Each year Chester Public Utility District tests its drinking water and publishes the results in a Consumer Confidence Report, also called the Water Quality Report, as required by the State Water Resources Control Board. The report explains where Chester’s water comes from, what was tested, and how the results compare with state and federal drinking water standards.

Current report: 2025 Consumer Confidence Report (PDF)

Questions, or want a paper copy mailed to you? Call the District office at (530) 258-2171, Monday through Friday, 8:00 a.m. to 4:30 p.m. (closed 12:00 to 1:00 p.m.).