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Water Quality

The Water Quality Section is responsible for administering and carrying out the Water Quality, Cross Connections Control, and Flushing Programs. Staff is responsible for keeping current with all new State and Federal mandated water quality regulations and integrating any new requirements into the existing procedures. This section insures that Garden Grove’s water meets all applicable State and Federal water quality standards, is protected from possible cross connections, contamination and pollution.

Water Quality Reports


June 2019 - Garden Grove is one of several local agencies that received a Monitoring Order from the California State Water Resources Control Board (SWRCB) Division of Drinking Water (DDW), requiring testing for per- and polyfluoroalkyl substances (PFAS) in six of our drinking water supply wells.

While the PFOA and/or PFOS levels require local governing body notification, they are below state and response level for drinking water use. At this time, we will continue to provide service to our customers and closely monitor PFOA, PFOS, and other water-quality measurements to ensure the health and safety of our customers. There are several factors that led us to this decision, with safety and water quality as the top considerations. The City of Garden Grove is consistently working to reduce these levels in our water supply.

For more information about PFOA/PFOS or water quality testing, visit the Orange County Water District website at

Environmental Protection Agency:
Division of Drinking Water:
Food and Drug Administration:

Backflow Information

Click here to view the Backflow Testers List
Click here to view a blank Backflow Report

Frequently Asked Questions