Resources: Water Loss Regulation Economic
Model Customization Training 
“I want to thank all of you that contributed to this webinar. This was the most beneficial and straightforward information we've received to date. Thank you!”
Madeline Blua

Additional Information


California Water Loss Control Collaborative

CA-NV AWWA is leading a broad group of stakeholders that came together in 2015 to combat water loss in California.  The California Water Loss Control Collaborative includes utility personnel, industry organizations, non-profits as well as state entities.

The Collaborative includes:

  • CA-NV AWWA Water Loss Control Committee – share best practices, non-revenue water challenges and successes, discuss technology innovations, and participate in planning conference technical sessions and specialty workshops. Coordinates with the AWWA Water Loss Control Committee.
  • California Water Loss Collaborative Steering Committee – overarching coordination and program implementation between Collaborative activities. For information, contact Amy Talbot,
  • Water Audit Validator (WAV) Certificate Program - Water Audit Validators examine water loss audit inputs prior to audit submission to the California Department of Water Resources (per SB555).
  • Department of Water Resources (DWR) - Water Loss Audit Reporting
    • Water Loss Program
    • Water Loss Audit Reports
    • Regulations
    • Submission
    • Note: AWWA recommends using version 6.0 unless your regulatory agency requires you to use version 5.0. California Urban Water Suppliers should continue to submit version 5.0 water audits to DWR. DWR will give advance warning when version 6.0 is required. Currently, DWR's WUEData portal accepts version 5.0 water audit submittals only.
  • State Water Resources Control Board - Water Loss Performance Standards

The Water Loss Technical Assistance Program Final Report is now available! Click
here to read it.

For more details on the dates and resources of the Water Loss TAP, please visit

The Water Loss Control Technical Assistance Program (WLTAP) has been funded wholly or in part by the United States Environmental Protection Agency and the State Water Resources Control Board, through the State Revolving Fund set-aside for technical assistance.  We are grateful to the EPA and the Water Board for their support.

If you have any questions please contact the Water Loss TAP Team, working on behalf of the Section, at