 11 This summarizes the legal definition that can be found in the Chino Basin Judgment, 4(x) (Appendix J). Public Review Draft 4-7 May 2016

40 Section 4 Monte Vista Water District As stated above, Watermaster has submitted to the Court the 2015 Safe Yield Reset Agreement. If adopted by the Court, the terms of the agreement will go into effect beginning with the production year (July 1, 2014 through June 30, 2015). According to the terms of the agreement, Safe Yield is reduced from 140,000 AFY to 135,000 AFY, inclusive of all New Yield up to this time. Additionally, the agreement finds that up to 20,000 AFY of New Yield generated by the Chino Desalter Authority groundwater wells is enjoined by agreement from being considered part of Safe Yield, thus effectively reducing Safe Yield by an additional 20,000 AFY. This combined 25,000 AFY reduction of Safe Yield must be offset by unproduced Agricultural Pool rights, thus effectively reducing the amount of rights available for reallocation through early transfer and land use conversion claims. Finally, the Judgment allows Appropriative Pool parties to carry over unproduced production rights equal to their annual share of OSY to the following year. Any quantity carried over in excess of OSY must be placed in a local storage account (see below). A key element of the Judgment s physical solution is the provision of replenishment water for production of groundwater in excess of production rights. Watermaster or individual parties may use imported water, recycled water, stored water, and water transfers from other parties as replenishment water to offset overproduction. As long as the producing party does not cause physical injury to another producer or to the basin, they may produce groundwater in excess of their production rights. District Groundwater Production Rights The District s total annual Chino Basin production rights vary based on Watermaster s allocation of unused Agricultural Pool rights, District annual purchases from other producers, and other factors. Over the last decade, the District has transitioned from being an overproducer to an underproducer of its available groundwater production rights, resulting in carryover for production in subsequent years and the building up of stored groundwater (see below). Additionally, the District owns and may use some or all of Monte Vista Irrigation Company s (Company) annual production rights, receives production rights credit for a portion of IEUA s regional recycled water recharge (see Section 4.5.2), may receive transfers from SAWCo as part of its entitlement (see Section 4.4), and may purchase additional production rights from other parties. If the District produces in excess of its production rights in any given year, it may transfer stored water, purchase water from another party, or pay Watermaster a replenishment assessment fee. In Fiscal Year Ending (FYE) 2015 (July 2014 through June 2015), the District s total rights to produce groundwater from the Chino Basin, including Company production rights, recycled water recharge credits, and transfers from SAWCO and the Agricultural and Non-Agricultural Pools, were equal to approximately 14,217 AF. This estimate assumes that the 2015 Safe Yield Agreement is approved by the Court The District s fiscal year aligns with Watermaster s production year. Watermaster prepares an Assessment Package each November to determine the assessments for each groundwater producer from the prior fiscal year. May Public Review Draft

41 Section 4 The following are the criteria used for this estimate: OSY, comprised of the Appropriative Pool share of the reset Safe Yield, excluding New Yield generated by the Chino Desalter Authority groundwater wells, and including approved overdraft, is 29,834 AFY (135,000 82,800 7,366 20, ,000 = 29,834). However, as described above, the first priority of use for unproduced Agricultural Pool rights is to offset the impact of a decline in Safe Yield. Therefore, OSY is made whole and increased by 25,000 AFY to 54,834 AFY. The District s share of OSY is percent, or 4,824 AFY, and the Company s share of OSY is percent, or 677 AFY. According to Watermaster records, the Agricultural Pool produced 28,521 AF in FYE 2015, resulting in unproduced rights of 54,279 AF available for reallocation (82,800 28,521 = 54,279). The first 25,000 AF is reallocated to offset the decline in Safe Yield, resulting in 29,279 AF remaining to be reallocated through early transfer and land use conversion claims. Using land use conversion claims from the prior year and resulting reallocation adjustments (see Table 4-3), the District estimates that the District and Company will receive 1,460 AF and 201 AF in reallocated Agricultural Pool rights, respectively. In FYE 2015, the District and Company participated in the transfer of Non- Agricultural Pool rights under the Peace II Agreement s Exhibit G provisions, and purchased 452 AF and 35 AF, respectively. Additionally, SAWCo transferred 387 AF of entitlement deliveries to the District, and the District received a 213 AF transfer from the Non-Agricultural Pool under the Peace II Agreement, Section 9.2 provisions. In FYE 2015, the District was allocated 468 AF of supplemental water credit as its share of the regional recycled water recharge program. Table 4-3 shows how the total FYE 2015 production right is calculated, and then compares it to the total amount produced by the District. As shown, the District underproduced its annual rights by 6,197 AF. Of this amount, 5,284 AF will be carried over into next year s production right and 913 AF will be placed in the Company s excess carryover local storage account (see below). While the District is currently an under-producer from the Basin, the District has in the past and may in the future overproduce if it is deemed necessary and appropriate to do so. The only consequence to the District when pumping above its basin production water right in any given year is to purchase additional replenishment water for the benefit of the basin, as governed by the Judgment and managed by Watermaster. The most recently completed Assessment Package titled FY 2014/15 is for FY 2013/14 production rights. Due to ongoing litigation associated with the 2015 Safe Yield Reset Agreement, Watermaster was unable to complete a FY 2015/16 Assessment Package for FY 2014/15 production rights; however, Watermaster did publish information associated with FY 2014/15 production rights as part of an interim assessment process. Public Review Draft 4-9 May 2016

42 Section 4 Monte Vista Water District Table 4-3: Chino Groundwater Basin Total Annual Production Right, Actual Production and Underproduction FYE 2015 (AFY) FYE 2015 Monte Vista Water District Monte Vista Irrigation Company Early Transfer 2, Land Use Conversion Reallocation Adjustment 1 <1,480> <204> Total Ag Pool Safe Yield Reallocation 1, Assigned Share of Safe Yield 4, Carryover from FYE 2014 Underproduction 4, Transfers Total FYE 2015 Production Right 12,628 1,590 Total Assessable FYE 2015 Production 3 <7,553> 0 Net Under-production 4,607 1,590 1 Subject to change annually. 2 For the District, includes 452 AF purchased from the Non-Agricultural Pool under Peace II, 387 AF of assigned water rights in lieu of direct deliveries from SAWCo, and 213 AF transferred from the Non-Agricultural Pool under Peace II. For the Company, includes 35 AF purchased from the Non-Agricultural Pool under Peace II. 3 In FYE 2015, the District produced 853 AF of the City of Chino Hills s production rights. While this amount is included in the District s total groundwater production volume in Table 4-4, it is not included in this table which quantifies production rights. Table 4-4 provides the amount of groundwater pumped for the last five years. Future groundwater production will be determined based on retail and wholesale demand, as well as replenishment water and imported water supply availability and cost. It is assumed that the District will lease additional groundwater rights or pay Watermaster replenishment rates when its adjudicated supply is exceeded. Table 4-4: Groundwater Volume Pumped (AFY) Well Production Retail 9,301 6,944 6,897 7,163 5,943 Wholesale 2,732 3,594 3,428 5,359 2,462 Totals 12,032 10,539 10,324 12,522 8,406 Aligns with data in DWR Standardized Tables 6-1 R and 6-1 W. May Public Review Draft

43 Section 4 Groundwater Management The 1978 Chino Basin Judgment, included in Appendix J, 13 requires that Watermaster develop a management plan for the Chino Basin that meets water quality and water quantity objectives for the region. Three primary agreements govern the adjudication and management of the basin: 1) the 1978 Chino Basin Judgment; 2) the 2000 Peace Agreement, incorporating the Optimum Basin Management Program (OBMP) Implementation Plan; and 3) the 2007 Peace II Agreement. Links to full copies of these agreements are included on the Watermaster website, A detailed discussion of these agreements and the complexities of Chino Basin groundwater management is included in Appendix K. Groundwater Storage As stated above, the Chino Basin has approximately 5 MAF of groundwater in storage and has the capacity for storing an additional 1 MAF. The Judgment and Peace Agreements have developed a system for managing storage in the Chino Basin that prioritizes use of basin storage capacity for the benefit of the producing parties (see Appendix K). Each Appropriative Pool and Overlying Non-Agricultural Pool party has the right to store supplemental water and un-produced carryover water in the basin. As of June 30, 2015, the District estimates it has a total of 26,484 AF of water in its excess carryover and local supplemental storage accounts. This quantity represents a significant reserve for use in times of drought and restrictions on other sources of supply. Conjunctive Use / Dry Year Yield Program Conjunctive use is the coordinated operation of surface and groundwater resources, storage, and conveyance facilities to ensure full utilization of available supplies. During wet years when surface water is more readily available, its usage is increased and/or placed into groundwater storage. Then, during dry years, usage of groundwater is increased, offsetting demands on constrained surface water supplies. Chino Basin producing parties, including the District, have actively engaged with Watermaster, IEUA, and MWD to develop conjunctive use programs that make use of available basin storage and production facilities. In 2004, a series of agreements were executed to implement the Dry Year Yield (DYY) Program with MWD. The DYY Program provided financing to develop facilities capable of producing 33,000 AFY during a dry year out of a designated 100,000 AF storage account. The participants are required to reduce (shift) their imported water usage by a predetermined amount during a dry year. Each participating agency has a specific shift obligation that, when added together, provide MWD with a total of 33,000 AFY of dry year supply. The DYY Program storage account is currently empty. 13 In September 2012, the Court ordered that a Restated Judgment serve as the official and legally operative copy of the Judgment. All Judgment references in this plan are to the 2012 Restated Judgment. Public Review Draft 4-11 May 2016

44 Section 4 Monte Vista Water District 4.3 STATE WATER PROJECT The State Water Project (SWP) is a water storage and delivery system that provides supplemental water to 25 million people, two-thirds of California's population, and approximately 750,000 acres of irrigated farmland. The SWP is comprised of 34 storage facilities, 20 pumping plants, four pumping-generating plants, five hydroelectric power plants, and about 701 miles of open canals and pipelines. Its main purpose is to store water and distribute it to 29 urban and agricultural water suppliers in northern California, the San Francisco Bay area, the San Joaquin Valley, the Central Coast, and southern California. The SWP is maintained and operated by the California Department of Water Resources. Over the past decade, approximately 40 percent of the District's water supply portfolio is obtained from the SWP. The imported SWP surface water originates in northern California and is transported via the California Aqueduct to Lake Silverwood in the San Bernardino Mountains. This water is extracted from the lake and directed to the Rialto Feeder, a large pipeline owned by Metropolitan Water District of Southern California that travels along the foothills delivering water to area surface water treatment plants. The Water Facility Authority s Aqua de Lejos Treatment Plant in Upland treats the surface water delivered by this pipeline to meet drinking water standards and then distributes it to its member agency owners, including the District Metropolitan Water District of Southern California Metropolitan Water District of Southern California (MWD) was formed in the late 1920s to bring imported water to the southern California region. Collectively, the 13 charter members recognized the limited water supplies available within the region, and realized that continued prosperity and economic development of southern California depended on the acquisition and careful management of an adequate supplemental water supply. This foresight made the continued development of southern California possible. MWD acquires water from northern California via the SWP and from the Colorado River to supply water to most of southern California. As a wholesaler, MWD has no retail customers, and distributes treated and/or untreated water directly to its 26 member agencies, including Inland Empire Utilities Agency (Figure 4-3). MWD member agencies receive imported water at various delivery points on its system, and pay for it at uniform rates for each class of service established by the Board of Directors. Historically, MWD has been responsible for importing water into the region through its Colorado River Aqueduct and the SWP. Recently, MWD has increased its ability to supply water, particularly in dry years, through implementation of storage and transfer programs. Over the last decade, MWD supplied between percent of the municipal, industrial, and agricultural water used within its boundaries MWD 2015 UWMP (Draft March 2016). May Public Review Draft

45 Section 4 Figure 4-3: Metropolitan Water District of Southern California Boundaries and Member Agencies Metropolitan Water District of Southern California, Public Review Draft 4-13 May 2016

46 Section 4 Monte Vista Water District Figure 4-4: Inland Empire Utilities Agency Boundaries Courtesy of Inland Empire Utilities Agency, 2016 May Public Review Draft

47 Figure 4-5: Water Facilities Authority Member Agencies Public Review Draft 4-15 May 2016

48 Section 4 Monte Vista Water District Figure 4-6: San Antonio Water Company Water Supply Sources May Public Review Draft

49 Section Inland Empire Utilities Agency Inland Empire Utilities Agency (IEUA) was formed in 1950 to become a member of MWD for the purpose of importing supplemental water to augment local supplies. Since its formation, IEUA has expanded its services to include production of recycled water, distribution of imported and recycled water supplies, sewage treatment, co-composting of manure and municipal biosolids, desalinization of groundwater supplies, and disposal of non-reclaimable industrial wastewater and brine. IEUA wholesales MWD imported water to three entities: Cucamonga Valley Water District, Fontana Water Company, and the Water Facilities Authority. Although both SWP and Colorado River supplies are available to the region, only SWP supplies are currently used due to groundwater quality constraints (see Section 5.2.2). All three entities take raw imported water deliveries from IEUA and treat it to drinking water standards through independently owned water treatment plants Water Facilities Authority The Water Facilities Authority (WFA) is a joint exercise of powers authority formed in 1980 under California Government Code Section 6500 et seq. to provide water supply and distribution services to its members. Currently there are five WFA members: the District and the cities of Chino, Upland, Ontario, and Chino Hills (see Figure 4-5). In , the WFA built the Agua de Lejos Water Treatment Plant, located in Upland, to receive raw SWP water, treat it to drinking water standards, and distribute the treated water to its five member agencies. The WFA currently is permitted to treat 81 mgd of SWP water, which it receives through MWD s Rialto Branch of the Foothill Feeder. Over the past 10 years, treated water deliveries to the District have ranged from none in the winter months to as high as 30.5 mgd (July 13, 2016) in the summer. WFA water enters the District s potable water distribution system through two turnouts, and the District provides WFA water to Chino Hills through another: Turnout Number 1 at Arrow Highway and Benson Avenue Turnout Number 2 at Benson Avenue and 17th Street City of Chino Hills turnout at Ramona Avenue, south of Philadelphia Street Treated water is normally delivered into the District s distribution system at Plant 4 after recovering energy using three hydroelectric turbine generators. Water can also be diverted from the Ramona Feeder to reservoirs or through pressure reducing valves. Public Review Draft 4-17 May 2016

50 Section 4 Monte Vista Water District The District is entitled to 24 percent of the WFA Agua de Lejos Plant capacity (21,776 AFY). The District can take delivery of more than its entitlement when other WFA members are not taking delivery of their full entitlements. Historically, there has always been unused capacity and the District has always had an opportunity to meet water quality standards and demands through additional WFA imported water. Many of the WFA members desire less dependence on imported water and greater reliability and control on local supplies. As a result, development of water supply programs has increased and the continued opportunity for purchase of unused capacity is anticipated. Discussions on the opportunity to increase the capacity of the WFA treatment plant have occurred; however, analysis would need to be done to determine feasibility and economic benefits considering the climate of imported water reliability. The plant could be increased to 88 mgd through re-rating of the existing plant, and further capacity increases would need to be accomplished by plant expansion. 4.4 SAN ANTONIO WATER COMPANY San Antonio Water Company (SAWCo), which was incorporated in October 25, 1882, is a privately owned mutual water company. Its shareholders are entitled to water supply based on the amount of owned shares and available water supply or SAWCo s ability to produce water. SAWCo delivers domestic and irrigation water to a variety of shareholders. These shareholders include most residents of San Antonio Heights (an unincorporated area of San Bernardino County), the District, the cities of Upland and Ontario, local golf courses, rock quarries, and grove irrigators. There are a total of 6,389 outstanding SAWCo shares. Upland is the largest shareholder with over 70 percent of the total outstanding shares, and the domestic customers of San Antonio Heights as a group represents the second largest block of shares owning roughly 10 percent of the outstanding shares. The District currently owns SAWCo outstanding shares, about 5.2 percent of the total. According to the current Bylaws of SAWCo, there are two classes of service determined by the principal use known respectively as domestic and irrigation. Any water delivered to a user other than domestic customers in San Antonio Heights is considered irrigation use. SAWCo s sources of domestic water supply include groundwater from the San Antonio Tunnel, Chino Groundwater Basin, and Cucamonga Groundwater Basin, and a small amount of purchased water from the City of Upland. SAWCo s sources of irrigation water supply include both surface water from the San Antonio Canyon and groundwater from Chino Groundwater Basin, Cucamonga Groundwater Basin, and the Six Basins area. Surface water from the San Antonio Canyon is used for irrigation, spreading over the San Antonio Tunnel for domestic supply, and delivered to the City of Upland s Surface Water Treatment Plant for domestic supply. May Public Review Draft

51 Section 4 Total annual water supply over the past decade ranged from 20,213 AFY in 2005 to 9,074 AFY in SAWCO s production rights total approximately 30,000 AFY. Roughly 80 percent of total deliveries are to non-domestic irrigation customers, primarily municipalities. SAWCo has generally fully utilized its water rights in all sources except San Antonio Creek. 15 Currently, each share is entitled to AFY of water deliveries, for a total annual supply of 11,552 AFY. This is a decline from a pre-drought entitlement of AFY per share, or 16,574 AFY in total annual supply. For the purposes of this Plan, the District will utilize SAWCo s pre-drought entitlement for normal year and post-drought entitlement for single and multi-dry years. In September 2010, SAWCO and the District entered into a Water Service Agreement, pursuant to which SAWCO may transfer to the District the right to pump the District s share of the SAWCO entitlement from the Chino Groundwater Basin. Since then, SAWCo and the District have developed additional delivery options, including a wheeling agreement with the City of Upland, an interconnection with the WFA, and transfer of groundwater production rights from Six Basins to the Chino Basin through the City of Pomona. Due to the drought, SAWCo allowed the District s Water Service Agreement lapse at the end of its five-year term (December 31, 2015). The District is currently coordinating with SAWCo and its other municipal shareholders to develop new service agreements consistent with existing conditions. SAWCo s water supply sources include surface water and groundwater. Surface water is obtained from the San Antonio Watershed. Groundwater sources include the San Antonio Tunnel, Chino Groundwater Basin, Cucamonga Groundwater Basin, and the Six Basins area. The following sections provide detailed descriptions of each source Surface Water Supply San Antonio Canyon SAWCo has rights to surface flow from San Antonio Creek, which appear to be pre-1914 rights and over the years have been supported by court judgments. These water rights are expressed in miner s inches (MI), which are equivalent to one cubic foot per second (cfs). SAWCo has surface water rights in the San Antonio Canyon as follows: SAWCo has rights to the first 17 percent of all flow from the San Antonio Creek. After deducting 17 percent of the total flow, SAWCo has a priority to the next 18 MI of the remaining flow. 15 SAWCo, May 18, 2016; SAWCo 2014 Annual Report; SAWCo Water System Master Plan, February Public Review Draft 4-19 May 2016

52 Section 4 Monte Vista Water District After deducting the 17 percent of the total flow and the 18 MI, the balance is divided equally between SAWCo and the West Side Owners (WSO) (currently Pomona Utility Service District), until WSO s share equals 312 MI. After WSO s entitlement of up to 312 MI, SAWCo is entitled to divert all additional flow as long as its total diversion does not exceed 740 MI (January 1 to March 31) or 965 MI (April 1 to December 31) annually. It is not clear what rights SAWCo has to diversions in excess of the above amounts for domestic use. SAWCo does have rights to spread flows in excess of 10,000 MI for recharge of local groundwater basins. 16 According to SAWCo, its total rights to surface water from San Antonio Canyon is 17,460 AFY. 17 Surface water diverted from the San Antonio Creek and the San Antonio Tunnel water (discussed below) may be used for domestic purposes, irrigation, and/or spreading in the Cucamonga Basin or elsewhere Groundwater Supply 18 SAWCo utilizes various groundwater sources including the San Antonio Tunnel and groundwater wells in Chino Groundwater Basin, Cucamonga Groundwater Basin and the Six Basins area. SAWCo also engages in spreading operations that enhance the groundwater supply available to SAWCo. These groundwater sources are described below and shown in Figure 4-6. San Antonio Tunnel The San Antonio Tunnel is the primary water supply for SAWCo s domestic water system. SAWCo has rights to all water flowing in the San Antonio Tunnel. Groundwater wells are available to augment the tunnel water supply. Since 1988, the maximum production measured from the San Antonio Tunnel was 4,171 AFY which occurred in However, the natural supply available to SAWCo from this source is uncertain considering tunnel water flow is enhanced when natural flows are low from spreading San Antonio Canyon water, which is already counted as a source. In general there appears to be a potential correlation between the San Antonio Canyon flow and base flow in the San Antonio tunnel, which is estimated to be approximately 1,050 AFY. 16 SAWCo Water System Master Plan, February SAWCo 2014 Annual Report. 18 SAWCo Water System Master Plan, February 2010, unless otherwise indicated. May Public Review Draft

53 Section 4 Portions of the deep rock tunnel, a 4-foot by 4-foot rectangular tunnel constructed in 1885, are supported by redwood and rock beams and are situated approximately 100 feet below the ground surface. The deep rock tunnel is fed by groundwater that naturally percolates through the subsurface into the deep rock tunnel. The tunnel is also fed by a portion of water from the San Antonio Canyon, which is diverted into spreading grounds above the tunnel. Water collects in the deep rock tunnel, is piped to SAWCo s Forebay, chlorinated, and piped to SAWCo s potable water reservoirs. Chino Groundwater Basin SAWCo overlies the northwesterly portion of the Chino Groundwater Basin and has an appropriative right of 2,164.5 AFY, which represents percent of the Basin OSY. Although subject to change, the OSY of the Basin has historically been 54,834 AFY, of which SAWCo is entitled to 1, AFY. Recently, agricultural pool water transfers to SAWCo have averaged approximately 795 AFY, though these will decline significantly upon Court adoption of the 2015 Safe Yield Reset Agreement. For more information on the Chino Groundwater Basin, see Section 4.2. Cucamonga Groundwater Basin The Cucamonga Groundwater Basin is located east and north of the Red Hill Fault in the northeastern section of the City of Upland. In 1958, a stipulated Cucamonga Basin Judgment allocated groundwater within the Cucamonga Basin to 24 stipulating parties, which today consists of SAWCo, West End Consolidated Water Company, and Cucamonga Valley Water District. The Cucamonga Basin Judgment stipulates SAWCo s water production as 6,500 AFY, provided SAWCo spreads an average 2,000 AFY of imported water (from the San Antonio Canyon and/or Creek) into the Cucamonga Groundwater Basin, based on a 10- year rolling average. However, if SAWCo s average annual spreading is less than 2,000 AFY during the 10-year average, SAWCo s stipulated water right of 6,500 AFY can be reduced by up to 2,000 AFY, to a minimum total of 4,500 AFY. Conversely, if SAWCo s average annual spreading is more than 2,000 AFY, SAWCo s stipulated water right of 6,500 AFY can be increased by up to 2,000 AFY, to a maximum total of 8,500 AFY. Only 95 percent of the water spread (up to a maximum of 2,105 AF spread) can be used to augment SAWCo s stipulated right above 6,500 AFY. In summary, to maximize its stipulated water right up to 8,500 AFY, SAWCo is required to spread an average of 4,105 AFY (2, ,105) of imported water over a rolling 10-year period. There are currently discussions underway regarding revising the management of the Cucamonga Groundwater Basin to modernize the Judgment and establish storage accounts. Public Review Draft 4-21 May 2016

54 Section 4 Monte Vista Water District Six Basins Area The Six Basins area is located north of the San Jose Hills, west of Chino Basin, south of the San Gabriel Mountains, and east of the Main San Gabriel Basin. The Six Basins area consists of six interconnected groundwater basins, which includes the Four Basins (Canyon, Upper Claremont Heights, Lower Claremont Heights, and Pomona) and the Two Basins (Live Oak and Ganesha). SAWCo operates groundwater wells overlying the Upper Claremont Heights Groundwater Basin and owns rights to produce groundwater from the Four Basins area. SAWCo s initial water right in Six Basins is about 1,383 AFY, or percent of the Four Basins annual OSY as determined by Six Basins Watermaster. In 2006, SAWCo established a storage and recovery account with Six Basins Watermaster that allows SAWCo to recharge up to 1,000 AFY and up to two years of storage. Thus SAWCo s stipulated initial water right in Six Basins can be increased by up to 2,000 AFY to a maximum total of 3,383 AFY. The OSY of Four Basins for 2016 is 16,000 AFY. SAWCo is currently entitled to 1,146.6 AFY and has a storage account balance of 1,390.7 AF. 19 The Six Basin Judgment did not allocate any production rights from the Two Basins to SAWCo. In addition, rights to the Four Basins and Two Basins are not transferable between the two basins. However, rights may be transferable from within the Four Basins if certain conditions are met. Parties to the Six Basins Judgment are authorized to produce groundwater in addition to the allocated amounts within Four Basins. Such extractions result in an assessment by Six Basins Watermaster to pay for water to replenish Four Basins through imported surface water recharge. 4.5 INLAND EMPIRE UTILITIES AGENCY RECYCLED WATER The District receives recycled water from IEUA s wastewater treatment plants and regional recycled water distribution system, which the District then delivers through its retail distribution system to 18 sites for non-potable landscape irrigation. Water recycling is a critical component of the water resources management strategy for the region. Reuse of highly treated tertiary water is a source of water available to meet the growing water demands of the region, including the District. Recycled water is a proven technology and a dependable, drought-resilient local water supply. In addition, the use of recycled water for groundwater recharge is an integral part of local groundwater management. 19 Six Basins Watermaster Board Packet, May 25, May Public Review Draft

55 Section 4 For background information on IEUA s regional recycled water program, see Section 2.2 of the District s Recycled Water Master Plan (Appendix L). Figure 4-7 shows the current extent and planned expansion of IEUA s regional recycled water distribution system. IEUA operates four regional wastewater treatment plants that produce disinfected and filtered tertiary treated recycled water in compliance with California s Title 22 regulations: Regional Plants (RP)-1, RP-4, RP-5 and the Carbon Canyon Water Reclamation Facility (CCWRF). A fifth treatment plant, RP-2, was decommissioned in 2004 because it is located in a potential flood zone. Additional sources of recycled water that is received and used within IEUA s service area include the Upland Hills Water Reclamation Plant (operated by the City of Upland) and the California Institution for Men Water Reclamation Plant (operated by the California Institution for Men at Chino). IEUA s facilities serve eight contracting agencies: the cities of Chino, Chino Hills, Fontana, Montclair, Ontario, and Upland, Cucamonga Valley Water District, and unincorporated areas of San Bernardino County within the IEUA service area. The District has developed a retail recycled water distribution system to deliver recycled water purchased from the City of Montclair and delivered by IEUA s regional distribution system (Figure 4-8). The District currently delivers an average of 340 AFY to seven District customers at 18 different locations for landscape irrigation. The District developed a Recycled Water Master Plan in 2011 which projects near-term expansion of its recycled water distribution system to serve up to 430 AFY (see Section and Appendix L) Wastewater Treatment IEUA manages the Regional Sewage Service System within its 242-square miles service area to collect, treat, and dispose of wastewater delivered by contracting local agencies. IEUA s facilities serve seven contracting agencies: the cities of Chino, Chino Hills, Fontana, Montclair, Ontario, and Upland, and Cucamonga Valley Water District. A system of regional trunk and interceptor sewers convey sewage to regional wastewater treatment plants, which are all owned and operated by IEUA. Local sewer systems are owned and operated by local agencies. Wastewater Treatment Plants IEUA operates four regional water recycling production plants: Regional Plant No.1 (RP- 1), RP-4, RP-5, and the CCWRF. A fifth treatment plant, RP-2, was decommissioned in 2004 because it was in a potential flood zone due to of the Prado Dam project. Each facility that produces recycled water is briefly described below: Public Review Draft 4-23 May 2016

56 Section 4 Monte Vista Water District Figure 4-7: IEUA Regional Recycled Water Distribution System Current and Projected Inland Empire Utilities Agency, May Public Review Draft

57 Section 4 Figure 4-8: Existing Retail Recycled Water Distribution System Public Review Draft 4-25 May 2016

58 Section 4 Monte Vista Water District RP-1 began operation in 1948 through a joint powers agreement between the cities of Ontario and Upland. IEUA, then known as Chino Basin Municipal Water District, purchased RP-1 in January Its current capacity is 44 mgd. RP-1 serves all or part of the cities of Ontario, Rancho Cucamonga, Upland, Montclair, Fontana, and unincorporated areas of San Bernardino County. CCWRF has been in operation since The recycled water plant capacity is 11.4 mgd, while solids are treated at RP-2. CCWRF serves the cities of Chino, Chino Hills, Montclair, and Upland. RP-4 was completed in 1997 and recently expanded to 14 mgd. RP-4 serves Cucamonga Valley Water District, the City of Fontana, and unincorporated areas of San Bernardino County in the northeast portion of the IEUA service area. RP-5 began operation in March The 15 mgd plant serves existing and planned development in the cities of Chino, Chino Hills, and Ontario. Figure 4-7 shows the location of regional wastewater treatment plants and recycled water distribution lines. The combined production of the current wastewater treatment plants is 61,944 AFY (55.3 mgd). By 2035, the plants are expected to produce 82,330 AF of water (73.5 mgd). 20 Table 4-5 shows the estimated wastewater collected and treated from the District s service area in It should be noted that, because IEUA s regional recycled water system is fully integrated, the District s recycled water customers are not necessarily delivered recycled water which originated from its service area. Table 4-5: Estimated Wastewater Collection from Retail Service Area (AFY) Wastewater Collection 2015 Wastewater Collected in District Service Area 2,464 Aligns with data in DWR Standardized Table 6-2 R. IEUA, May 18, Estimate based on Montclair's percentage of total IEUA wastewater flows. Wastewater Treatment Process All of IEUA s wastewater treatment plants produce recycled water that meets or exceeds the requirements of the California State Water Resources Control Board Title 22 for recycled water. 20 IEUA 2015 Recycled Water Program Strategy, October May Public Review Draft

59 Section 4 The treatment process begins with raw sewage that is collected from the local cities. The raw sewerage is passed through screening and grit removal units, primary clarifiers, aeration basins, secondary clarifiers, chemical addition, tertiary filters, chlorination, and finally dechlorination facilities prior to discharge. Some of the effluent flow is placed into the nearby creeks and allowed to flow ultimately into the Santa Ana River where it is recharged into Orange County s groundwater basin. The remainder of the flow is pumped into IEUA s recycled water distribution system for reuse. Solids removed from the liquid treatment processes are thickened and stabilized in anaerobic digesters before being dewatered and transported to the Agency's composting facility in Rancho Cucamonga which is a joint venture with Los Angeles County Sanitation District. IEUA maintains a federal- and state-approved industrial pre-treatment program for industrial discharges to the sewage system that requires dischargers to comply with water quality objectives and to submit periodic monitoring reports to IEUA. IEUA produces a supply of highly polished tertiary-treated water suitable for irrigation, industrial water supply, groundwater recharge, environmental enhancement, and unrestricted recreation use such as boating and fishing Existing Recycled Water Program Supplies Currently, IEUA produces about 56,000 AFY of recycled water and uses just over 33,000 AF annually (see Table 4-8). The remaining supply of recycled water, about 23,000 AF, was discharged to the Santa Ana River for reuse in Orange County. Recharge of recycled water into the Chino Basin is projected to increase over the 25-year planning horizon (see Section and Table 4-8). A transmission line connecting RP-1 and RP-4 serves as part of the backbone system for recycled water use in the northern portion of IEUA s service area. The District s current retail recycled water distribution system relies on deliveries from this portion of IEUA s regional system, specifically through the San Antonio Channel Pipeline which provide recycled water service to Ontario and Montclair. It should be noted that, because IEUA s regional recycled water system is fully integrated, IEUA is capable of delivering recycled water from any of its RPs to meet the demands of the District s recycled water customers. In 2015, the District delivered 308 AF to its recycled water customers and purchased 483 AF of the City of Montclair s share of regional recycled water groundwater recharge. As shown in Table 4-6, this is 515 AF less than the amount projected in the District s 2010 UWMP, mostly due to delay in expanding the District s recycled water distribution system and the regional recharge program. With the connection of additional customers, it is estimated that recycled water sales will eventually reach 430 AFY. Public Review Draft 4-27 May 2016

60 Section 4 Monte Vista Water District Table 4-6: 2015 Recycled Water Use vs UWMP Projection (AFY) Use Type 2015 Actual Use 2010 Projection for 2015 Landscape Irrigation Groundwater Recharge Aligns with data in DWR Standardized Table 6-5 R. All amounts in AF for fiscal year totals Current and Projected Recycled Water Use in District Service Area Table 4-7 shows the current and projected recycled water usage in the District s service area through This includes direct reuse by the District s recycled water customers and indirect reuse through groundwater recharge credits. The recycled water use projections to 2040 are consistent with IEUA s projections included in its 2015 Recycled Water Program Strategy (October 2015). Table 4-7: Current and Projected Recycled Water Uses (AFY) Landscape Irrigation Groundwater Recharge Totals 791 1, ,019 1,069 1,069 Aligns with data in DWR Standardized Table 6-4 R. 1 Actual values from District records : City of Montclair estimated portion (4.3%) of IEUA s projected recycled water recharge (Table 4-8). 4.6 PLANNED WATER SUPPLY ENHANCEMENT PROJECTS Due to past investments, the District currently has a reliable and drought-resilient water supply capable of meeting projected demands over the next 25 years and beyond. However, the District continues to invest in maintaining existing water supplies and infrastructure, and actively seeks opportunities to further enhance the reliability, affordability, and resiliency of its water supply portfolio. This section summarizes planned District and local projects to enhance the reliability of the District s water supplies, including a review of the District s capital improvement plan and consideration of partnership, groundwater recharge, transfer and exchange, recycled water, and desalination opportunities available to the District. May Public Review Draft

61 Section 4 For information on regional and wholesale water supply enhancement projects, please refer to the SAWCo, WFA, IEUA, and MWD s Capital Improvement Plan The District s Capital Improvement Plan (CIP), last updated in its 2008 Water Master Plan, is a comprehensive, prioritized outline of recommended projects that involve the repair and/or replacement of existing domestic water system facilities and improvements for future needs. The CIP lists specific prioritized capital improvement projects over the next 10 years and general improvements and projects envisioned over the next 30 years. The CIP includes a variety of potable water system improvements that are necessary to eliminate current deficiencies as well as improvements for the purpose of providing reliable water services through the year The accompanying Financial Master Plan, last updated in 2015, provides a mechanism for funding the identified capital projects at a cost of $35.5 million over the next 10 years and $96.7 million over the next 30 years. Projects include: A comprehensive pipeline replacement/rehabilitation program; Construction of three new wells and retrofitting an existing well maintain existing groundwater production capacity; Installation of two back-up power generators at key wells for additional supply reliability during emergency conditions; A booster pump station retrofit and capacity enhancement project; and, Seismic and plant improvements to various District facilities Groundwater Recharge Opportunities In 2013, Chino Basin Watermaster, in partnership with IEUA, completed a stakeholder process of developing an amendment to its 2010 Recharge Master Plan Update (2013 RMPU). The 2013 RMPU identifies a suite of yield enhancement and production sustainability projects to increase recharge and maintain sustainable production in the Chino Basin. The projects are estimated to achieve 6,780 AFY in increased stormwater capture and recharge and 4,900 AFY in recycled water recharge, for a combined increased recharge of 11,680 AFY. Public Review Draft 4-29 May 2016

62 Section 4 Monte Vista Water District Watermaster and IEUA have begun the process of implementation. Some projects have been determined to be no longer viable, and some additional projects have been recommended for inclusion, but the process continues to move forward. Additionally, the 2015 Safe Yield Reset Agreement, if approved by the Court, establishes a process for Appropriative Pool parties to opt-in and opt-out of participation in project development. The District will continue to participate in the process of developing these projects, and may decide to participate in financing project construction in return for additional basin yield Partnership Opportunities The District is constantly seeking partnership opportunities with local and neighboring agencies to develop more reliable, cost-effective water supplies. City of Pomona The District and the City of Pomona have developed a strong working relationship and are collaborating on a number of water supply development projects. In addition to working together with IEUA on a recycled water interconnection study (see below), the District and City have identified significant opportunities to share rights, resources, and infrastructure in order to access and develop low-cost water supplies for the mutual benefit of each agency. In September 2015, the District and City entered into a Memorandum of Understanding (MOU) to cooperate in the development of water supplies, implement best practices, and reduce operational costs. Water Facilities Authority Historically, there has always been unused capacity in the WFA s Agua de Lejos water treatment plant, and the District has always had an opportunity to meet water quality standards and demands through additional WFA imported water. Many of the WFA members desire less dependence on imported water and greater reliability and control on local supplies. As a result, the development of local water supply programs has received increased attention and the continued opportunity for utilization of unused WFA treatment capacity is anticipated. Discussions on the opportunity to increase the capacity of the WFA treatment plant have occurred; however, analysis would need to be done to determine feasibility and economic benefits considering the climate of imported water reliability. The plant could be increased to 88 mgd through re-rating of the existing plant, and further capacity increases would need to be accomplished by plant expansion. May Public Review Draft

63 Section Transfer and Exchange Opportunities Water transfers are a water management concept with great potential for helping to alleviate water shortages in the region and across the state. The concept is that two agencies, one willing seller of water and one willing buyer, can enter into an exchange agreement that is mutually beneficial from a water management point of view. Water transfers allow an agency to move water from one service area to another, even when the two agencies are not connected by any pipelines. As a water management tool, water transfers can be effective during periods of severe drought or emergencies. Water transfers, as shown below, can take multiple forms to increase water supply reliability among agencies. Chino Groundwater Basin Transfers and Conjunctive Use The District s ability and right to use a portion of the vast storage capacity of the Chino Basin, and ability to spread significant quantities, gives additional flexibility, particularly if transfer water is available. According to the Peace Agreement, transfers include the assignment, lease, or sale of a right to produce water to another producer within the basin or to another person or entity for use outside the basin whether the transfer is temporary or permanent. Lease of water rights are also permissible to allow producers to make up for the lessee s over-production. The Chino Basin is also a valuable resource for water transfers because of its ability to be a storage facility for multiple sources of water. Because of the basin s tremendous capability to store water, outside agencies are encouraged to enter into agreements with producing parties to store water. For example, another agency who is a contractor to the SWP may wish to store their surplus SWP water in the basin for future droughts or emergencies. When they need their stored water, the outside agency simply asks the basin agency to pump and utilize the stored water while the outside agency takes direct delivery through the SWP. Funding was allocated for conjunctive use programs through Proposition 13, the Water Bond passed by California voters in March The District participated in the groundwater recovery program by constructing new wells and converting inactive wells to injections/recovery wells that utilize imported water during period of low demand to recharge the basin. Water stored under this program could be utilized to meet demand during periods of drought. In the near future, the Santa Ana River Conservation and Conjunctive Use Program (SARCCUP) is being developed through the Santa Ana Watershed Project Authority (SAWPA) utilizing Proposition 28 Integrated Regional Resource Planning grant funds. Though still in its formative stages, SARCCUP seeks to create a watershed-wide conjunctive use program. Public Review Draft 4-31 May 2016

64 Section 4 Monte Vista Water District Interconnections Local water agencies have the ability to enter into contracts between each other to provide water on an annual basis or on an as-needed basis. The District currently has six emergency connections to receive water from the Golden State Water Company and the cities of Chino, Chino Hills, and Upland. The connection with the company can be used for emergencies to serve the City of Claremont. The other interconnections allow water to be supplied or received. The District has utilized the emergency connection when the WFA treated deliveries were interrupted, as well as to received deliveries of purchased or entitlement water supply from the City of Upland and SAWCo Recycled Water Opportunities There are many opportunities for the District to expand the direct and indirect reuse of recycled water to offset or enhance potable water supplies. Although the District has established a recycled water retail distribution system to serve most of its major landscape irrigation customers in the City of Montclair, it has identified additional potential recycled water customers in its 2011 Recycled Water Master Plan (Appendix L) for a potential additional use up to 100 AFY of recycled water by Also, recycled water used to recharge the Chino Basin is expected to expand and increase the District s pumping rights in the basin. Recycled Water Availability Region-wide, available recycled water supplies are projected to reach 66,312 AFY in In conformance with the 1969 Santa Ana River Judgment, a minimum of 17,000 AFY of water will be discharged to the Santa Ana River. This leaves more than 49,000 AFY of recycled water available for beneficial reuse within the IEUA service area by Table 4-8 shows the projected future uses of IEUA s recycled water supply. Table 4-8: Current and Projected Regional Recycled Water Supplies and Usage (AFY) Recycled Water Supply 56,384 66,312 71,913 77,514 82,330 Santa Ana River Discharge 17,000 17,000 17,000 17,000 17,000 Direct Use Demand Forecast 22,579 30,757 36,507 40,320 43,019 Groundwater Recharge 10,840 13,977 13,027 13,707 14,871 Remaining Supply 5,965 4,578 5,379 6,487 7,440 Sources: IEUA, May 19, 2016; IEUA 2015 Recycled Water Program Strategy. May Public Review Draft

65 Section 4 Recycled Water for Groundwater Recharge As shown in Table 4-8, recharge of recycled water in the Chino Basin is expected to peak at roughly 15,000 AFY in The City of Montclair s percentage allocation of this recharge is currently 4.3 percent, providing the District with up to 640 AFY of recycled water recharge which becomes part of the District s groundwater production rights (see Section 4.2.2). Montclair s percentage allocation of this total recharge is expected to decrease due to increased wastewater contributions from the cities of Ontario and Chino. Recycled Water Interconnection and Recharge Study In 2015, the District, the City of Pomona, and IEUA contracted with Carollo Engineers to develop a recycled water interconnection and recharge feasibility study. The study assessed the viability of interconnecting facilities owned and operated by the District, City, and IEUA to convey treated recycled water to direct use recycled water customers, groundwater recharge basins, and aquifer storage and recovery (ASR) well locations. The study identified a preferred alternative which would generate an estimated 3,500 AFY of additional water supply for the region. The agencies are further evaluating alternatives and seeking grant funding for the proposed project. Encouraging Recycled Water Use The District has and will continue to encourage recycled water use by potential recycled water users through a variety of measures. The District is confident that, when performed collectively, these measures will result in an increase in recycled water use through Customer Development Process Through the first phase of its recycled water system development, the District successfully implemented the process of developing recycled water customers from identification to final system connection. However, the expansion of the District s recycled water system as described in this Plan will require a more comprehensive customer development process. The District s first recycled water users have for the most part been large public sector institutional customers, most notably the City of Montclair, Ontario Montclair School District, and Chaffey Joint Union High School District. While the District will continue to work with these large customers in identifying new sites for recycled water use, the District will also focus more on smaller private sector customers, including nurseries, farms, multi-family residential developments, and commercial establishments. The District will draw on its experience working with its initial customers, including public agency partners as well as Montclair Hospital Medical Center, Montclair Towncenter Homeowners Association, and Our Lady of Lourdes Catholic Church, in developing a more robust private sector customer development process. Public Review Draft 4-33 May 2016

66 Section 4 Monte Vista Water District Table 4-9: Ten-Step Process for Recycled Water Customer Development Step Description Share of Total Effort 1. Site Information Confirm location and status of site 3% 2. Site Assessment 3. Site Assessment Summary Milestone 1 4. Letter of Commitment 5. Regulatory Approval 6. Construction Estimates 7. Retrofit Financing Agreement Milestone 2 8. Construction Oversight 9. Final Cross- Connection Test 10. Prepare As-Built Drawings Contact site representative; introduce District, 20% opportunity of recycled water availability Gather onsite water system information; develop schematics; determine tasks to convert to 5% recycled water; develop cost estimate Sufficient viable potential customers exist along alignment to proceed with recycled water lateral development Recommend at this stage using letters of commitment rather than formal agreements to 5% secure intent without threat of punitive action Prepare draft schematics of conversion to recycled water; confirm accuracy with end user; 42% send to State Board and County Department of Health Services for review and tentative approval Obtain three bids from qualified contractors; 5% select one to complete retrofit work As required, prepare and circulate retrofit 5% financing agreement Sufficient progress achieved prior to lateral construction Perform site inspections; document compliance 5% with State Board regulations Perform final cross-connection test with County 5% State Board; obtain final project approval Modify schematics to comply with actual 5% construction; distribute to customer, regulators The District will also build on the experience of other recycled water distribution systems in developing a diverse and robust recycled water customer base. Central Basin and West Basin Municipal Water Districts in Los Angeles County developed a ten-step customer development process that assisted them to quickly identify, assess, and secure potential recycled water customers in order to secure available MWD funding. The steps, outlined in Table 4-9, represent the major events during their customer development process and estimate the effort associated with those steps. Many potential customers have in the past expressed interest in converting their sites to use recycled water. These customers, including the City of Montclair, Omnitrans, Montclair Towncenter Shopping Center, The Pines Apartments, and the Girl Scouts, have responded positively to the District s initial inquiries and preliminary site investigations to determine near-term expansion possibilities (see Appendix L, Section 9.2). May Public Review Draft

67 Section 4 Financial Incentives The District s recycled water rate is lower than its potable flat water rate, which helps to incentivize use of recycled water. The District has also identified external funding to assist potential recycled water customers in offsetting the expense of retrofitting their onsite irrigation systems to use recycled water (see Appendix L, Section 6). Plumbing Codes The District s Ordinance 31 requires all new residential, commercial, and industrial developments have dual plumbing so that recycled water (when available) can be used for outdoor irrigation and other non-potable water uses. Additionally, the City of Montclair s AB 1881-compliant Water Efficient Landscape and Conservation Ordinance requires all applicable new developments to dual plumb and use recycled water, if available. The District works closely with the cities and county in which is serves regarding plumbing codes. Optimizing Recycled Water Use The District s 2011 Recycled Water Master Plan, incorporated into this UWMP as Appendix L, is the District s plan to optimize recycled water use within its service area Desalinated Water Opportunities Desalination is used to develop a local, reliable source of water that assists agencies in reducing their demand on imported water. Desalination technology currently is being used by the Chino Desalter Authority (CDA) to treat brackish groundwater at the southern end of the Chino Basin for municipal uses. The District currently does not use desalted water from the CDA. However, from a regional perspective, the CDA and other desalination projects within the region indirectly benefit the District. Desalted Groundwater Chino Groundwater Basin Consistent with the OBMP and the Maximum Benefit Program (approved by the State Board in 2005), desalting facilities must be constructed in the lower portion of the Chino Basin to remove salt and nitrates as well as to prevent poor quality water from the Basin from moving down the watershed and eventually into Orange County groundwater basins. The desalters use a combination of reverse osmosis and ion exchange technology to treat the pumped groundwater. The concentrated brine from the desalter operations is delivered by the Inland Empire Brine Line to the Orange County Sanitation District for treatment and ultimate disposal in the Pacific Ocean. Public Review Draft 4-35 May 2016

68 Section 4 Monte Vista Water District The Chino I Desalter was constructed in 2000 through a joint participation agreement among five agencies: SAWPA, Western Municipal Water District, Orange County Water District, MWD and IEUA. Located in Chino, the facility currently produces 10,000 AFY of which approximately 9,000 AF is provided as potable water supply to the cities of Chino and Chino Hills. In 2002 the CDA, a joint powers authority comprised of the Jurupa Community Services District, the Santa Ana River Water Company, and the cities of Chino, Chino Hills, Ontario, and Norco, was formed to manage the production, treatment, and distribution of water produced by this facility. The Chino II Desalter was constructed in 2007 and currently produces between 14,000 and 15,900 AFY of potable water. The Chino III Desalter is expected to be complete by 2016 and expand existing capacity by another 14,000 AFY to a total of 40,000 AFY. May Public Review Draft

69 Section 5 SECTION 5 WATER SUPPLY RELIABILITY 5.1 RELIABILITY OF DISTRICT WATER SUPPLIES Reliability is a measure of a water service system s expected success in managing water shortages. In addition to climate, other factors that can cause water supply shortages are natural disaster, such as earthquakes, chemical spills, energy outages, and water quality issues. The District and all southern California communities and water agencies are facing increasing challenges and opportunities in their role as stewards of our publicly owned water resources. The region faces a growing gap between its water requirements and its firm water supplies. Increased environmental regulations and the collaborative competition for water from outside the region have resulted in reduced supplies of imported water. Continued population and economic growth increase water demand within the region, putting an even larger burden on water supplies. Fortunately, as described in Section 4, the District and other regional agencies have invested hundreds of millions of public dollars to develop, manage, and maintain a robust portfolio of reliable water supplies. These include the Chino Groundwater Basin one of the largest groundwater basins in southern California which has been sustainably managed for nearly 40 years as well as a regional recycled water program which provides highly treated non-potable water for both direct use and groundwater recharge, and other local surface and groundwater resources. Metropolitan Water District, our regional supplemental water provider, has invested billions of ratepayer dollars in local and imported water supply reliability, and as a result is able to provide reliable imported water supply even under severe drought conditions. Due to ongoing investments in reliable supplies, the District and other regional agencies are able to reduce use of imported water during times of drought, as well as store significant amounts of surplus water during wet years for use in dry years. Over the decades, Chino Basin producers have saved nearly 400,000 acre-feet of water stored in the groundwater basin which can be safely accessed during periods of extended drought. Finally, the District provided leadership in implementing demand management and water use efficiency programs, including turf replacements, landscape irrigation survey and retrofits, efficient appliance rebates, and innovative rate structures. This section starts with a brief description of the reliability of the District s various water supplies, followed by discussions of the potential impacts on reliability due to water quality and climate. Finally, the section ends with an analysis of the District s overall water supply reliability during normal, single dry-year, and multiple dry-year periods through Public Review Draft 5-1 May 2016

70 Section 5 Monte Vista Water District Chino Groundwater Basin Supply Reliability The total maximum daily production capacity of the District s groundwater wells from the Chino Groundwater Basin is approximately 28 mgd (Table 2-3). This production capacity is sufficient to supply significantly more than the total current and projected retail water demand within the District. The District s 2008 Water Master Plan, functioning as its Capital Improvement Program, has developed a schedule of groundwater well replacement and rehabilitation to maintain, if not enhance, this production capacity through District groundwater pumping can be influenced by Chino Basin Watermaster policies, including optimizing the basin s safe yield, providing replenishment supplies to offset overproduction, levying and collecting administrative and replenishment assessments, and findings of material physical injury. Nevertheless, under the Judgment and management agreements, the District has the ability to pump sufficient groundwater to meet its water supply needs. For the purposes of reliability planning, in order to allow for equipment breakdown and other contingencies, the District estimates that its full groundwater production capacity will be available 90 percent of the time. For potential water quality impacts to the District s available groundwater supply, see Section Water Facilities Authority Supply Reliability As discussed in Section 4.3.3, the District is entitled to 24 percent of the WFA s Agua de Lejos Plant capacity, or up to 21,776 AFY. The District has never drawn its full contractual amount from WFA, having historically considered its imported water supply as supplemental to and providing redundancy for its local groundwater supply. However, even during dry years, the District may draw its full contractual amount of imported water supply through WFA; the only limitations on the District are higher Tier 2 rates during normal years and, during dry years, its DYY shift obligation and potential MWD penalty rates under allocation requirements. WFA receives imported water from MWD via the SWP. In its 2015 UWMP, MWD demonstrates its ability to provide imported water supply to its member agencies 100 percent of the time through 2040 during normal, single dry, and multi-dry year scenarios. 21 Even under a simultaneous implementation of MWD s Water Surplus and Drought Management (WSDM) Plan and the regional DYY Program, imported water supply is 100 percent reliable, although potentially subject to penalty rates (see Section 5.3). 21 MWD 2015 UWMP (Draft March 2016). May Public Review Draft

71 Section 5 MWD s Water Surplus and Drought Management Plan In 1998, MWD s Board of Directors adopted the Water Surplus and Drought Management Plan (WSDM). The guiding principle of the WSDM Plan is to manage MWD s water resources and management programs to maximize management to wet year supplies and minimize adverse impacts of water shortages to retail customers. From this guiding principle come the following supporting principles: Encourage efficient water use and economical local resource programs; Coordinate operations with member agencies to make as much surplus water as possible available for use in dry years; Pursue innovative transfer and banking programs to secure more imported water for use in dry years; and, Increase public awareness about water supply issues. In February of 2008, MWD s Board of Directors adopted the Water Supply Allocation Plan (WSAP). The WSAP was developed in consideration of the principles and guidelines described in the WSDM Plan, with the objective of creating an equitable needs-based allocation. The WSAP formula seeks to balance the impacts of a shortage at the retail level while maintaining equity on the wholesale level for shortages of MWD supplies of up to 50 percent. The WSAP was revised and readopted in For an analysis of the impact of this program s implementation in conjunction with the DYY Program see Section Recycled Water Supply Reliability Recycled water is an exceedingly reliable local water resource. According to IEUA, during a single dry year, it has been assumed that recycled water will be 100 percent reliable. During multiple dry years, reliability remains constant and continues to help reduce potable water demands as new recycled water users are added to the regional recycled water system. It has been assumed that during multiple dry years, the production of recycled water will gradually increase from 100 percent during the first dry year to 105 and 110 percent, respectively, during the next two subsequent dry years as more customers become connected to the recycled water system. Recycled water is a reliable resource not subject to droughts or imported water availability San Antonio Water Company Supply Reliability SAWCo is responsible for providing water service to its domestic and irrigation shareholders. Water is currently delivered to shareholders based on monthly entitlement and available water supply. If SAWCo is able to produce more water, entitlement increases; if less, entitlement decreases. Public Review Draft 5-3 May 2016

72 Section 5 Monte Vista Water District The last three years have provided an example of SAWCo actions in the face of reductions to its water supply. In February 2014 and then again in March 2015, due to severe drought conditions, SAWCo reduced its per-share entitlement deliveries by 18 percent and 15 percent, respectively. However, as SAWCo improves its water supply facilities and increases its ability to produce water over the next 20 years, total water supply and water supply reliability to the shareholders is expected to return to former levels and even increase. The increased water supply would also be driven by the company s shareholders looking to the water company for maximum deliveries of their entitlements. Water deliveries to these shareholders are provided by SAWCo based on the entitled shares and available water supply during different periods of the year. Maximizing the water company s deliveries to its shareholders requires making full use of the groundwater and surface water rights owned by SAWCo. The District will work with SAWCo to maximize its supply and potentially increase its per-share entitlement, thus increasing the District s total annual SAWCo entitlement. 5.2 WATER QUALITY IMPACTS ON RELIABILITY Federal regulations require the U.S. Environmental Protection Agency (EPA) to safeguard drinking water by establishing standards that limit the amount of substances in drinking water. In California, the State Water Resources Control Board (State Board) also safeguards drinking water by establishing standards that are as stringent as the EPA s. These standards, also known as maximum contaminant levels (MCL), are established in two categories: 1) primary standard: to protect the public health; and 2) secondary standard: to preserve water s aesthetic qualities such as taste, odor, clarity, and color. The District safeguards its water supply by exceeding the monitoring requirements set by the EPA and State Board. In addition to the 165 contaminants for which it regularly monitors and reports in its Annual Water Quality Report, the District safeguards the distribution system by monitoring for coliform bacteria in the distribution system and at each active well. Coliform bacteria are not necessarily harmful, but indicate the possible presence of disease-causing organisms. The District samples 16 State Board-approved locations within the distribution system weekly, and samples each active well monthly. The District also completed two source water assessment in 2002 and 2008 for its active wells to evaluate the vulnerability of water sources to contamination Chino Groundwater Basin Water Quality The Chino Groundwater Basin is a critical resource to the District. From a regulatory perspective, the use of basin groundwater to serve potable demands is limited by drinking water standards, groundwater basin water quality objectives, and Santa Ana River water quality objectives Annual Water Quality Report, May Public Review Draft

73 Section 5 The groundwater quality in basin is generally very good, with better groundwater quality found in the northern portions of the basin where recharge occurs and where District groundwater wells are primarily located. Salinity and nitrate concentrations increase in the southern portion of the basin resulting from past and continuing agricultural uses. Other constituents that have the potential to impact groundwater quality from a regulatory standpoint are certain volatile organic compounds, arsenic, and perchlorate. There are a number of point source releases of VOCs in the basin that are in various stages of investigation or cleanup. There are also known point source releases of perchlorate (Milliken Valley Sanitary Landfill, Stringfellow, etc.), and non-point source related perchlorate contamination appears to have resulted from natural and artificial sources. Arsenic at levels above the water quality standard appears to be limited to the deeper aquifer zone near the City of Chino Hills. The principal groundwater quality issues facing the District involve nitrate dibromochloropropane, total dissolved solids, and perchlorate. Nitrates Areas of the basin with significant irrigated land use or dairy waste disposal histories overlie groundwater with elevated nitrate concentrations. The primary areas of nitrate degradation are the areas formerly or currently overlain by citrus in the northern parts of management zones (MZs) 1, 2 and 3, and dairy areas in the southern parts of MZs 1, 2 and 3 and all of MZ 5. Nitrate in drinking water at levels above 10 ppm can interfere with the capacity of the infant s blood to carry oxygen, causing shortness of breath and blueness of the skin. High nitrate levels may also affect the ability of the blood to carry oxygen in other individuals, such as pregnant women and those with certain specific enzyme deficiencies. In 2015, average nitrate concentration in the District wells was 10.7 ppm, while the concentrations ranged from 2.9 to 18.7 ppm. The State Board requires the District to provide a finished blended product that has a nitrate (N) MCL of no more than 8 ppm, or 80 percent of the MCL of 10 ppm. Water from several District wells with higher levels of nitrates is combined with water from other wells with lower levels or with imported water to create a blended supply that is below the MCL. One of the District s wells is equipped with an ion exchange treatment facility that removes salts, in particular nitrates, from the pumped groundwater. The District's Aquifer Storage and Recovery (ASR) Program, which consists of recharging the groundwater basin through direct injection of treated imported water and subsequent extraction during summer months and dry years, is expected to enhance water quality over time. ASR wells inject higher quality water into an aquifer of lesser quality; the wells operate to create a zone or bubble of better quality water to be recovered at a later time. Four ASR wells are now operational. Public Review Draft 5-5 May 2016

74 Section 5 Monte Vista Water District Dibromochloropropane Dibromochloropropane (DBCP), an organic chemical, is a banned nematocide (pesticide) that remains in the soils due to run-off or leaching from former use on soybeans, cotton, vineyards, tomatoes, and tree fruit. In 1977, 831,000 pounds of DBCP was used in California, mainly on grapes and tomatoes. In 1979, all registrations of end use products were canceled except for use as soil fumigant for pineapple horticulture in Hawaii. The use was completely canceled in Some people who drink water containing DBCP in excess of the MCL of million gallons per liter (mg/l) or 200 parts per trillion (ppt) over many years may experience reproductive difficulties and may have an increased risk of developing cancer. In 2015, average DBCP concentration in the District wells was 0.06 ppt, while the concentrations ranged from non-detect to 0.23 ppt. The State Board requires the District to blend the water so that the concentration is below 0.16 ppt, or 80 percent of the MCL. Total Dissolved Solids Total Dissolved Solids (TDS) concentrations in the northeast part of the basin range from about 170 to about 300 mg/l, with typical concentrations in the mid- to low 200s. TDS concentrations in excess of 200 mg/l indicate degradation from overlying land use. With few exceptions, areas with significant irrigated land use or dairy waste disposal histories overlie groundwater with elevated TDS concentrations. Most of these degraded areas are located south of the Interstate 10 Freeway. The impact of agriculture on TDS in groundwater primarily is caused by fertilizer use on crops, consumptive use, and dairy waste disposal. TDS concentrations in groundwater have increased slightly or remained relatively constant in northern parts of the MZs 1, 2, and 3. TDS concentrations are significantly higher in the southern parts of these zones and in all of MZ 5, where they typically exceed the 500 mg/l recommended secondary MCL and frequently exceed the upper limit secondary MCL of 1,000 mg/l. In 2015, the average TDS concentration in District wells was 250 mg/l. Perchlorate The State Board has indicated that perchlorate in groundwater in California likely reflects its use in the aerospace industry as a solid rocket propellant (in the form of ammonium perchlorate). Perchlorate is a regulated drinking water contaminant in California, with an MCL of 6 ppb. Perchlorate is believed to inhibit the thyroid s ability to process iodide. Normal body metabolism requires thyroid hormones, as do normal prenatal and postnatal development and growth. In 2015, average perchlorate concentration in the District wells was 1.9 ppb, while the concentrations ranged from non-detect to 6.6 ppb. The State Board requires the District to blend the water so that the concentrations are below the MCL of 6 ppb. May Public Review Draft

75 Section Water Facilities Authority Water Quality The District receives imported water through IEUA from MWD, which receives raw water from northern California through the SWP. The SWP water is delivered to the WFA Agua de Lejos Water Treatment Plant through the MWD Rialto Reach of the Foothill Feeder. The WFA receives and treats SWP raw water. The quality of water from the WFA is generally and consistently quite good, although it can vary depending on hydrologic conditions in both northern and southern California. State Water Project Water Quality The key water quality issues on the SWP are disinfection byproduct precursors, in particular total organic carbon and bromide. MWD is working to protect the water quality of this source, but it has needed to upgrade its water treatment plants to deal adequately with disinfection byproducts. Disinfection byproducts result from total organic carbon and bromide in the source water reacting with disinfectants at the water treatment plant, and they may place some near term restrictions on MWD s ability to use SWP water. MWD expects these treatment restrictions to be overcome through the addition of ozone disinfection at its treatment plants. Arsenic is also of concern in some groundwater storage programs. Groundwater inflows into the California Aqueduct are managed to comply with regulations and protect downstream water quality while meeting supply targets. Additionally, nutrient levels are significantly higher in the SWP system than within the Colorado River, leading to the potential for algal related concerns that can affect water management strategies. MWD is engaged in efforts to protect the quality of SWP water from potential increases in nutrient loading from wastewater treatment plants. Also, as in the Colorado River watershed, MWD is active in studies on the occurrence, sources, and fate and transport of constituents of emerging concern San Antonio Water Company Water Quality Surface water from local sources that originate in the San Antonio Canyon, Cucamonga Canyon, Day Creek, Deer Creek, Lytle Creek and several other smaller surface streams is generally of high quality, as these creeks are fed by snowmelt and other precipitation in the San Gabriel Mountains. Nevertheless, surface water sources are treated prior to introduction to the potable water supply in order to insure bacteriological quality and compliance with state and federal drinking water quality standards Recycled Water Quality The State Water Resources Control Board has established regulations and guidelines for the use of recycled water under the California Code of Regulations, Title 22. In addition, IEUA sets requirements on recycled water retailers, including the District, that are incorporated in its agreements with retailers and in IEUA Ordinance No. 69, which regulates the availability and use of recycled water. Public Review Draft 5-7 May 2016

76 Section 5 Monte Vista Water District All of IEUA water recycling treatment plants produce recycled water suitable for full body contact recreation and generally meet the more stringent aquatic habitat criteria. Due to salinity management and the exclusive use of the SWP supply for imported water, TDS concentrations in recycled water remain relatively low for recycled water (typically 500 mg/l). Since recycled water is regulated and monitored carefully, water quality is expected to remain high Impact on Water Management Strategies and Supply Reliability While the Chino Groundwater Basin water quality is very good, the District will continue with its blending program for groundwater high in nitrates. Imported water that is treated and delivered through the WFA is consistently of good quality. MWD has identified those water quality issues that are of concern and has implemented necessary water management strategies to minimize the impact on water supplies. SAWCo water is consistently of high quality, as is IEUA s recycled water supply. If water quality does impact the water supply to the District in the future, the District will continue to implement its Water Master Plan and Capital Improvement Program, which provides for system redundancy and supply. For example, if groundwater becomes unusable due to water quality concerns, more imported water will be required. If imported water becomes limited due to diminished water quality, then more treatment is necessary, and more groundwater may be used. 5.3 CLIMATIC IMPACTS ON RELIABILITY The reliability of Chino Basin s groundwater supply is based on long-term hydrology due to its ability to store groundwater, and therefore it is not directly impacted by single year or multi-year drought events. In contrast, San Antonio Water Company s local surface water supplies can be impacted by short-term drought events, as is currently being experienced (see Section 4.4). The climate of northern California can impact the reliability of the District s imported surface water supply; however, MWD has mitigated these impacts through supply and storage development. 23 Finally, recycled water is considered drought proof because it originates from the wastewater resulting from indoor uses which are not impacted by changes in the climate. Table 5-1 summarizes the projected supply reliability impacts of single and multiple dryyear scenarios for each of the District s water supply sources. The historical bases for the supply reliability data is presented in Table MWD 2015 UWMP (Draft March 2016). May Public Review Draft

77 Section 5 Table 5-1: Supply Reliability as Percentage of Normal Water Year Supply Supply Source Normal Year Single Dry Year Multiple Dry Years Year 1 Year 2 Year 3 Chino Groundwater Basin 100% 100% 100% 100% 100% Water Facilities Authority 100% 100% 100% 100% 100% San Antonio Water Company 1 100% 82% 82% 70% 70% Recycled Water 100% 100% 100% 100% 100% Aligns with data in DWR Standardized Tables 7-1 R (multiple versions). 1 Based on aggregated per-share allocation percentage reductions (Section 4.4). Table 5-2: Bases of Water Year Data Supply Source Normal Year Single Dry Year Multiple Dry Years Chino Groundwater Basin Water Facilities Authority San Antonio Water Company Aligns with data in DWR Standardized Tables 7-1 R (multiple versions). 1 Western Regional Climate Center, Pomona Fairplex (047050), Monthly Sum of Precipitation, Period of Record: 11/1/1893 to 12/31/2015, accessed May 19, MWD (Draft March 2016), Table 7-1 W. Dry Year Yield Program and Water Supply Allocation Plan On May 1, 2010, MWD implemented a third consecutive year of the Dry Year Yield (DYY) Program (Section 4.2.2), reducing the amount of direct imported water deliveries IEUA retail agencies could purchase by 31,000 AF. Two months later, on July 1, 2010, MWD implemented a Level 2 regional shortage under WSAP (Section 5.1.2). The overlap of these two programs brought significant challenges to IEUA s member agencies and changed in how each retailer used its individual water supply. The District responded by reducing its reliance on imported water from MWD by 40 percent during this period through implementation of water use restrictions, public information campaigns, and prudent management and diversification of its water supply portfolio. Public Review Draft 5-9 May 2016

78 Section 5 Monte Vista Water District As discussed in Section 5.1.2, during normal and dry years MWD will have available supply to meet 100 percent of the District s imported water demands. However, the District can expect to be called upon by MWD to reduce its imported water demand through its DYY Program shift obligation. Simultaneously, the District can expect to have its Tier 1- and Tier 2-priced imported water supplies reduced by percent, depending on the level of implementation of MWD s WSAP. Nevertheless, the overlap of these two programs, while creating challenges, does not in any way impact the reliability of the District s water supplies Demand Modifications during Dry Years Demands on the District s water system can be impacted by changes in climate conditions. This is mostly due to shifts in outdoor water use patterns that result from wet or dry weather conditions. Demands can also be impacted by increased droughtmessaging and calls for conservation, as has been experienced over the past two years during the Governor s emergency conservation regulations. The District s 2005 UWMP established water demand patterns for single and multiple dry year periods based on the most recent five years of production and rainfall data. It found that District customers increased their water use during dry years on average about 5 percent over normal years usage levels. The District s 2010 UWMP, written at the end of a three-year drought, found that customers responded to significantly expanded customer communications and implementation of water waste restrictions with sizeable reductions in water use during these dry years. The District is again writing its UWMP at (hopefully) the end of a three-year drought, and has found customers once again responsive to local, regional, and statewide calls for conservation by reducing their water use to historically low levels (see Section 4). Therefore, the District confirms that the minimal demand increases experienced in the past during dry years will be more than be offset by the increased awareness and responsiveness of District customers to the need to conserve, as experienced in the most recent dry-year period. For conservative planning purposes, the District s 2015 UWMP will not adjust customers demands on its water supply for its dry-year reliability analyses Climate Change Impacts on Water Supply Reliability Water resource managers have long strived to meet their goals of system reliability and environmental protection in the face of many uncertainties, including demographic and economic forecasts and intrinsic weather variability. Now water managers also face a new uncertainty the potential for climate change, which in coming years may significantly affect patterns of water demand and the availability of supplies. However, information about the future impacts of climate change is deeply uncertain and likely to remain so for the foreseeable future. May Public Review Draft

79 Section 5 In March 2016, IEUA published a draft regional Integrated Water Resources Plan (IRP), developed in partnership with its member agencies, which incorporates a comprehensive assessment of regional water supply vulnerabilities to climate change. The IRP identifies general climate change trends for California of increasing temperatures and shifts of precipitation from snow to rain. These trends will impact water supplies in two ways: higher temperatures will cause increased water demands; however, infrastructure to capture rain runoff is limited as water infrastructure in California was designed to capture slow melting snowpack, not rapid stormwater. In addition, droughts are expected to occur more frequently, more intensely, and last longer. A set of 106 climate scenarios for the IEUA region were derived from downscaled general circulation model results used for the Intergovernmental Panel on Climate Change Assessment Reports 3 & 5. These data suggest that regional temperatures would likely increase between degrees Fahrenheit by Precipitation was highly variable and showed no clear trend across the scenarios. Using this information, the IRP stress tested existing and potential regional water supplies and used the resulting analysis to identify future regional water supply needs and opportunities. It should be noted that the IRP s analysis is regional and does not apply to individual member agencies such as the District. As stated earlier, the District s past investments in a diverse water supply portfolio provides it with a very reliable water supply. In the coming year, IEUA plans to conduct a Phase 2 IRP analysis which disaggregates member agencies water demands and future supply needs due to climate change and other factors. 5.4 RELIABILITY ANALYSES NORMAL, SINGLE, MULTIPLE DRY YEARS The following tables compare the District s current and projected water supplies and demands in normal, single dry-year and multiple dry-year scenarios for the District. Projections presented in Table 5-3 through Table 5-5 indicate the District can expect its available supplies to significantly exceed anticipated demands over the 25-year planning period. As a result of these surplus supplies, the District should not experience any problems in meetings its demands during normal, single, or multiple dry-year scenarios during the next 25 years. Public Review Draft 5-11 May 2016

80 Section 5 Monte Vista Water District Table 5-3: Supply and Demand Comparison Normal Year (AFY) Chino Groundwater Basin 29,841 29,841 29,841 29,841 29,841 Water Facilities Authority 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company Recycled Water 1, ,019 1,069 1,069 Total Supply 1 51,790 51,749 51,778 51,828 51,828 Total Demand 2 35,200 35,396 35,730 36,081 36,364 Difference 16,590 16,353 16,048 15,748 15,464 Aligns with data in DWR Standardized Tables 7-2 R and 7-2 W. 1 Table 4-1: Total available water supply capacity. 2 Table 3-2. Table 5-4: Supply and Demand Comparison Single Dry Year (AFY) Chino Groundwater Basin 29,841 29,841 29,841 29,841 29,841 Water Facilities Authority 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company Recycled Water 1, ,019 1,069 1,069 Total Supply 1 51,646 51,605 51,634 51,684 51,684 Total Demand 2 35,200 35,396 35,730 36,081 36,364 Difference 16,446 16,209 15,904 15,604 15,320 Aligns with data in DWR Standardized Tables 7-3 R and 7-3 W. 1 Total available water supply capacity (Table 4-1) x single dry-year adjustment (Table 5-1) 2 Table 3-2. May Public Review Draft

81 Section 5 Year 1 Year 2 Year 3 Table 5-5: Supply and Demand Comparison Multiple Dry Years (AFY) Chino Groundwater Basin 29,841 29,841 29,841 29,841 29,841 Water Facilities Authority 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company Recycled Water 1, ,019 1,069 1,069 Total Supply 1 51,646 51,605 51,634 51,684 51,684 Total Demand 2 35,200 35,396 35,730 36,081 36,364 Difference 16,446 16,209 15,904 15,604 15,320 Chino Groundwater Basin 29,841 29,841 29,841 29,841 29,841 Water Facilities Authority 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company Recycled Water 1, ,019 1,069 1,069 Total Supply 1 51,547 51,507 51,536 51,586 51,586 Total Demand 2 35,200 35,396 35,730 36,081 36,364 Difference 16,347 16,111 15,806 15,505 15,221 Chino Groundwater Basin 29,841 29,841 29,841 29,841 29,841 Water Facilities Authority 21,776 21,776 21,776 21,776 21,776 San Antonio Water Company Recycled Water 1, ,019 1,069 1,069 Total Supply 1 51,547 51,507 51,536 51,586 51,586 Total Demand 2 35,200 35,396 35,730 36,081 36,364 Difference 16,347 16,111 15,806 15,505 15,221 Aligns with data in DWR Standardized Tables 7-4 R and 7-4 W. 1 Total available water supply capacity (Table 4-1) x multiple dry-year adjustment (Table 5-1) 2 Table 3-2. Public Review Draft 5-13 May 2016

82 Section 6 SECTION 6 WATER DEMAND MANAGEMENT Monte Vista Water District is a regional leader in developing and implementing proactive demand management programs that protect existing water resources so that adequate water supplies will be available for sustainable future growth. Investments in reliable local resources have been critical to maintaining current and future water supplies. Equally critical is the promotion of water use efficiency as an integral component of current and future water strategy for the service area. In 1991, the District became one of the first water agencies to sign the California Urban Water Conservation Council s Memorandum of Understanding Regarding Urban Water Conservation, accepting its obligation to implement a prescribed set of urban water conservation Best Management Practices (BMPs). The BMPs, which are equivalent to the demand management measures set forth in the Urban Water Management Planning Act, have been a key element in the District s conservation program strategy. The District has maintained its compliance with the BMPs, as demonstrated in its coverage reports included as Appendix M of this Plan. In addition to the BMPs, the District is required to comply with the Water Conservation Act of 2009 s requirements to set and then to meet its urban water use reduction targets of 188 GPCD by 2015 and 167 GPCD by Section of this Plan describes how these targets are determined. As many of the District s conservation activities are implemented on a regional basis, the District is an active participant in a regional alliance coordinated by IEUA to achieve regional compliance with the Water Conservation Act of Both on an individual and regional basis, the District is currently exceeding its urban water use reduction targets. In the following section, the District will describe its past, current, and future conservation efforts and demonstrate how the District plans to assist its customers in maintaining and enhancing their current water use efficiency practices. 6.1 LEGISLATIVE AND REGULATORY REQUIREMENTS The strategies, programs, and regulations included in this section are designed to meet the following as well as any future statewide compliance requirements: CUWCC s BMPs Assembly Bill (AB) 1420 Implementation of Demand Management Measures SB X7-7 The Water Conservation Act of 2009, which requires urban water suppliers to achieve a 20 percent per capita reduction in urban water use by 2020 Public Review Draft 6-1 May 2016

83 Section 6 Monte Vista Water District California Urban Water Conservation Council The California Urban Water Conservation Council (CUWCC) is a voluntary state-wide organization of water agencies, public interest organizations, and private entities tasked with overseeing the BMP reporting process, implementing and revising the Memorandum of Understanding Regarding Urban Water Conservation (MOU), and generally promoting urban water use efficiency in California. Membership in CUWCC consists of three groups: Group 1: Urban Water Suppliers; Group 2: Public Advocacy Organizations; and Group 3: Other Interested Parties. Only Groups 1 and 2 have voting rights to alter MOU provisions, and both groups must agree to any alterations. The MOU was last amended in June The District became a Group 1 member of CUWCC in 1991, when it was one of 120 water agencies and environmental groups to become charter signatories to the MOU. There are currently over 400 CUWCC members. 24 In 2010, the District amended its signatory status to become a wholesale as well as a retail water agency signatory to the MOU. Best Management Practices As an MOU signatory, the District is obligated to make good faith efforts to meet coverage requirements for the BMPs for efficient urban water usage as set forth in the MOU. Every two years, water agencies that are signatories to the MOU are required to fill out and submit online BMP reports on conservation program activities as they relate to individual BMPs. The District submitted its latest reports for FYE 2013 and FYE 2014 in December A BMP is defined by the MOU as a policy, program, practice, rule, regulation or ordinance or the use of devices, equipment or facilities which meets either of the following criteria: An established and generally accepted practice among water suppliers that results in more efficient use or conservation of water; or, A practice for which sufficient data are available from existing water conservation projects to indicate that significant conservation or conservation-related benefits can be achieved; that the practice is technically and economically reasonable and not environmentally or socially unacceptable; and that the practice is not otherwise unreasonable for most water suppliers to carry out. The BMPs listed below are incorporated into the MOU: 24 CUWCC website, May Public Review Draft

84 Section 6 BMP 1: Utility Operations o BMP 1.1: Conservation Coordinator o BMP 1.2: Water Waste Prevention o BMP 1.3: Wholesale Agency Assistance Programs o BMP 1.4: System Water Audits, Leak Detection and Repair o BMP 1.5: Metering with Commodity Rates For All New Connections and Retrofit of Existing Connections BMP 2: Education Programs o BMP 2.1: Public Information Programs o BMP 2.2: School Education BMP 3: Residential Programs o BMP 3.1: Residential Landscape Water Survey Program o BMP 3.2: Residential Leak Assistance Program o BMP 3.3: High Efficiency Clothes Washers o BMP 3.4: WaterSense Specification Toilets BMP 4: Commercial, Institutional, Industrial BMP 5: Landscape BMPs 1 and 2 are considered Foundational because they are essential water conservation activities and are adopted for implementation by all signatories to the MOU as ongoing practices with no time limits. The remaining BMPs are considered Programmatic and provide minimal levels of activity in order to achieve coverage. Coverage requirements for the current BMPs are meant to achieve conservation-related activity and water savings goals over a ten-year period ending in Compliance with the Programmatic BMPs can be accomplished in one of three ways: 1. Accomplishing the specific BMP measures; 2. Accomplish a set of alternative measures which achieves equal or greater water savings, referred to in the MOU as the Flex Track Menu; or 3. Accomplish a GPCD water savings goal. Public Review Draft 6-3 May 2016

85 Section 6 Monte Vista Water District The latter option is similar but not identical to the GPCD target required in the Water Conservation Act of A water agency may also achieve coverage for an individual BMP by doing one of the following: File for an exemption from the BMP based on good faith efforts, lack of costeffectiveness, inadequate funds, or lack of legal authority to implement the BMP; or, Provide evidence that the agency has implemented an at least as effective as conservation activity that would provide equal water savings to implementing the BMP. Retail agencies are required to achieve coverage for all the BMPs except BMP 1.3. Wholesale agencies are required to achieve coverage for all the Foundational BMPs except BMPs 1.2 and 1.5. Coverage reports are issued by CUWCC upon submittal of annual reports by its Group 1 members. The District s coverage reports for 2013 and 2014 are incorporated as Appendix M Assembly Bill 1420 Under AB 1420 (2007), effective January 1, 2009, the terms of, and eligibility for, a water management grant or loan made to an urban water supplier and awarded or administered by DWR and the State Board shall be conditioned on the implementation of the Demand Management Measures (DMMs) incorporated into the Urban Water Management Planning Act. Under State Law, achieving compliance under the CUWCC s BMPs is equivalent to implementing the DMMs. DWR must consider whether an agency is implementing or has scheduled to implement the DMM activities that an agency has identified in its UWMP in evaluating applications for grants and loans financed by specified bond funds. This requirement sunsets on July 1, The Water Conservation Act of 2009 Enacted in November 2009 as part of an historic package of bills concerning California water management, SBX 7-7 establishes a statewide urban per capita water use reduction of 20 percent by This initiative applies to all urban retail water suppliers serving a minimum of 3,000 customers or supplying 3,000 AFY or more. Urban retail water suppliers were required to establish a baseline GPCD and report it in their 2010 UWMPs by July 1, May Public Review Draft

86 Section 6 Beginning in 2010, an urban retail water supplier must establish a baseline and continue to implement required DMMs under AB On July 1, 2016, compliance with SBX 7-7 will replace compliance with AB 1420 as a condition eligibility of all state water management grants and loans. Awarding of state grants and loans will then be contingent on meeting or exceeding the 20 percent water use reduction target by An interim reduction target of 10 percent must also be met by December 31, 2015, as certified in each urban agency s 2015 UWMP. For baseline criteria and establishment of the District compliance s with this legislation, see Section 3.6.1; for District compliance with its 2015 Interim Urban Water Use Target, see Section Assembly Bill 1881 AB 1881 (Laird 2006), the Water Conservation in Landscaping Act, requires statewide land use agencies to update and adopt local landscaping ordinances by January 1, The adopted landscaping ordinances must be at least as effective as the State Model Water Efficient Landscape Ordinance (MWELO) developed by DWR. In 2015, Governor Brown issued an executive order (B-29-15) requiring significant changes to the MWELO. Key elements in the updated MWELO include: applying a water budget approach to large new and redeveloped landscapes which require a permit, reducing the ETo adjustment factor used in the calculation of a landscape s budget, increasing the public s awareness of the importance of water use efficiency in landscaping, requiring smart (e.g., weather-based) irrigation controllers, and adopting and enforcing statewide prohibitions on overspray and runoff. The District is not a land use agency and is not required to implement AB However, the District was directly engaged with its local land use agencies in the process of developing a model landscape ordinance for the Chino Basin region through the Inland Empire Landscape Alliance, convened by IEUA. The District also assisted the City of Montclair in adapting the regional ordinance for adoption into the City Code. The District will continue to work with the City and its other land use agencies in updating and implementing their ordinances for applicable new and rehabilitated developments. 6.2 DEMAND MANAGEMENT MEASURE IMPLEMENTATION As mentioned earlier, the District has maintained its compliance with the BMPs, as demonstrated in its most recent coverage reports included as Appendix M of this Plan. According to Section 10631(i) of the Urban Water Management Planning Act, submission of CUWCC BMP coverage reports meets the Act s requirement to describe the water supplier s DMM implementation process. Public Review Draft 6-5 May 2016

87 Section 6 Monte Vista Water District The District has chosen the GPCD compliance option for achieving all of the Programmatic BMP water savings goals. The method of determining GPCD compliance under the MOU differs slightly from that of the Water Conservation Act of 2009, but not enough to be consequential to the District s plans to maintain compliance under both requirements. 6.3 DEMAND MANAGEMENT PLANNING The following is a general description of the District s demand management strategies to maintain compliance with the Water Conservation Act of 2009 and with the DMMs/BMPs under the GPCD compliance option Regional Conservation Programs A significant portion of the District s water conservation efforts are conducted through regional programs. The District, through IEUA, has access to MWD s extensive array of conservation programs. In addition, the District is a member of two major regional conservation groups: IEUA s Regional Conservation Workgroup, which facilitates and supplements MWD programs in the IEUA service area; and the Water Education Water Awareness Committee (WEWAC), which manages a number of regional water education and public information programs. The District also has a strong working relationship with CBWCD, which provides conservation and education programs for District customers. MWD s Regional Conservation Programs MWD currently provides financial support for local water projects and water conservation projects implemented by its member agencies that contribute to an increase in the reliable regional water supplies available to the region. The District participates in many MWD regional programs through its MWD member agency, IEUA, as described below. IEUA s Regional Conservation Workgroup IEUA coordinates a comprehensive regional conservation program through its Regional Conservation Workgroup. The Workgroup, comprised of representatives from each of IEUA s eight member retail agencies, advises IEUA on the implementation of conservation and education programs funded through a per-af surcharge on imported water purchased by the member agencies from IEUA. The program also receives funds through retail meter revenues collected by IEUA. These funds are used to leverage additional funding from MWD, DWR, and the U.S. Bureau of Reclamation, resulting in an annual conservation budget which is consistently over $1 million. 25 The District actively works through the Regional Conservation Workgroup to advocate for conservation and education programs that will be of direct benefit to District customers. 25 In FYE 2017 IEUA will change this funding structure to a fixed member agency meter equivalent unit charge. May Public Review Draft

88 Section 6 From FYE 2011 through 2015, the IEUA region has achieved 3,630 AF in annual savings and 34,610 AF in lifetime savings, and the District has achieved 169 AF in annual savings and 1,713 AF in lifetime savings from IEUA s regional conservation programs over the same time period. 26 The programs are described below. For District device/rebate numbers and savings by program, please see Appendix N. MWD s SoCal Water$mart Rebate Program: See above. The Workgroup often supplements MWD s rebate amounts with local funds to increase regional participation in the program. Residential Landscape Transformation Program: Provides contractor services to replace 500-1,000 square feet of turf with water efficient landscaping. Participants provided nominal co-pay of $0.30 per square foot. Regional Residential Large Landscape Retrofit Program: Provides outdoor irrigation evaluations and retrofits of landscape devices for ¼-acre and larger sites. FreeSprinklerNozzles.com Voucher Program: Provides voucher for free high efficiency irrigation spray nozzles through a web-based portal. Turf Rebate: In FYE 2015, MWD committed an unprecedented $340 million to turf removal incentives for FYE 2015 and In addition, IEUA provides the following additional agency support, conservation, and education programs to the District and its customers through the Workgroup process: Regional Landscape Training Workshops: Residential workshops on the basics of efficient irrigation systems, the benefits of properly watering and fertilizing landscaping, landscape design techniques and plant identification. Water Saving Garden Friendly: Public-private partnership with Home Depot to promote water efficient plants through decals, plant sales, and workshops. Garden-In-Every School Program: Installs water wise gardens in elementary schools. National Theatre for Children: Live theatre, student curriculum and teacher guides for elementary schools. Shows That Teach: Educational and motivational school assembly programs that focus on water education. 26 IEUA Annual Water Use Efficiency Programs Report, FY Public Review Draft 6-7 May 2016

89 Section 6 Monte Vista Water District Water Discovery Field Trip Program; Free school field trips to Chino Creek Wetlands and Educational Park to promote the public understanding of the value of natural treatment wetlands, the creation of habitat for endangered/sensitive species and environmental stewardship. Water Conservation Outreach Campaign: Conservation and drought outreach messaging via monthly ads in local newspaper and movie theaters. BMP Support Grant: An annual grant of $2,000 to each member agency for a BMP-related program or project. Regional Water and Landscape Conservation Fair: Held annually in October, the Fair is a community awareness partnering event with CBWCD, IEUA, and its member agencies created to educate the public on the importance of using water efficiently. IEUA has just developed its third Regional Water Use Efficiency Business Plan to guide its water use efficiency programs through The plan focuses on assisting retail water agencies in developing budget-based tiered rate structures to incentivize efficient water use. The District developed its budget-based tiered rate structure in 2010 (see Section 6.3.2). Additional identified water use efficiency programs include: Customer Engagement Software and Data Analytics: Tools for water agencies to identify customers with excess water usage and communicate with customers on how their usage compares against accepted water use efficiency standards. Also offers customers the ability to track usage against a budget through webbased and mobile interfaces. Regional Residential Small Landscape Retrofit Program: Provides outdoor irrigation evaluations and retrofits of landscape devices for 500-square-foot and larger sites. High Efficiency Nozzle Direct Installations: Retrofitting pop-up spray heads with high efficiency nozzles. District began program independently in 2015 (see Section 6.3.2). Water Education Water Awareness Committee The Water Education Water Awareness Committee (WEWAC) is a voluntary consortium of 14 local water agencies formed to promote the efficient use of water and to increase public awareness of the importance of water in southern California. WEWAC was founded originally as the West End Water Awareness Committee by the District and other local water agencies in the west end of San Bernardino County in 1986 during a severe drought, and it has since grown to include agencies in Los Angeles County (hence the change in the organization s name). May Public Review Draft

90 Section 6 WEWAC implements the following annual education and public outreach programs: EduGrant Program Provides $600 grants to local educators for water-related classroom activities. District staff help organize the program and select grant recipients. Project WET Workshops Free workshop to introduce local educators to the Project WET ( Water Education for Teachers ) Curriculum & Activity Guide, a collection of field-tested, innovative, interdisciplinary, water-related lessons and activities aligned with the California Content Standards. The District pays substitute costs for the first five teachers from schools within its service area who register. District staff receive Project WET facilitator training and help organize and run the workshops. Water Awareness Broadcast Media and Digital Art Contest Competition among local junior high and high school students to produce a broadcast media or digital art public communication focused on water conservation and awareness. Water Scholar Program provides financial support to high school seniors planning to attend a two- or four year college in the following school year. WEWAC Website The WEWAC website, provides education resources in an attractive and engaging way. Includes signup for the monthly Next Wave newsletter, a water quiz, links to other online resources, and information on WEWAC education programs. Quakes Messaging Messages on how to use water efficiently posted on the video board during Rancho Cucamonga Quakes minor league baseball games. As noted above, District staff are actively engaged in assisting in the implementation of WEWAC programs. Chino Basin Water Conservation District CBWCD was established in 1949 to protect and replenish the Chino Groundwater Basin with rainfall and storm water runoff from the San Gabriel Mountains. CBWCD uses an extensive system of percolation ponds and spreading grounds to augment the natural capacity of the region to capture runoff for the recharge of the groundwater basin. CBWCD also promotes water conservation through public education programs, water conservation services, and a newly completed Water Conservation Center all provided free of charge to residents within its service area. Finally, CBWCD provides funding through its Public Sector Program for onsite retrofits of parks and school yards within its service area to use recycled water. Public Review Draft 6-9 May 2016

91 Section 6 Monte Vista Water District The District s retail service area lies fully within CBWCD s service area, providing District customers with full access to all CBWCD conservation, education, and funding programs and resources. CBWCD and the District work closely together to promote these programs and communicate their availability to District customers. The following are brief descriptions of CBWCD s conservation, education, and funding programs and resources which provide direct benefit to the District s conservation programs: Landscape Evaluation and Audit Program (LEAP) Certified irrigation system evaluators visit customers properties, conduct a landscape irrigation evaluation, and provide a comprehensive evaluation report. Partially funded through IEUA. Landscape Design Room Resources to assist in retrofitting to water efficient landscaping. Appointments for a free consultation with conservation specialists. Gardening Workshops Free gardening workshops for both professionals and homeowners. CBWCD contracts with IEUA to hold workshops exclusively for its member agencies, upon request. Qualified Water Efficient Landscaper (QWEL) Training Professional bilingual training on water efficient principles for irrigation systems and landscape design. QWEL is an EPA WaterSense labeled certification. Drought-Tolerant Demonstration Garden Showcases a variety of water efficient plants growing in their native environment. Free, open 7 days a week (excluding holidays), guided and unguided tours available. Earth Day Festival Annual event for 1,000-1,200 fifth-grade students from local schools. District provides sponsorship funding, hosts water education display booths, and provides educational materials to teachers and students. Education Grants Scholarships of up to $5,000 to local students focusing on water related majors. Poster-Art Contest Annual themed contest for K-6 th grade and 7 th -12 th grade categories. Cash prizes. Recycled Water Conversion Incentive Program Funding for conversion of city parks and school yards to recycled water. Mulch Giveaways Free mulch, self-help, available twice a week. May Public Review Draft

92 Section 6 Regional Compliance with Water Conservation Act of 2009 Many of the District s conservation activities are implemented on a regional basis through IEUA s Regional Conservation Workgroup. The Water Conservation Act of 2009 provides a regional compliance option, where a group of agencies that regionally coordinate conservation efforts can set collective urban water use targets and determine regional methods to achieve said targets through a Regional Alliance. IEUA s eight retail member agencies formed a Regional Alliance, together with IEUA, in All member agencies within IEUA s service area have agreed to the formation of a Regional Alliance, and will continue to cooperatively participate in developing programs and meeting regional and local water conservation goals. The District is an active participant in regional conservation programs and supports the Regional Alliance s effort to exceed its collective water use reduction goal of 20 percent by 2020 through regional conservation programs and aggressive recycled water development, as described in IEUA s 2015 UWMP District Conservation Programs In the late 1980s, faced with a significant drought, the District provided regional leadership in helping to form WEWAC to communicate to the region s water users the need to conserve limited water resources. In 1996, the District initiated its comprehensive conservation incentive programs with free toilet distributions, in partnership with IEUA. Since then, the District has generated over 570 AFY in water savings, or 6,890 AF over the lifetime of the incentivized high efficiency devices. This represents over 6% of the District s current retail water demand. The District has also developed ongoing and effective public information and outreach campaigns. In addition to the District s leadership, active engagement, and full utilization of regional conservation programs to benefit its customers, the District has also developed Districtspecific programs to address the particular needs and generate additional water savings and value for its customers. Budget-Based Tiered Rate Structure In August 2010, the District implemented a budget-based tiered rate structure for its single-family residential customers. A budget rate structure relies on a calculation of the indoor and outdoor water needs for each individual customer per billing period which, added together, form the customer s budget. Customers who stay within their budget will pay lower rates than those who exceed their budget, thus incentivizing efficient use. Public Review Draft 6-11 May 2016

93 Section 6 Monte Vista Water District The District has revised its budget allocation criteria twice, in 2012 and most recently in 2016, to better align with state efficiency standards. Table 6-1 shows the current default values and formulas that the District uses to determine each customer s water budget. These default values represent a sufficient allocation of water to cover efficient indoor and outdoor water needs. If, due to special circumstances, individual customers require greater amounts of water to meet their indoor or outdoor needs, they may seek a budget variance. In 2016, the District expanded its budget rate structure to include customers with dedicated irrigation meters. Table 6-1: Budget-Based Tiered Rate Structure Assumptions 2016 Residential Tier Residential Formulas Tier 1 4 persons * 55 gallons * 30.4 days / 748 gallons Tier 2 Lot Size Residential Structure Footprint Hardscape (25% Remaining Lot) * 38 inches Tier 3 50% of Tier % of Tier 2 Tier 4 All usage above Tier 3 Irrigation Tier Irrigation Formulas Tier 1 Lot/Irrigated Size * 45 inches Tier 2 All usage above Tier 1 Budget-based rate structures are widely considered to be a very effective way to incentivize water customers to use water efficiently. A recent University of California Riverside study of one budget rate structure concluded that it achieved a 15 percent water savings. 27 Additionally, the District dedicates revenues received through its highest penalty tier for conservation program expenses. Mandatory Year-Round Water Use Efficiency Best Practices In May 2010, the District Board of Directors adopted Ordinance 33 (Appendix O), establishing water use efficiency best practices and staged water shortage demand management measures (for more information on these stages, see Section 7.2 below). Under Ordinance 33, District customers are required to implement the following water use efficiency best practices on a permanent, year-round basis: Set automatic irrigation timers to water only before 8:00 a.m. or after 8:00 p.m. and for 15 minutes or less per cycle (exceptions: hand-watering, drip irrigation, weather-based or soil moisture sensing irrigation controllers); No runoff from excessive watering; 27 Kenneth Baerenklau, Kurt Schwabe, and Ariel Dinar, Allocation-Based Water Pricing Promotes Conservation While Keeping User Costs Low. Agricultural and Resource Economics Update 17(6), May Public Review Draft

94 Section 6 No watering during rain; Repair leaks within seven days of discovery; Use shutoff nozzle to wash vehicles, or use commercial wash that recycles; No hosing or washing paved surfaces (except when required for health and safety reasons, and then only with a high-pressure washer); Restaurants provide water service only on request; Hotels provide option for no daily linen service; and, Water recycling systems for conveyer and in-bay automatic vehicle washes, decorative water features, and cooling towers and evaporative cooling systems. Recycled water customers are exempt from these practices, but they must follow the water use requirements under the District s Ordinance 31 (Appendix L) governing recycled water use within the District s service area. The District s enforcement of year-round water use efficiency best practices is dictated by established courtesy notice and enforcement procedures, as well as by water supply conditions and staff availability. If violations are reported by customers or witnessed by District staff, the District provides one or more courtesy notices by door hanger, phone call, or letter, informing the customer about the violation and requesting that it be addressed in a timely manner. If the violation is witnessed again by District staff after at least seven (7) days, the District initiates official notifications by letter. If the customer receives two such notifications and the violation is still not addressed after at least seven (7) days from receipt of the last and final notice, the customer is subject to fines and possible flow restriction on the schedule in Table 6-2. Table 6-2: Best Practice Notifications and Penalties Best Practices First Violation Written Notice Second Violation Final Written Notice Third Violation Fourth Violation $50 Fine $100 Fine Fifth Violation $150 Fine; Flow Restrictor Customers have the right to request in writing a waiver for hardship or special circumstances. A staff review board reviews written waivers and grants or revokes waivers. Review board appeals may be heard by the District Board of Directors. Public Review Draft 6-13 May 2016

95 Section 6 Monte Vista Water District Residential Nozzle Retrofit Program In 2014, the District contracted with ConServ Construction, Inc. to provide customers with a free irrigation survey and nozzle retrofit program. This program, funded through Tier 4 revenues from its budget-based tiered rate structure (see above), targets customers who exceed their budget or otherwise are identified as high users. The program provides a site visit, evaluation of the customer s irrigation system, and installation of high-efficiency spray nozzles, as well as a consultation on the many existing regional and local conservation programs would best meet the customer s needs and help reduce water use to within their budget allocation. Enhanced Conservation Program In response to Governor Brown s declaration of drought emergency and mandatory conservation order, and in conjunction with a declared Significant Water Supply Shortage under Ordinance 33 (see Section 3.1), the District launched an Enhanced Conservation Program to assist customers in achieving immediate and lasting water savings. Transferred $250,000 from reserves into its conservation program budget, the District funded the following enhanced programs: Enhanced rebates for turf removal, high-efficiency toilets, and weather-based irrigation controllers; Enhanced irrigation retrofits to supplement local and regional installations of high-efficiency irrigation technologies; A public sector assistance program that provided matching funds to public sector partners in reducing near-term water use while achieving long-term savings; and Enhanced promotions through additional customer communications and consultant assistance on developing effective promotional strategy and materials. Drought Response Clinics Also in response to the Governor s mandatory conservation actions, the District initiated a series of clinics to assist customers with a variety of options to reduce their water use. Customers who attend the clinics receive one-on-one assistance with conservation programs and attend bilingual gardening mini-classes and demonstration garden tours to learn more about water-efficient plants. Customers were able to sign up for free landscape irrigation evaluations, free sprinkler nozzles, free weather-based irrigation controller installations, and free comprehensive landscape retrofits, depending on their qualifications. Customers were also provided with information on available rebates for toilets and clothes washers, as well as tips on how to change water use habits to avoid waste. May Public Review Draft

96 Section 6 Water Is Life Art Poster Contest The District has conducted an annual Water is Life Art Poster Contest since 2002 for students in Kindergarten through 12 th grade that attend schools located within the District's service area. Winners in several grade categories are selected by District staff and members of the Board of Directors. The winning entries of the District's contest are entered into MWD s regional contest which selects 36 posters to feature in a calendar. Bruce J. Lance, Jr. Water Scholarship In 2013, the District recognized Bruce Lance s 44 years of service as its general counsel by establishing the Bruce J. Lance, Jr. Water Scholarship for Montclair High School graduating seniors who plan to attend college. Two $500 scholarships are awarded annually. Applicants are required to write an essay on the importance of water. Website and Newsletter The District s website, has a special conservation section which features conservation programs and resources, a Watch the Water news section, rotating water savings tips, a form for reporting water wasters, a garden class signup form, and a full listing of programs and resources for teachers and students. Figure 6-1 shows the website section s current front page. The District has also developed an newsletter, the e- Waterline, which delivers information from the website conservation section directly to customer inboxes Potential Customer Sector and Economic Impacts Conservation has multiple benefits, one of which is the value of conservation to the District s ratepayers, in that it saves them from paying higher rates. The District s conservation strategies are equally targeted to all of its customer sectors, and any economic benefits are expected to be borne equally by all customer sectors. That said, conservation can negatively impact the District through decreased revenues. The District protects itself from such impacts through us of a budget-based tiered rate structure (see Section 6.3.2), which matches the District s revenue needs to efficient water use, as well as through the balanced use of the District s diverse water supply portfolio. The District expects a long-term reduction in water demands as customers become more efficient. In the future, the District may be required to reduce demands even further by either state regulatory action or other unforeseen situations, resulting in insufficient revenues to meet projected expenses. In order to protect the District financially in such circumstances, the District recently adopted demand reduction rates as part of its normal rate adoption process in order to ensure financial stability and high quality water service. These rates are set in four stages representing rate adjustments to address a 10 percent, 20 percent, 30 percent, and 40 percent reduction in demand below baseline levels. Implementation of demand reduction rates would require separate action by the Board of Directors before they take effect, and do not apply to recycled water customers. Public Review Draft 6-15 May 2016

97 Section 6 Monte Vista Water District Figure 6-1: District Website Conservation Section May Public Review Draft

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