CMS Plumbing, Inc., Campbell, CA: Backflow Testing

Approvals

✓ On the City of Milpitas list✓ On the City of Palo Alto list Phone matches its Google profile

City of Milpitas qualified backflow prevention assembly testers, as of April 30, 2026. Being on this list means the utility lets the company file backflow test reports in its water system; it is not a state license.
City of Palo Alto approved backflow testers, as of August 10, 2026. Being on this list means the utility lets the company file backflow test reports in its water system; it is not a state license.

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 (408) 687-7934 Visit website More testers in California

Price reports

What a backflow test costs in Campbell

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Published prices nationwide

$29.99 to $100 per assembly

$0$25$50$75$100$125

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.

Where you will find CMS Plumbing, Inc.

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

Other backflow testers nearby

Business	Services	Distance
O.C. McDonald Co.	Backflow Testing	3 mi
Burr Plumbing and Pumping Inc	Backflow Testing	4 mi
Silicon Valley Home Services	Backflow Testing	4 mi
Flow City Plumbing	Backflow Testing	5 mi
Nickell Fire Protection Inc	Backflow Testing	6 mi
1-Hour Drain	Backflow Testing	6 mi

Questions about CMS Plumbing, Inc.

Is CMS Plumbing, Inc. approved to test backflow assemblies?

CMS Plumbing, Inc. is on the City of Milpitas list and City of Palo Alto list, as of April 30, 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 CMS Plumbing, Inc. do?

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

What areas does CMS Plumbing, Inc. serve?

They are based in Campbell, California, within driving distance of San Jose, Sunnyvale, Morgan Hill, Hayward, Gilroy. Service areas are set by the business, so confirm yours when you call.

How do I reach CMS Plumbing, Inc.?

Call (408) 687-7934. 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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