City of Fresno Department of Public Utilities: backflow testing rules

City of Fresno Department of Public Utilities at a glance

When the test is due

The city administers annual testing of every installed backflow preventer; RPP and double check assemblies are the two types it most often requires. Source.

How the report is filed

Fresno sends backflow testing questions to BSI Online, the third party tracking service, at (800) 414-4990. Source.

If a test is missed

A failed RPP device is repaired by qualified testing agencies or Water Division staff, but a device found beyond repair must be replaced by the owner. Source.

Approved testers

No tester list on the City of Fresno Department of Public Utilities pages read here. Ask a California certified tester whether City of Fresno Department of Public Utilities has them on file.

Who must test

• The Backflow section of the Water Division manages more than 9,700 devices, and annual tests are mandated to confirm each one works. Source.

Program

• Through its Cross Connection Control program, Fresno's Water Division plans, installs and maintains backflow devices. The city counted 10,284 backflow devices installed as of October 14, 2024. Source.

From notice to filed report, the steps are the same everywhere: how a backflow test goes.

Other water utilities in California

• Los Angeles Department of Water and Power
• East Bay Municipal Utility District
• City of San Diego Public Utilities Department
• San Jose Water
• Long Beach Utilities
• Burbank Water and Power
• City of Modesto Utilities
• City of Santa Ana Water Resources

Read October 7, 2026. Program page: fresno.gov.

Backflow testers near Fresno

What the badges mean

All testers near Fresno · California roster