WATER RESOURCES DIVISION ANNUAL REPORT

Transcription

1 SAN FRANCISCO PUBLIC UTILITIES COMMISSION WATER RESOURCES DIVISION ANNUAL REPORT Fiscal Year

2 Dear Partners, Customers and Stakeholders, Thanks to the collective efforts of the San Francisco Public Utilities Commission (SFPUC) and our customers, we continued to provide 2.7 million people with reliable, high-quality drinking water during the historic California drought was the hottest and driest period in California s history since record keeping began. Between January 2014 and April 2017, we saved a total of 43 billion gallons (or 16%) across our regional system compared to 2013 levels. That is a tremendous accomplishment, and we are grateful to our customers for their commitment to conservation. We could not have achieved these results without years of strategic planning, strong regional partnerships, robust outreach and education campaigns and common sense regulations. Conservation is now a way of life for California. Wet or dry year, there is never enough water to waste. This year we are implementing key projects that diversify our water supply. After more than a decade of planning, our San Francisco Groundwater Supply Project is nearly complete and we have begun blending a small amount of groundwater with our regional supplies. Construction is also underway for our Westside Advanced Treated Recycled Water Project. This project will generate recycled water for irrigation and lake-filling, allowing us to save precious potable supplies for drinking water. Since we had abundant rain and snow over the winter, some of our stakeholders have wondered why we need these projects now. Droughts are inevitable and unpredictable. In addition, climate change, population growth and regulatory changes are potential risks. We cannot take our water for granted. These projects play a critical role in diversifying our water supply portfolio for the future. We are responsible for ensuring the reliability and resiliency of our water supply for today and for future generations. It s our goal and our obligation to prepare now for whatever tomorrow may bring. On behalf of the SFPUC, I am pleased to issue the Water Resources Division Annual Report for Fiscal Year Paula Kehoe, Director of Water Resources

3 Water Resources Division Accomplishments: FY LOCAL WATER PROJECTS WATER CONSERVATION 20 New Non-potable Projects Proposed 3,017 Water-Wise Evaluations 814 Single Family 1,910 Multi-Family 287 Non-Residential 19,176 Devices Distributed 11,733 Aerators 4,851 Showerheads 2,592 Other 6,667 Fixure Rebates & Installations 5,222 Toilets 181 Urinals 1,264 Washers 6 Landscape 4 San Francisco Groundwater Wells Under Construction Outreach & Education Landscape Programs 1 Contract Awarded for Recycled Water Treatment Facility 4,118 Conservation Phone Calls 221 Water Waste Reports 55 Class Presentations 40 Outreach Events 30 Field Trips 26 Rain Barrels 16 Cisterns 13 Graywater Kits 5 Community Garden Grants 4 Large Landscape Grants 1 Graywater Permit Rebate RESULTING IN ESTIMATED LIFETIME WATER SAVINGS Contents 2 Water Portfolio, Customers and Water Use 1 Billion gallons OR Annual water supply for 18,000 San Francisco Homes 4 Local Water Supplies 8 Water Conservation Programs 14 Community Outreach and Education 16 Forward Thinking Water Supply Planning 21 Awards 1

4 Water Portfolio, Customers and Water Use The Hetch Hetchy Regional Water System is a public asset that delivers high-quality drinking water to 2.7 million residents and businesses in the Bay Area. The system collects water from the Tuolumne River in the Sierra Nevada and from protected local watersheds in the East Bay and on the Peninsula. The SFPUC delivers water to 27 wholesale customers in Alameda, Santa Clara and San Mateo counties and provides direct retail water service to customers in San Francisco and some customers outside of San Francisco. The Bay Area Water Supply & Conservation Agency (BAWSCA) represents the interests of 26 of the 27 wholesale customers and also coordinates their water conservation, supply and recycling activities. During FY , the SFPUC delivered approximately 181 million gallons per day (mgd) on average to its wholesale and retail customers. Wholesale customers received 116 mgd, San Francisco retail customers received approximately 62 mgd and retail customers outside of San Francisco received 3 mgd. San Francisco retail customers water conservation efforts supported in part by incentives and assistance from the SFPUC have helped San Francisco reduce total water demand over the last two decades despite population growth. In FY , San Francisco retail customers gross per capita use was approximately 72 gallons per day and the residential per capita water use was about 41 gallons per day. While this water use was among the lowest in the State, the SFPUC remains committed to comprehensive water conservation efforts. WATER SERVICE AREA PACIFIC OCEAN SAN FRANCISCO Lake Lloyd Reservoir (Cherry Lake) Lake Eleanor Reservoir Cherry Power Tunnel Harry Tracy Water Treatment Plant San Andreas Reservoir Pilarcitos Reservoir Crystal Springs Reservoir SFO SAN FRANCISCO BAY Pulgas Tunnel HAYWARD Bay Division Pipelines Nos. 1 & 2 & 5 San Antonio Reservoir Coast Range Tunnel Sunol Valley Water Treatment Plant San Joaquin Pipelines Tesla Treatment Facility Foothill Tunnel Holm Powerhouse TUOLUMNE RIVER Priest Reservoir Moccasin Powerhouse and Reservoir Don Pedro Reservoir O'Shaughnessy Dam Hetch Hetchy Reservoir Kirkwood Powerhouse YOSEMITE NATIONAL PARK HALF MOON BAY Pulgas Water Temple PALO ALTO Calaveras Dam & Reservoir STANISLAUS NATIONAL FOREST SAN JOSE 2 Bay Division Pipelines Nos. 3 & 4

5 FY AVERAGE RESIDENTIAL WATER USE PER PERSON / PER DAY CALIFORNIA 86 gallons SAN FRANCISCO 41 gallons 874,228 San Francisco Population 36 MILLION gallons per day Water Delivered to San Francisco Residential Customers FY REGIONAL WATER SYSTEM DELIVERIES AND SAN FRANCISCO RETAIL WATER USE REGIONAL WATER SYSTEM DELIVERIES SAN FRANCISCO RETAIL WATER USE Wholesale Customers a : 116 mgd Retail Customers in San Francisco: 62 mgd Retail Customers Outside of San Francisco b : 3 mgd Commercial/Industrial: 17 mgd Irrigation c : 1 mgd Municipal: 2 mgd Other System Uses d : 5 mgd Single Family Residential: 14 mgd Multi-Family Residential: 22 mgd a b c d Deliveries exclude 5.3 mgd delivered in lieu of groundwater to customers participating in the Regional Groundwater Storage and Recovery Project. These customers are also referred to as suburban retail customers. These data are from dedicated irrigation accounts only, and do not include irrigation use from water accounts that jointly serve both indoor and outdoor demands. Other system uses include pipe flushing, firefighting, street cleaning and water system losses from leaks and main breaks. 3

6 Local Water Supplies For the past decade, the SFPUC has been implementing a Local Water Program. This Program provides conservation assistance, promotes recycled water to meet the City s most significant irrigation needs, mandates non-potable supplies for toilet flushing in new developments and develops local groundwater to enhance the City s drinking water supply sustainably now and into the future. SAN FRANCISCO GROUNDWATER SUPPLY PROJECT The San Francisco Groundwater Supply Project is a forward-looking project that allows us to supplement our drinking water sources by blending a small amount of local, high-quality groundwater with water from the Regional Water System. The SFPUC is completing construction on four of the six wells planned to extract water from the Westside Groundwater Basin, as well as over five miles of pipelines to distribute the groundwater to local reservoirs for blending. Two groundwater wells will also serve as emergency drinking water supplies following an earthquake or other natural disaster, and will include a distribution system to fill emergency water tankers. The project is pumping groundwater from wells that are 270 to 460 feet deep. The pumped groundwater is treated and then blended with the Regional Water System supplies in the Sunset and Sutro Reservoirs before entering the distribution system. Water from these reservoirs is distributed to over half the City, based on the elevations and pressure zones of the reservoirs. The SFPUC will be adding an average of up to 1 mgd of groundwater to our Regional Water System supply that s about 3% of the volume in the reservoirs. Over the next several years, we will incrementally build up to an average of 4 mgd of groundwater in San Francisco, which will represent approximately 13% of the water in the Sunset Reservoir. The project is currently in the start-up phase of implementation, and the individual wells and the blended water at the reservoir outlets are sampled and analyzed regularly. All water served by the SFPUC will continue to meet or surpass all drinking water standards set by the California State Water Resources Control Board, Division of Drinking Water (State Water Board) and the Environmental Protection Agency. For more information about groundwater or to view our water quality reports, visit sfwater.org/sfgroundwater. 4

7 Local Water Supplies Presidio Golf Course, 300 Finley Road, San Francisco RECYCLED WATER PROGRAM Water is too precious of a resource to use just once. Using recycled water for non-drinking purposes such as landscape irrigation, toilet flushing, street cleaning and cooling helps preserve drinking water supplies from the Regional Water System. Recycled water deliveries to Harding Park, Fleming Golf Courses and Sharp Park Golf Course began in 2012 and 2014, respectively. Together, the two projects offset the use of approximately 0.3 mgd to meet irrigation demand. On the west side of San Francisco, the SFPUC plans to use recycled water to save approximately 2 mgd of drinking water that is currently used for non-drinking purposes such as irrigation and lake-fill. The Westside Advanced Treated Recycled Water Project includes construction of a new recycled water treatment facility within the Oceanside Treatment Plant, along with storage reservoirs, pump stations and pipelines to deliver recycled water. The water produced by this project will be used primarily to irrigate Golden Gate Park, the Presidio and Lincoln Park Golf Course. Potential future use could include the San Francisco Zoo and additional landscaped areas. Environmental review and design have been completed; the project Environmental Impact Report was certified by the Planning Commission and approved by the SFPUC s Commission in September Construction is underway, with the goal of delivering recycled water to customers in early This project will receive loan and grant funds totaling $186 million from the State Water Resources Control Board s Clean Water State Revolving Fund, which will save money for our ratepayers. For more information about the Recycled Water Program, visit sfwater.org/recycledwater. 5

8 Local Water Supplies (continued) NON-POTABLE WATER PROGRAM In 2012, San Francisco established the Onsite Water Reuse for Commercial, Multi-family and Mixed Use Development Ordinance. Commonly known as the Non-potable Water Ordinance, it added Article 12C to the San Francisco Health Code, allowing for the collection, treatment and use of alternate water sources for non-potable uses in buildings. Since 2012, the Non-potable Water Ordinance has been amended to allow for district-scale projects, where two or more parcels can share alternate water sources. In 2015, Article 12C became mandatory and now requires new development projects of 250,000 square feet or more of gross floor area to install and operate an onsite non-potable water system. San Francisco s Non-potable Water Program was established to create a streamlined permitting process and help designers and developers look holistically at a project s available alternate water sources and non-potable demands. Common alternate water sources include rainwater, stormwater, graywater, blackwater and foundation drainage. Replacing the demand for toilet and urinal flushing with non-potable water can offset approximately 25% of the total potable water use in a residential building, and up to 75% in a commercial building. Other potential non-potable demands include irrigation, cooling/heating applications, process water and clothes washing. Using onsite non-potable water systems to meet these demands can reduce potable water use anywhere from 50% to 95%. BLACKWATER Wastewater from toilets, dishwashers, kitchen sinks and utility sinks. GRAYWATER Wastewater from clothes washers, bathtubs, showers and bathroom sinks. FOUNDATION DRAINAGE Nuisance groundwater from dewatering operations. RAINWATER Precipitation collected from roofs and above grade surfaces. STORMWATER Precipitation collected from at or below grade surfaces. 6

9 In FY , the Non-potable Water Program received 20 water budget applications to install onsite non-potable water systems. These new projects could offset approximately 33 million gallons of potable water per year to meet a portion of their non-potable demands. The Non-potable Water Program also offers grants to projects that install onsite non-potable water systems voluntarily under Article 12C. In FY , SFPUC awarded a grant to one project that is proposing to install an onsite blackwater system for toilet flushing, irrigation and cooling tower makeup. The project will offset about 5.6 million gallons per year of potable water. Since the Non-potable Water Program s inception in 2012, the total potable water offset is approximately 94 million gallons per year, among a total of 80 projects. The SFPUC is at the forefront of the movement to enhance water supply reliability through use of onsite non-potable water. In partnership with a coalition of public health agencies and water utilities from across the county, the SFPUC led an effort to evaluate existing water quality standards for alternate water sources develop recommendations to help regulators implement oversight and management programs for onsite non-potable water systems, and establish uniform standards among states. After a year-long research effort, Risk-Based Framework for the Development of Public Health Guidelines for Decentralized Non-potable Water Systems was published by the Water Research Foundation and Water Environment & Reuse Foundation to provide regulators with an appropriate water quality framework and monitoring regimes. For more information about the Non-potable Water Program, visit sfwater.org/np. 7

10 Water Conservation Program The SFPUC continues to provide a comprehensive water conservation program open to residents, municipal facilities, parks, hotels, universities and retail customers. Core services include indoor and outdoor Water-Wise Evaluations, incentives for replacement of old plumbing fixtures, free water-efficient plumbing devices, landscape efficiency programs, tools to monitor water use and public outreach such as gardening classes and presentations. The SFPUC also supports planning and implementing conservation legislation as an effective way to institutionalize water conservation. For more information, visit sfwater.org/conservation. FY SAN FRANCISCO RETAIL WATER CONSERVATION PROGRAM PERFORMANCE & SAVINGS FY activities implemented through the SFPUC water conservation program are estimated to have a potential lifetime water savings of 1 billion gallons 1. 1 Billion Gallons Total Estimated Lifetime Water Savings 58% 14% 28% Non-Residential Single Family Multi-Family EIGHT-YEAR SUMMARY: WATER CONSERVATION PROGRAM ACTIVITY FY through FY FY Number of Devices Distributed Aerators Showerheads Other* 36,385 50, ,904 Number of Fixtures Installed Toilets Urinals Clothes Washers 1,614 26,611 44,524 Water-Wise Evaluations 33, ,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90, , , , , ,000 * Other devices include toilet leak repair flappers and fill valves, garden spray hose nozzles and restaurant pre-rinse spray hose nozzles. 8 1 Water conservation savings are estimated using the SFPUC Water Conservation Tracking Model. Savings are estimated lifetime cumulative water savings, up to 30 years. One billion gallons roughly equals 3,269 acre-feet of water. An acre-foot is the standard metric used by many water agencies to report lifetime water savings. One acre-foot is roughly equivalent to a football field filled with one foot of water.

11 WATER-WISE EVALUATIONS The SFPUC conducted over 3,000 site-specific surveys for residential and commercial buildings, providing water efficiency recommendations for indoor and outdoor uses, irrigation system assessments and leak identification. Water conservation technicians also helped customers identify old plumbing fixtures that qualify for financial replacement incentives and provided free water-efficient plumbing devices including showerheads, aerators and toilet leak repair parts. Customers who received Water- Wise Evaluations were also provided comprehensive reports including estimated water and cost savings from recommended improvements. FREE HIGH-EFFICIENCY PLUMBING DEVICES The SFPUC provided 19,176 water-efficient showerheads, faucet aerators, garden spray hose nozzles and toilet leak repair parts to help residential and commercial properties achieve immediate water savings. All retail customers are eligible to receive free plumbing devices during a Water- Wise Evaluation. Residents of single family homes and multi-family properties under 10 units can also pick up select devices from the SFPUC s headquarters located at 525 Golden Gate Avenue in San Francisco. 9

12 Water Conservation Program (continued) PLUMBING FIXTURE REPLACEMENT INCENTIVES Replacing old, water-wasting plumbing fixtures with new efficient models is one of the most significant ways to reduce water use in homes, apartment buildings and non-residential buildings. This helps stretch the SFPUC s water supplies. Since 2005, the SFPUC s toilet and urinal incentive programs replaced over 53,000 inefficient fixtures, resulting in an estimated 20,000 acre feet of active water savings through the year Below are highlights for FY Toilet and Urinal Rebates: The SFPUC provided 5,020 rebates to customers who replaced inefficient toilets that used 3.5 gallons per flush (gpf) or more with new high-efficiency toilets (HETs). Toilet rebates ranged from $125 for tank toilet models to up to $500 for flushometer toilet models. In addition, 181 urinal rebates were provided to customers of up to $500 for the replacement of urinals flushing 1.5 gpf or more with qualifying high-efficiency urinals. WeFix Case Study SAN FRANCISCO FIRE DEPARTMENT The San Francisco Fire Department participated in the WeFix Program, replacing over 180 inefficient toilets and urinals throughout 25 fire stations and training facilities. In Chinatown, Station No. 2 reduced its water use by 38%. Plumbing Fixture Replacement Program: Planned during the height of the drought as a way to help accelerate the replacement of old, water-wasting fixtures, the SFPUC launched the Plumbing Fixture Replacement Program (PREP), a toilet and urinal replacement program to help residences and businesses retrofit some of the last inefficient fixtures in our retail service area. During this fiscal year, 900 applicants were approved to replace over 4,000 fixtures. Water-Efficient Fixture Improvement Program (WeFix): The SFPUC continued to partner with San Francisco Public Works, and during this fiscal year, replaced 231 inefficient toilets and 83 inefficient urinals throughout 18 City department facilities. 10

13 CLOTHES WASHER REBATES The SFPUC continued to partner with Bay Area water agencies and Pacific Gas and Electric Company (PG&E) to provide a combined rebate of $150 per washer for the purchase and installation of 1,196 qualifying ENERGYSTAR Most Efficient clothes washers in SFPUC s retail service area. The SFPUC also provided 68 rebates of up to $500 per washer to customers installing qualifying coin-operated, high-efficiency, commercial-style clothes washer. COMMERCIAL EQUIPMENT RETROFIT GRANT PROGRAM The Commercial Equipment Retrofit Grant Program provides businesses funding to implement onsite equipment efficiency upgrades. In FY , the program provided incentives for university laboratory steam sterilizer replacements and a large commercial dish washing machine. The combined estimated water savings of the two projects is 6.6 million gallons of water per year. Case Study: UCSF The University of California San Francisco (UCSF) partnered with the SFPUC to increase the water efficiency of their Genentech Hall laboratory by replacing seven old, inefficient sterilizers with new water efficient sterilizers. Estimated 10 Year Water Savings 64 million gallons Project Hardware Cost and Rebate Amount Cost: $674,849 Rebate Amount: $86,080 11

14 Water Conservation Program (continued) RAINWATER HARVESTING PROGRAM Rainwater harvesting is the practice of collecting and using rainwater for landscape irrigation or toilet flushing. Capturing rainwater at your home or business reduces drinking water otherwise needed for irrigation and reduces the runoff entering our combined sewer system during storm events. The SFPUC s Rainwater Harvesting Program provided residents and businesses with 26 discounted rain barrels and 16 discounted cisterns. LAUNDRY-TO-LANDSCAPE PROGRAM The SFPUC continued its Laundry-to-Landscape (L2L) Program, which offers residents a $125 discount off the purchase of a graywater kit to direct water from the clothes washing machine into the garden for irrigation. This year, 13 discounted graywater kits were provided to residential customers. Program participants also receive training, access to a free installation tool kit and onsite technical assistance to help install, design and maintain their graywater systems. LANDSCAPE AUDITS The Landscape Technical Assistance Program (LTAP) provides comprehensive landscape and irrigation assessments to San Francisco retail customers with over a half-acre of irrigated area. This year, the SFPUC assessed six landscape sites and identified irrigation efficiency improvements and plant recommendations. 12

15 Water Conservation Program (continued) LARGE LANDSCAPE GRANT PROGRAM The Large Landscape Grant Program provides grant assistance to customers with landscapes over a half-acre and who implement irrigation and planting improvement projects that reduce potable water use. In FY , the SFPUC solicited proposals and awarded grants to the following projects: Washington Square Park In the heart of North Beach, this 2-acre public park will reduce water use by an estimated 60% by redesigning the irrigation system and replacing perimeter areas of lawn with climate-appropriate plantings. Forest Hill MUNI Station This project will replace a 40-year old irrigation system and install new drought tolerant and native plantings to reduce water use by 40% and improve overall site conditions for public transit riders and the neighborhood. Sunol Glen Elementary School Located outside of San Francisco, Sunol Glen Elementary is a SFPUC retail water customer and will implement irrigation and planting improvements to their athletic field, courtyard and front entrance to achieve a 45% reduction in landscape water use. COMMUNITY GARDEN GRANTS Our Community Garden Grant Program provides irrigation connections to help our community better monitor and efficiently manage its water use. During FY , the SFPUC awarded grant funding to install dedicated irrigation water meters at five community gardens including Jungle Stairs East, Crocker Amazon Farm, La Playa Median Garden, Ridge Lane Walkway and the Glen Park Greenway Project. The Crocker Amazon project will transform underutilized land into a community farm highlighting water conservation and sustainable food growing practices. 13

16 Community Outreach & Education The SFPUC values the long-standing partnerships that we have established with the diverse communities we serve. We also value transparent communication and strive to address constituent inquiries and concerns in a timely fashion. We continue to educate the public about local water supply issues and promote water conservation in our community through: Innovative educational campaigns Media and crisis communications Informative print and digital publications in multiple languages Engaging social media content Public hearings, community events and educational presentations SAN FRANCISCO GROUNDWATER SUPPLY PROJECT OUTREACH Building upon over 10 years of community engagement for the Groundwater Program, the SFPUC focused outreach efforts this year on helping stakeholders understand the vital importance of the San Francisco Groundwater Supply Project. In addition to launching a city-wide educational campaign, the San Francisco Groundwater Project was featured in eight earned media stories in print and on the radio. The SFPUC distributed an educational video on our social media outlets, and featured the story several times in agency print and digital newsletters. Staff conducted 11 presentations to key stakeholder groups, and participated in two public hearings: one at the San Francisco Board of Supervisors and the other at a regular meeting of the San Francisco Public Utilities Commission. 14

17 CUSTOMER WATER USE TOOLS The My Account web portal allows customers to view their water use, track their progress toward meeting conservation targets and view and pay their water bills electronically. Since its launch in 2014, registration for My Account has steadily increased to almost 62,000 users, or about 35% of the retail customer base. My Account was upgraded in fall 2017 to provide customers with water use data for every hour, in addition to a total daily water use summary. Reviewing hourly data can help customers see when leaks occur. Account holders can register at myaccount.sfwater.org. LEAK ALERT PROGRAM Automated water meters are now in place for about 98% of San Francisco s approximately 178,000 water accounts, providing the SFPUC with hourly water consumption data. The SFPUC developed a leak detection program to notify single family customers whose water meters recorded continuous use for three or more days. Through this program, 26,000 postcards were sent to 7,200 single family customers, about 6% of our single family account holders, indicating they may have a leak and should inspect their indoor plumbing fixtures and irrigation system. Approximately 76% of the homes notified addressed the leaks within four weeks. In September 2017, the SFPUC expanded its leak detection program to alert customers with continuous use by phone call, voic , text message, and letter. The SFPUC will also be exploring potential high usage alerts for non-residential customers. WATER CONSERVATION IN SCHOOLS The SFPUC is committed to fostering the next generation of environmental stewards by providing the communities we serve with educational resources. In FY , we continued to offer free teacher resources, including curriculum designed to teach 3rd to 5th grade students how they can help protect our natural resources and prevent pollution. In total there were 55 classroom presentations and 30 field trips to waterwise demonstration gardens. 15

18 Forward Thinking Water Supply Planning The Hetch Hetchy Regional Water System has served the San Francisco Bay Area for nearly 100 years and will continue to be the cornerstone of our water supply. But in light of uncertainties due to climate variability, earthquakes, regulatory changes and population growth, our ability to deliver water reliably is at risk if we don t proactively plan for our community s water future. The SFPUC continues to work with other Bay Area water agencies to explore regional water supply opportunities such as transfers and purified water projects that can be developed jointly. It takes years, if not decades, to evaluate, fund and develop new water supply projects. The SFPUC has a responsibility to plan and implement projects now to be ready in advance of the need so we can reliably maintain a high-quality water supply. Diversifying our water sources is one of the most important steps we are taking to prepare for the risks we face and ensure a sustainable water supply for generations to come. REGIONAL GROUNDWATER STORAGE & RECOVERY PROJECT The Regional Groundwater Storage and Recovery Project is a partnership between the SFPUC, the California Water Service Company (serving South San Francisco and Colma), the City of Daly City and the City of San Bruno. This project is a sustainable, conjunctive use project that has storage and recovery components. During years of normal or heavy rainfall, the project will provide additional surface water from the Regional Water System to the partner agencies in order to reduce the amount of groundwater pumped from the South Westside Groundwater Basin. Over time, the reduced groundwater pumping will result in increased storage of up to 20 billion gallons. The stored water will serve as an additional water supply during a drought. Construction of Phase 1 of the project, consisting of installation of 13 production wells, will be completed in

19 BAY AREA REGIONAL RELIABILITY PARTNERSHIP The SFPUC is part of the Bay Area Regional Reliability (BARR) Partnership. Through BARR, the SFPUC is working with Alameda County Water District, Bay Area Water Supply and Conservation Agency, Contra Costa Water District, East Bay Municipal Utility District, Marin Municipal Water District, Santa Clara Valley Water District and Zone 7 Water Agency to identify and develop opportunities for collaboration to improve water supply reliability throughout the region. In June of 2017, BARR completed a Drought Contingency Plan (DCP) for the region served by these agencies. The DCP was the first activity of the regional partnership and was co-funded by a grant from the U.S. Bureau of Reclamation. In addition to the BARR agencies, the DCP involved over 20 stakeholder groups, representing various environmental, planning and industry organizations in the region. The DCP identified short- and long-term actions and projects that two or more partners could take in response to droughts and other emergencies, thereby improving water supply reliability. The 15 collaborative project opportunities identified in the DCP address interconnectivity (interties), storage, treatment and supply and operations. The BARR agencies will continue to collaborate to advance specific opportunities in the coming year. DALY CITY RECYCLED WATER EXPANSION PROJECT Daly City operates an existing tertiary treatment facility with a permitted capacity of 2.77 mgd, part of which serves Harding Park and Fleming Golf Courses. The SFPUC is working with Daly City to assess the feasibility of building a project that would add a new tertiary treatment process to provide an additional 3 mgd of treatment capacity during the irrigation season. New pipelines, pump stations and offsite storage would be constructed to complete the recycled water distribution system and deliver water to new customers for irrigation purposes. The purpose of the project is to reduce irrigation reliance on the groundwater basin; provide local, sustainable and drought-proof water supply; and to preserve available groundwater supplies for drinking water. In FY , the SFPUC worked with Daly City to conduct pilot testing, environmental review and 30% engineering design for the project. 17

20 Forward Thinking (continued) RESOURCE MANAGEMENT AT LAKE MERCED Lake Merced is made up of four interconnected lakes and provides a vital link for wildlife, particularly for migrating birds. In an emergency, Lake Merced water can be used for firefighting or sanitation purposes if no other sources of water are available. The SFPUC and the City of Daly City are working together to improve the Vista Grande stormwater system, which drains the northwestern portion of Daly City and an unincorporated portion of San Mateo County areas originally within the watershed of Lake Merced. Project goals include improving stormwater drainage, minimizing flooding risk and providing a sustainable water source for Lake Merced management. The project is currently undergoing environmental review, which is anticipated to be completed in PURIFIED WATER PROGRAM The SFPUC is partnering with various experts to explore the feasibility of purified water projects through direct and indirect potable water reuse. With scientific and regulatory advances in this field, and through highly advanced treatment and monitoring, recycled water is being treated to drinking water standards in some parts of the country. As we look to the future, the SFPUC is keen to understand what role purified water can play in our water supply portfolio to better adapt to future water supply needs. In partnership with the Water Research Foundation, the SFPUC is conducting a 9-month research project in our headquarters. We will be taking one third of the effluent currently produced by our constructed wetland treatment system and bringing it to drinking water standards. We will collect data for analysis before the water we produce is recombined for toilet flushing in the building. Regionally, we are working with Silicon Valley Clean Water and the Santa Clara Valley Water District to determine the feasibility of producing up to 15 mgd of purified water. The preliminary feasibility studies for both of these projects are underway. We are also participating in Contra Costa County Water District s Los Vaqueros Expansion Project to determine whether there may be purified water storage and exchange opportunities that can help secure water supply for our regional customers. 18

21 Forward Thinking (continued) OneWaterSF OneWaterSF is a new framework for how the SFPUC does business and a vision for how we can better adapt to future challenges. It is an integrated planning and implementation approach to managing finite resources for long-term resiliency and reliability. This requires a shift from thinking about one project at a time to thinking more holistically about project impacts and potential synergies between our water, wastewater and power operations. With OneWaterSF, the SFPUC will recognize the potential of all the resources within our system. OneWaterSF allows us to look more holistically at our system for efficiencies, project synergies and opportunities to harness clean energy, and to match the right water to the right use. In FY , the SFPUC laid out a Vision and Guiding Principles for OneWaterSF and created the OneWaterSF Working Group, which includes staff from throughout the SFPUC. Highlighted below are some key initiatives. Expanding Recycled Water Impact This initiative will review potential non-potable, recycled and purified (potable) water opportunities in San Francisco. A white paper examines the treatment of wastewater from the Southeast and Oceanside treatment plants along with onsite non-potable water systems in new buildings throughout San Francisco. Sewer Flushing Expanding on the Recycled Water Truck Fill Station, this Initiative establishes a six-month pilot program to test the use of non-potable water produced at the Southeast Treatment Plant for flushing sewer lines. Sewer line flushing maintains proper flows and minimizes odors associated with sending wastewater to the treatment plants. 19

22 Forward Thinking (continued) OneWaterSF Biosolids to Market Place This Initiative will reduce the amount of biosolids sent to landfills in San Francisco by expanding biosolids reuse opportunities. The SFPUC is assessing the feasibility of producing high quality soil amendments suitable for use in landscaping, construction projects and soil replenishment. Recycling biosolids back to soil can improve soil health and increase water holding capacity and carbon sequestration. Creek Daylighting This Initiative will work to daylight the historic Yosemite Creek, which begins at Yosemite Marsh on the northeast side of McLaren Park and flows directly into the combined sewer system. The new creek bed will drain over 100 acres of McLaren Park and create new green space and native habitat for birds and butterflies. This Initiative will also explore opportunities to integrate the Gleneagles Golf Course into the project by converting the golf course irrigation supply to recycled water. Controlling Stormwater Flows Because San Francisco operates a combined sewer system, the sewers can become overwhelmed during periods of heavy rain when large amounts of stormwater enter the system. This Initiative would provide resources to property owners and community members to disconnect downspouts from the sewer system and redirect that runoff to rain barrels and landscaped areas. 20

23 Awards ACWA CLAIR A. HILL AWARD San Francisco s Non-potable Water Program was selected as a finalist for the Association of California Water Agencies 2017 Clair A. Hill Agency Award for Excellence. The Non-potable Water Program was recognized for demonstrated commitment to excellence, creativity and innovation in addressing water industry issues, and clear, quantifiable evidence of success. SFPUC PEER AWARD Obiajulu Nzewi won a SFPUC Recognition Award for his work on the Pacific Rod and Gun Club remediation project and his steadfast commitment to Lake Merced s water quality. SFPUC TEAM RECOGNITION AWARD The Water Conservation Section won a SFPUC Team Recognition Award for their dedication to water efficiency, strong sense of teamwork and excellent customer service. Wet or dry year, they have helped thousands of residents, businesses, and municipal departments save water, making San Francisco s per capita water use one of the lowest in California. 21

24 Water Resources Division 525 Golden Gate Avenue, 10th Floor San Francisco, CA sfwater.org/localwater November 2017