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David pettijohn
This document outlines Los Angeles' plan to increase local water supplies and decrease reliance on imported water through their LA's Water Reliability 2025 initiative. The plan combines groundwater remediation efforts with expanding local water supply programs, including capturing more stormwater runoff through both centralized projects and distributed, smaller-scale projects. The plan estimates that these local water supply expansion efforts could yield over 163,000 acre-feet per year of new local water at a total capital cost of $1.7 billion, reducing dependence on imported water and providing water reliability, economic, and environmental benefits.
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- 1. LA’s Water Reliability2025 Securing a high quality, sustainable local water supply September 26, 2013 LA’s Water Reliability 2025 One Water Leadership Summit
- 2. LADWP’s Long, Richand Proactive Water History Helped Transform the City of LA
- 3. LA’s Reliance onMWD Water Has Increased 7-Fold in the Past 30 Years
- 4. Using Less WaterThan 40 Years Ago Despite Population Increase of 1 Million
- 5. New Challenges RequireContinued Proactive Planning by LADWP Local Groundwater Contamination & Basin Urbanization Threats to Imported Water -Environmental -Competing Demands -Climate Change Rising MWD Water Costs
- 6. LA’s Water Reliability2025 is Combination of Two Important LADWP Initiatives + = SFB Groundwater Remediation Program Ensuring safe drinking water that meets all regulations Local Water Supply Program Securing new local water supplies LA’s Water Reliability 2025
- 7. Centralized Stormwater CaptureProjects
- 8. Distributed Stormwater CaptureProjects Elmer Avenue Retrofit Before After Cistern Rain Barrel Rain Garden
- 9. Stormwater Capture MasterPlan • Evaluate existing stormwater capture facilities and projects • Quantify maximum stormwater capture potential • Provide potential strategies to increase stormwater capture • Recommend stormwater capture projects, programs, policies, and incentives • Determine the economic mix of centralized vs distributed stormwater capture projects
- 10. Relationship of StormwaterCapture Master Plan to Other Efforts Stormwater Capture Master Plan Detailed Master Plans & Studies Identifies solutions and estimates costs, and are conducted as needed Urban Water Management Plan Required by law every 5 years, and must take a 25-year look into the future Input Input LA’s Water Reliability 2025 Summarizes all water initiatives and develops overall timing and impacts, and will be updated every year
- 11. LA’s Water Reliability2025 will Reduce Dependency on Imported Water Supplies
- 12. Summary of LocalWater Supplies and Cost Program Component Total Capital Costs (Billions, 2012 Dollars) Water Yield (Acre-Feet/Yr) Stormwater Capture Centralized Recharge $0.34 54,788 Distributed Harvesting $0.26 8,159 Water Conservation $0.43 55,016 Reuse Groundwater Replenishment $0.42 30,000 Non-Potable Reuse $0.26 15,219 Total $1.7 163,182 SFB Groundwater Remediation Program $0.6 - $0.9 92,000
- 13. Summary of Benefitsfrom Overall Program Improved Reliability During Droughts, Regulatory Restrictions and Climate Change Net Present Value Benefit of over $2 Billion for Local Water Supply Improved Water Quality of Groundwater & Receiving Waters Increased Local Societal Benefits, such as Job Creation, More Green Space