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A Look at Long-Term Water Supply in Washington County

A Look at Long-Term Water Supply in Washington County. City of Hillsboro & Tualatin Valley Water District March 6, 2013. A community conversation about drinking water. Water is Essential to any Community. Public Health – Fire Protection – Jobs and the E conomy.

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A Look at Long-Term Water Supply in Washington County

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  1. A Look atLong-Term Water SupplyinWashington County City of Hillsboro & Tualatin Valley Water District March 6, 2013

  2. A community conversation about drinking water

  3. Water is Essential to any Community Public Health – Fire Protection – Jobs and the Economy

  4. Hillsboro's Water SystemServing 75,000 residents from the Tualatin watershed

  5. Tualatin Valley Water District provides water to 200,000 people in unincorporated Washington County and portions of Beaverton, Hillsboro and Tigard.

  6. Why do we need more water? Hillsboro and TVWD both have enough water for now, but need to plan for future—just like predecessors did for us. Million Gallons per Day Hillsboro will need twice as much water in the next 50 years as available today.

  7. TVWD Looks Ahead 82,000 new residents by 2042. More jobs and businesses too. We have enough water for today—but need to take steps to have enough water to meet future demands. Current Peak Day Water Supply Million Gallons per Day

  8. Where do communities get water? River water Groundwater Reservoirs Purchasewholesale water Water conservation

  9. Hillsboro relies on a River and Reservoirs inTualatin/Trask Watersheds Barney Reservoir Hagg Lake Upper Tualatin River No redundancy in current Hillsboro system

  10. TVWD uses a portfolio of water supplies • Ownership in Tualatin/Trask watershed supply • An aquifer storage and recovery (ASR) wellprovides backup and summer supply. • Purchase wholesale water from Portland Multiple water supplies provide redundancy.

  11. Hillsboro’s Supply Study Process Feb 2010-Sept 2012 Supply options research Sep - Dec 2012Community outreach Dec - Jan 2012Review of community feedback Jan - Feb 2013Decision on further study for preferred option

  12. TVWD Process Customer outreach October 2012 – March 2013 Board of Commissioners’ decision for further studyApril 2013 Customer input will inform upcoming decisions by the District’s elected Board of Commissioners.

  13. Water supply planning criteriafor Hillsboro • Cost • Water Quality  Reliability  Redundancy  Ownership  “Do-able” • Environmental impacts • Operational Complexity

  14. Water supply planning criteria for TVWD • Finished water quality • Cost and rate impact • Can be right-sized • Reliability • Redundancy • Implementation risk • Public and business acceptance • Construction impacts • Sustainability • Ownership / control • Non-fluoridated supply for Metzger

  15. Future water supply options River water Groundwater Reservoirs Purchasewholesale water Water conservation

  16. Water conservation is a top priority for TVWD and Hillsboro.Both agencies have strong conservation programs and have decreased per capita demand by approximately 20%. Water conservation will continue to be important, but alone is not enough to meet future needs.

  17. Future water supply options River water Groundwater Reservoirs Purchasewholesale water from Portland Waterconservation

  18. Future water supply options River water Groundwater Barney Res. & Hagg Lake Purchasewholesale water from Portland Water conservation

  19. Future water supply options River water Groundwater Barney Res. & Hagg Lake Purchasewholesale water from Portland Water conservation

  20. Future water supply options Mid-Willamette River Groundwater Barney Res. & Hagg Lake Purchasewholesale water from Portland Water conservation

  21. Cost and Rate Impacts • Economic analysis (present value) • Risk analysis • Rate impacts $ Millions Present Value = construction + ongoing operating costs Note Hagg Lake partners are including seismic rehabilitation cost share in all options.

  22. Mid-Willamette River (Hillsboro’s Preferred Option)

  23. Next Steps • Hillsboro • Water Rights Study • Action Plan • TVWD • Board Work Sessions in March and April • Board Makes a Preliminary Decision on April 24th

  24. www.tvwd.org/your-water/long-term-water-supplies How to Stay Informed… www.hillsborowatersupply.org

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