Real Water Loss: Data from Water Loss Audits

This table includes a subset of information related to water loss and water system parameters, as reported by water systems in the water loss audits submitted to the Department. The [Water Audit Data](https://wuedata.water.ca.gov/awwa_export) are available on the WUE Data Portal. This table draws from the following fields: * Reporting start and end dates * Volume of real water losses, in acre-feet * Number of service connections * Length of mains * Audit status If available, this table contains data from water audits that were due by January 1, 2025; if those are unavailable, it contains data from the audits due by January 1, 2024. For water systems for which the listed data are unavailable from either year, the fields with information from the water loss audits are blank. This table includes data for public water systems owned and operated by urban retail water suppliers. The list of public water systems in this resource is based on the PWSID-DWRID crosswalk resource that is also a part of the Urban Water Use Objectives dataset. Consistent with Water Code section §10608.34, urban retail water suppliers are required to submit to the Department completed and validated water loss audits. California Code of Regulations section 638.5 identifies annual reporting requirements, which include the system-specific data entered into each field of the AWWA Free Water Audit Software. To submit or update an annual water loss report, please email [WaterLoss@water.ca.gov](mailto:WaterLoss@water.ca.gov).