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Pasadena Water & Power

  • Water Integrated Resource Plan

    Sprinkler SidewalkWith so much concern about supply shortfalls and predictions for long-term drought, PWP and its customers must carefully manage all available water.

    Two important documents, the Water Integrated Resources Plan (WIRP) and the Urban Water Management Plan (UWMP), give PWP a clear, comprehensive, long-term strategy for maximizing our supply and providing reliable water to our customers for the next two decades and beyond.

    Though the documents are similar, the WIRP is meant as a planning tool solely for Pasadena while the UWMP, required of all water utilities by the California Department of Water Resources, helps the state ensure an adequate supply for all California communities. 

    Water Integrated Resource Plan

    The Water Integrated Resources Plan (WIRP), adopted by the Pasadena City Council on January 31, 2011, is our city’s blueprint for ensuring reliable, cost-effective, and environmentally responsible water supply for the next 25 years.

    WIRP Objectives:  

    • Provide a reliable water supply
    • Maintain affordability, while addressing fairness and equity
    • Ensure safe, high-quality drinking water
    • Protect receiving waters and the environment
    • Protect cultural and recreational resources
    • Maximize efficiency of water use
    • Maintain quality of life and positive economic climate
    • Reduce risk and maximize opportunities
    • Ensure public safety
    • Reduce energy footprint for water operations 

    2011 Water Integrated Resource Plan Documents  

    View a copy of the 2011 WIRP and see the links below to the Appendices of the final approved WIRP:

    Appendix A   Appendix D   Appendix G 
    Appendix B  Appendix E  Appendix H 
    Appendix C  Appendix F  Appendix I 

    Water Integrated Resources Plan Update

    In 2018, PWP will begin the process to update the Water Integrated Resources Plan and the 2002 Water System Master Plan. The updated plan will provide a long-term blueprint for the City’s water resources and infrastructure needs and investments to provide for clean and reliable water supplies to our customers.


    For more information on water planning, call PWP at (626) 744-4409.
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