Backflow testing & repair in Pacifica, CA
BackflowCare tests backflow prevention assemblies in Pacifica (San Mateo County) and files the results with North Coast County Water District. North Coast County Water District uses San Mateo County’s list of certified backflow testers and the County’s test form for its program. If a device fails, we make minor repairs and file the passing retest with North Coast County Water.
- County
- San Mateo County
- Water supplier
- North Coast County Water District
- Annual test
- North Coast County Water: owner hires a certified tester
- Our price
- $199 per device ($25 off for new customers), or from $180/year on a plan
- ZIP codes
- 94044
What North Coast County Water requires in Pacifica
- 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: North Coast County Water backflow program (official page), checked October 19, 2026.
Backflow questions from Pacifica property owners
Which water supplier serves Pacifica?
North Coast County Water District supplies water in Pacifica (ZIP 94044) and runs its backflow program.
Who tests backflow devices for North Coast County Water customers in Pacifica?
North Coast County Water District uses San Mateo County’s list of certified backflow testers and the County’s test form for its program.
When is the backflow test due in Pacifica?
The tester sends the test report to County Environmental Health within 10 calendar days.
Does North Coast County Water charge its own fee in Pacifica?
Yes. Late testing can bring administrative fines of up to $500 per day, per assembly. That fee is separate from our $199 test price.