Per- and polyfluoroalkyl substances (PFAS) are a group of thousands of man-made chemicals, including perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS), that have been widely used in numerous consumer products.

The California Office of Environmental Health and Hazard Assessment adopted rigorous public health goals for PFAS in 2024. In 2025, the California State Water Resources Control Board (SWRCB) Division of Drinking Water issued new and revised notification and response levels for some of these substances.

DWA performs lab tests for potential contaminants like PFAS. DWA did not detect PFAS in our retail service area at levels exceeding the state’s notification levels in 2025. We are conducting quarterly tests in 2026 to ensure we continue to meet regulations.

DWA continues to be in compliance with all regulations and will complete additional testing as required to ensure we meet all state and federal standards. 

For more information read the fact sheet below or download the document by clicking here.

You can also learn more about water quality and PFAS in our annual Water Quality Report.