Water Recycling Vision for the Bay Area Bay Area Council Water Policy Committee May 14, 2008

1. Water Recycling Vision for the Bay AreaBay Area Council Water Policy CommitteeMay 14, 2008

2. Presentation Summary • Bay Area Needs Reliable Water • Sustainability = Multiple Sources • Importance of Recycled Water • Near-Term Approach: Maximize Local Water Recycling • Long-Term Approach: Export Excess Recycled Water to Agricultural Uses • Possible Next Steps

3. Long-Term Reliability of Bay Area Water??? Drought ● Global Warming ● Environmental Protection

4. Long-Term Reliability of Bay Area Water??? • Southern California is in a drought 50 percent of the time • 2007 was the driest year on record in Southern California • Northern California is in a drought 25 percent of the time • Spring of 2008 was the driest on record in Northern California

5. Bay Area Drought Vulnerability Shortage Delivery Source: Bay Area IRWMP

6. Alternative Sources of Water Conservation ● Groundwater ● Desalination + Recycled Water

7. Population has increased Water use has remained steady Conservation Efforts Have Been Effective Source: Bay Area IRWMP

8. Recycled Water Conservationand Other Desalination Sustainable Water Management Approach Imported Supply Local Watershed Groundwater Pie chart is for illustration purposes only

9. What is Recycled Water? • It is a highly treated, highly regulated supply • It is used for: • Landscape irrigation • Ag irrigation • Toilet flushing • Industrial cooling • Groundwater recharge

10. Current Recycled Water Use is Significant 2008 Bay Area RW Use = approx. 50,000 AFY Urban Reuse Ag Reuse Indirect Potable Reuse

11. Urban Reuse Future Potential Use is Even Greater = 120,000 AFY

12. Ag Reuse Future Potential Use is Even Greater = 500,000 AFY Total Long-Term Potential Supply > 600,000 AFY

13. Recycling Potential Exceeds Other Options

14. Near-Term Approach: Maximize Local Water Recycling SVC FS VAL BEN NSD CCWD EBMUD Marin Bay Area Water and Wastewater Agencies Need to Jointly and Aggressively Implement Recycled Water Projects Zone 7 ACWD SFPUC SCVWD

15. Near-Term Approach: Maximize Local Water Recycling • Incentivize water agencies—eliminate “use it or lose it” wholesale contracts • Incentivize wastewater agencies—develop pollutant trading credits • Obtain funding for separate distribution systems • State/federal funding for backbone infrastructure • Developer funding—dual plumbing ordinances • Conduct public education to maximize acceptance

16. Innovative Water Exchanges Should Be Pursued w/Recycled Water Opportunities w/Water Supply Needs

17. Innovative Water Exchanges Should Be Pursued

18. Napa/Sonoma Delta-Mendota Canal Bay Area Storage San Joaquin Valley Monterey Bay Long-Term Approach: Export Excess Recycled Water to Ag Uses

19. Benefits of Bay Area Water Recycling Helps Preserve Delta Flow Reduces Seawater Intrusion Preserves Open Spaces Provides Drought Insurance Reduces Bay Discharges Helps Reduce Global Warming Helps Increase Stream Flows

20. Possible Next Steps • Form recycled water JPA – need water and wastewater agencies working together to make local recycling really happen • Increase efforts to secure outside funding – recent Miller bill was a good start • Increase public outreach – need regional approach with consistent messages • Re-assess feasibility of export to Delta Mendota Canal in light of global warming and other issues

21. Questions and Answers Randy Raines rraines@rmcwater.com (415) 321-3411