Selected Drinking Water Program Publications

Approved Backflow Prevention Devices

Title 17 of the California Code of Regulations requires public water systems to use backflow prevention devices that have been laboratory and field tested by a recognized testing organization that has demonstrated its competency to the Department. The University of Southern California's Foundation for Cross-Connection Control and Hydraulic Research is one such organization. USC's Foundation maintains a list of approved devices on its website at:

Please note that USC's approved device list includes those devices certified as "lead-free", as well as those aren't. Pursuant to Health and Safety Code Section 116875, if the water flowing through a backflow prevention device is ultimately provided for human consumption, the device must be lead-free. Those selecting a device should be cognizant of this requirement and choose accordingly.

If you need additional assistance, please contact the Division of Drinking Water at (916) 449-5577.

Waterworks Standards

Capacity Development



Extremely Impaired Sources


Point of Use Treatment

Operator Certification

Recreational Use of Drinking Water Reservoirs

Safe Drinking Water Plan



More Information