Presentation Overview

Transcription

1 City of Tucson : Managing and Integrating Water Resources for a Sustainable Water Future Presentation Overview Recent History - City/County Water Wastewater Study Coordinated Planning and Implementation Impact on Water Conservation (thoughts from Watershed Management Group) Current Tucson Water Context - Supply, Demand, Opportunities to Shift (thoughts from Ecosystem Economics)

2 Recent History City of Tucson/Pima County Water Wastewater Study April 2008 Joint Water and Wastewater Study launched April 2009 Phase I Completed Basic set of facts January 2010 Phase 2 Completed 19 goals and 56 recommended across four elements November 2010 August Year Action Plan done for Water Sustainability 14 programs and 88 activities across four elements Tucson Water Service Area Policy Adopted

3 City/County Service Areas

4 City/County - Phase 2 Goals 1. COMPREHENSIVE INTEGRATED PLANNING Encourage sustainable urban forms Direct growth to suitable growth areas Integrate land use and water resources planning Growth should pay for itself over time and be financially sustainable 2. WATER SUPPLY Work collaboratively to acquire new water supplies for reliability Maximize and make efficient use of effluent and other locally renewable water supplies Address regulatory barriers to maximizing local supplies Foster increased use of reclaimed water Be prepared for climate change and drought Photo by Daniel Lobo (CC)

5 City/County Phase 2 Goals (cont.) DEMAND MANAGEMENT Increase the effectiveness of conservation programming through coordinated planning and evaluation Establish common water conservation goals and targeted methods Manage demand through the design of the built environment Manage demand through changing behaviors Increase the use of rainwater and stormwater RESPECT FOR ENVIRONMENT Preserve existing riparian areas through coordinated regulation, policy, and outreach Identify needs and opportunities for future restoration Ensure that public projects are multi-benefit including restoration, stormwater management, recharge and public amenity Ensure the future of riparian and aquatic habitat along the effluent-dependent reach of the Santa Cruz River Develop water supply for the environment Photo by James Baskin (CC)

6 Impact of Coordinated Planning and Implementation on Water Conservation thoughts from Watershed Management Group Tucson has demonstrated ability to foster grassroots innovation and then incorporate into policies and incentives leading to watershed health: Commercial Rain Water Harvesting ordinance Rainwater incentives through Tucson Water Green Infrastructure and Grey Water ordinances Tucson embraces stormwater as an added value resource through Green Infrastructure that compliments other water reuse accomplishments to date (i.e. reclaimed)

7 Thoughts from Watershed Management Group (cont) Tucson aims to: Scale cooperative efforts throughout watershed to promote community health (shade, beauty, green space, etc) Attend to watershed and aquifer health through flood mitigation, water quality improvements, and enhanced aquifer recharge with stormwater through Green Infrastructure / Low Impact Development. Next steps to consider: Ultimately shifting our paradigm to restoring our hydroregionalism capacity -- our ability to be self-sufficient with local water resources and position us to help neighboring communities to promote regional watershed health (e.g. Colorado River Basin)

8 Current Tucson Water Context Thoughts from Ecosystems Economics Supply Demand Shift from Scarcity to Investment 8

9 Tucson Water Service Area Tucson Water Context

10 Supply Streams Tucson Water Service Area Tucson Water Context Supply

11 Supply Streams Tucson Water Service Area ( ) CAP Allocation 144,172 AF/yr 2013 Potable Demand = 101,730 AF/yr Equivalent to Demand in Groundwater Withdrawals = 31,734 AF/yr Equivalent to 1958 GW Production

12 Supply Streams Tucson Water Service Area ( ) CAP Allocation 144,172 AF/yr 2013 Potable Demand = 101,730 AF/yr Equivalent to 1993 Demand 2013 Groundwater Withdrawals = 31,734 AF/yr Equivalent to 1958 GW Production

13 Groundwater Recovery in Tucson Tucson Water Context Supply

14 Colorado River Deliveries Total CAP Storage (2013) = 424,070 AF An approximately 4-yr supply of potable water 2012: First year that TW purchased their full allocation of CAP Water CAP Allocation - 144,172 AF/yr Tucson Water Context Supply

15 CAP Infrastructure CAP Recharge Ponds CAP Transmission Line Tucson Water Context Supply

16 Declining Demands GPCD = 1980s demand 2014 Potable demand dropped 8% 88 GPCD Tucson Water Context Supply Demands

17 Tucson Water Conservation Incentive Programs Each residential customer charged $0.08/Ccf each month $3,000,000 Annual Budget Cumulative Savings ( ) 2,345 AF Toilet Replacement Residential & Commercial $75-$250 rebate Irrigation Upgrades Commercial Adjustable $$ Gray Water Residential $1,000 Rebate Rainwater Harvesting Residential $2,000 Rebate Tucson Water Context Supply Demands

18 An Unexpected Moment Water Security in Tucson Transition from groundwater to CAP over last 15 years CAP deliveries well above current needs Residential demand dropping by 4-6% a year Under the most severe Shortage Declaration, Tucson s demand is currently less than potential curtailed CAP Deliveries Bank 1 year of water every 3 years 45+ years of water storage today

19 The Question How and Where can Tucson invest its relatively robust water bank account? Participating in Regional Water Security Actions Investing Water in the Local Environment & Community Incentivizing Continued Water Conservation Tucson Water Context Supply Demands Shifting from Scarcity to Investment

20 What is the Value of Water Conservation in Tucson? Slides /Thoughts Shared by: Amy McCoy and Ray Hartwell, Ecosystem Economics American River Video Briefing Catlow Shipek, Watershed Management Group Nicole Ewing Gavin, City of Tucson City/County Water Wastewater Study Briefing 20