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.
In April 2024, the U.S. EPA announced a new national maximum contaminant level (MCL) for PFAS. In addition, the California Office of Environmental Health and Hazard Assessment adopted a more stringent public health goal for these same substances.
DWA performs lab tests for potential contaminants like PFAS. Historically, DWA has not found PFAS at levels exceeding the MCL in our retail service area. In October 2024, DWA had one sample result from one well for PFOS (perfluorooctanesulfonic acid, a per- and poly-fluoroalkyl substance) that was slightly higher than the Consumer Confidence Report Detection Level (CCRDL)*.
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. The federal regulation requires that water providers meet the MCL requirements by 2029.
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.
*Public water systems are required to report any PFAS detections above the Consumer Confidence Report Detection Level (CCRDL) in their annual Water Quality Report.
