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Renewable Water Resource for the Future

Renewable Water Resource for the Future. League Annual Conference Phoenix/August 19-22. Water Plan 2000-2050 (2012 Update). We are purchasing and storing our entire CAP allocation of 144,172 acre-feet per year

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Renewable Water Resource for the Future

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  1. Renewable Water Resource for the Future League Annual Conference Phoenix/August 19-22

  2. Water Plan 2000-2050(2012 Update) • We are purchasing and storing our entire CAP allocation of 144,172 acre-feet per year • We are continuing to plan for and implement programs to fully utilize our renewable water resources • Recycled water is an important resource to diversify our renewable water supply portfolio

  3. Total Potable Water Use at 1989 Level Groundwater Pumping at 1959 Level Reclaimed Production Potable Production CAP Production Transition to Renewable Supplies 140,000 Reclaimed Water 120,000 100,000 Water Production for TW Service Area (Acre-Feet) CAP 80,000 60,000 40,000 Pumped Groundwater 20,000 2013 1940 1950 1960 1970 1980 1990 2000 2010 Year 0

  4. Potable Water Use - Projection to 2050 with Shortage 260,000 240,000 220,000 ? 200,000 180,000 Volume (Acre-Feet) GPCD = 130 160,000 140,000 120,000 100,000 Colorado River Water 80,000 60,000 2020 2025 2030 2035 2040 2045 2050 Year Combination of Renewable and Finite Water Supplies Banked Colorado River Water * The population data was provided to TW by United States Census Bureau Potable Demand @130 GPCD

  5. 2012 Water Plan Update Recommendations • Limit groundwater pumping at sustainable levels by using renewable resources • Continue water conservation programs and “wet” water resource management as a part of the overall sustainable water strategy • Fully utilize Recycled Water for future supply

  6. Goals of the Recycled Water Program • Fully use the City’s recycled water entitlement for the benefit of Tucson Water customers • Collaborate with Mayor & Council, Tucson Water customers, and other stakeholders on recycled water issues and investment decisions • Maintain Tucson Water’s commitment to the Conservation Effluent Pool to benefit the local environment

  7. Recycled Water:A New Vocabulary • Recycling water for 30 Years as “Reclaimed Water” • Reclaimed Water- Treated wastewater with additional filtration. Not suitable for drinking • Potable reuse: Purification of treated wastewater for drinking water • Direct Potable Reuse (DPR): Purified water goes directly into drinking water system • Indirect Potable Reuse (IPR): Purified water goes through environmental buffer before introduction to drinking water system.

  8. National Water Research Institute (NWRI) Independent Advisory Panel Dr. Shane Snyder (Chair), Chemist/Toxicologist U of A – Chemical & Environmental Engineering Dr. Anne Browning-Aiken, Public Policy U of A – Udall Center Dr. Ian Pepper, Microbiologist U of A – Soil, Water & Environmental Science Michele Robertson, Hydrologist Montgomery and Associates Ron Wildermuth, Public Outreach / Water Utility Representative West Basin MWD, Manager of Public and Government Affairs Dr. JorgDrewes, Treatment Engineer Colorado School of Mines Bob Hultquist, Water Reuse Regulatory Criteria Independent Consultant, Former CDPH

  9. Recycled Water Master Plan Recommendations • Continue to invest in the Reclaimed Water System to maintain efficient service to existing and potential future customers • Pursue full utilization of the City’s recycled water entitlement through indirect potable reuse (IPR) to diversify renewable supplies

  10. Why Recycle Now? • Long Term Planning: Development of water supplies for the future • Drought: Cutbacks in deliveries of CAP Water • Community Investments: • $250 Million – Storage and Recovery of CAP Water • $600 Million – Wastewater Improvements • $25 Million – Purchase of CAP Allocation (FY15)

  11. Recycled Water Program • Purified water will continue to meet or exceed drinking water standards • Positive steps towards full utilization of the recycled water resource as part of the urban water cycle • Continuous coordination with the City’s leadership and community • Periodic review and update to reflect industry trends and changing conditions

  12. Implementation Timeline

  13. Recycled Water Is: • Integral to Tucson Water’s continuous planning for resource reliability • Locally-controlled, renewable resource • Supported by past and future significant community investments • Available to supplement Tucson’s water supply and support the City’s commitment to the environment

  14. The Recycled Water Program charts a course for reuse implementation

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