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Water Loss Control

California Water Code Section 10608.34 requires the State Water Board to develop water loss performance standards for urban retail water suppliers between January 2019 and July 2020. The State Water Board is required to evaluate the life-cycle cost of achieving these standards.

Executive Orders B-37-16 and B-40-17 direct the State Water Board and Department of Water Resources (DWR) to minimize water waste through system leaks.

Meetings and Workshops

Public Stakeholder Meeting #6 September 23, 2019, Sacramento

Agenda | Notice

Reference material for the workshop was circulated through State Water Board’s conservation list serve. Sign up for the email list at https://www.waterboards.ca.gov/resources/email_subscriptions/swrcb_subscribe.html

Public Stakeholder Meeting #5 June 7, 2019, Sacramento

Agenda | Notice

Materials for workshop (Uploaded June 11, 2019):

Public Stakeholder Meetings #4 Sacramento and February 4, 2019, Chino
Agenda | Notice

Public Stakeholder Meeting #3 September 17, 2018, Los Angeles
Agenda | Notice


Public Stakeholder Meeting #2 June 1, 2018, Oakland
Agenda | Notice

Public Stakeholder Meeting #1 March 9, 2018, Sacramento

Water Loss Auditing

California Water Code Section 10608.34 requires urban retail water suppliers to conduct and submit validated water loss audit reports to the Department of Water Resources on October 1, annually.

California Water Code Section 10631 requires all urban water suppliers to submit water loss audits with their Urban Water Management Plans every five years to DWR.

Water Loss Audit Reports from the Department of Water Resources: Regulations and Submission

Water Audit Certificate Program by CA-NV AWWA’s Water Loss Collaborative

Technical Assistance

The State Water Resources Control Board awarded $3.2 million in funding in January 2016 for technical assistance programs for water suppliers to effectively conduct and validate water loss audits and comply with SB 555, through the formation of the California Water Loss Collaborative. The Water Loss Technical Assistance Program (TAP) provided training and validation to initiate California’s validated water loss auditing process.


State Assistance and Efforts

Auditing, Validation and Control Strategies