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Case studies

Moulton Niguel Water District

To reduce its reliance on imported water, and combat recurring drought and more extreme weather, Moulton Niguel Water District implements integrated water management using a One Water approach that includes robust consumer efficiency rebates, increased non-potable reuse for outdoor irrigation, nuanced water demand data analysis, and multifaceted public education programs.

Project at a Glance

Utility Overview

  • Utility: Moulton Niguel Water District
  • Location: South Orange County, California
  • Population served: 172,000
  • Service area: 37 square miles

Challenges

  • Recurring drought
  • Limited local supply
  • More extreme weather

Solution

  • Integrated water management using a One Water approach that includes robust consumer efficiency rebates, increased non-potable reuse for outdoor irrigation, nuanced water demand data analysis, and multifaceted public education programs.

Costs and funding sources

  • Efficiency Programs
    • Budget: $2.5 million annually
    • Funding sources: Dedicated rates from budget-based rate structure
  • Reuse Programs
    • Budget: $10 million annually
    • Funding sources: annual operating revenue and capital improvement budget

Benefits of MNWD's Efficiency & Reuse Programs

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Average of 4,000 acre-feet of water savings annually
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Total of 26,000 acre-feet of water saved since 2011
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Removed 5 million square feet of turf saving 500 million gallons of water since 2012
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Reuse meets 25% of demand with local supplies
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Saves $6 million annually in imported water costs through reuse
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Demand forecasting tool saved $20 million in avoided costs of infrastructure investments

Check out WaterNow’s Tap into Resilience Toolkit to learn even more about investing in localized solutions like MNWD’s in your community.

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