BackflowNear Test-Due Reminder

1 Backflow Plumbing

Backflow testing. 5635 Anza St #3, San Francisco, CA 94121

2 utility approved lists
★ 5 155 Google reviews
100/100 BackflowNear score

Approvals

✓ On the San Francisco authorized testers✓ On the City of Palo Alto list Phone matches its Google profile
Certified testerCertificate
John Cook
Adrian Gilmore
and Thomas James Hood

Ask for the certificate number of the tester who will do your test, and check that your own water utility accepts reports from this company.

Call (415) 913-8941 Visit website More testers in California

Price reports

What a backflow test costs in San Francisco

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Published prices nationwide

$29.99 to $100 per assembly

Based on 14 published prices · Read Oct 2026 Prices testing businesses list on their own websites, from our cost guide. Listed prices, not what people paid.

Every published price, with its source: what a backflow test costs.

Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.

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Where you will find 1 Backflow Plumbing

These are the city pages close enough for this business to appear on.

Other backflow testers nearby

BusinessServicesDistance
C & L Plumbing IncBackflow Testing2 mi
Fast Response Plumbing and RooterBackflow Testing2 mi
AAA Backflow Testing LLCBackflow Testing3 mi
C.R. Reichel Engineering Co. Inc.Backflow Testing5 mi
Pacific Automatic Sprinkler Co.Backflow Testing5 mi
Ace Plumbing & RooterBackflow Testing5 mi

Questions about 1 Backflow Plumbing

Is 1 Backflow Plumbing approved to test backflow assemblies?

1 Backflow Plumbing is on the San Francisco authorized testers and City of Palo Alto list, as of August 14, 2026. That means the utility lets the company file backflow test reports in its system; it is not a state license. Ask for the tester's certificate number before the test.

What does 1 Backflow Plumbing do?

Their listing covers backflow testing. Call to confirm the service you need, because offerings change.

What areas does 1 Backflow Plumbing serve?

They are based in San Francisco, California, within driving distance of San Francisco, South San Francisco, San Rafael, Burlingame, Oakland. Service areas are set by the business, so confirm yours when you call.

How do I reach 1 Backflow Plumbing?

Call (415) 913-8941. Their website is linked on this page.

Compiled from public records and public business information. Not an endorsement. Check licensing before you hire.

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