Backflow testing & repair in San Bruno, CA
BackflowCare tests backflow prevention assemblies in San Bruno (San Mateo County) and files the results with City of San Bruno Water. San Bruno requires backflow devices where hazards exist and has them tested and maintained regularly in partnership with San Mateo County Environmental Health. If a device fails, we make minor repairs and file the passing retest with City of San Bruno.
- County
- San Mateo County
- Water supplier
- City of San Bruno Water
- Annual test
- City of San Bruno: owner hires a certified tester
- Our price
- $199 per device ($25 off for new customers), or from $180/year on a plan
- ZIP codes
- 94066
What City of San Bruno requires in San Bruno
- In the San Mateo County program, only a County-certified backflow tester may test assemblies.
- Assemblies must be tested at least once a year, and again after installation or repair.
- The tester sends the test report to County Environmental Health within 10 calendar days.
- Late testing can bring administrative fines of up to $500 per day, per assembly.
Source: City of San Bruno backflow program (official page), checked October 19, 2026.
Backflow questions from San Bruno property owners
Which water supplier serves San Bruno?
City of San Bruno Water supplies water in San Bruno (ZIP 94066) and runs its backflow program.
Who tests backflow devices for City of San Bruno customers in San Bruno?
San Bruno requires backflow devices where hazards exist and has them tested and maintained regularly in partnership with San Mateo County Environmental Health.
When is the backflow test due in San Bruno?
The tester sends the test report to County Environmental Health within 10 calendar days.
Does City of San Bruno charge its own fee in San Bruno?
Yes. Late testing can bring administrative fines of up to $500 per day, per assembly. That fee is separate from our $199 test price.