Master Plumbing
Backflow testing. 650 Vaqueros Ave, Sunnyvale, CA 94085
Approvals
Price reports
What a backflow test costs in Sunnyvale
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Published prices nationwide
$29.99 to $100 per assembly
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.
What Master Plumbing's website says
Services listed on Master Plumbing's website, read October 11, 2026: backflow testing, backflow installation and replacement, general plumbing, water heaters and drain and sewer service. masterplumbing.net, masterplumbing.net/about-master-plumbing, masterplumbing.net/contact-master-plumbing-quality-services-for-the-bay-area
| It says | Details | Page |
|---|---|---|
| Service area | San Mateo County; San Jose, San Francisco, Atherton, Belmont, Burlingame, Campbell, Cupertino, Daly City, East Palo Alto, Foster City, Fremont, Los Altos, Los Altos Hills, Los Gatos and Menlo Park and 9 more | masterplumbing.net |
| Licences, certifications, memberships | American Water Works Association (AWWA) | masterplumbing.net/about-master-plumbing |
Read on masterplumbing.net on October 11, 2026 (4 pages). This is what the business says about itself; we have not checked the credentials it names with the issuing body.
Where you will find Master Plumbing
These are the city pages close enough for this business to appear on.
- Sunnyvale, CA(1 mi)
- San Jose, CA(8 mi)
- Hayward, CA(17 mi)
- San Mateo, CA(19 mi)
- Pleasanton, CA(21 mi)
- Burlingame, CA(23 mi)
- San Leandro, CA(24 mi)
- South San Francisco, CA(27 mi)
Other backflow testers nearby
| Business | Services | Distance |
|---|---|---|
| Backflow Prevention Specialists, Inc. | Backflow Testing | 2 mi |
| Flow City Plumbing | Backflow Testing | 6 mi |
| United Mechanical | Backflow Testing | 7 mi |
| Silicon Valley Mechanical | Backflow Testing | 7 mi |
| 1-Hour Drain | Backflow Testing | 8 mi |
| Nickell Fire Protection Inc | Backflow Testing | 8 mi |
Questions about Master Plumbing
Is Master Plumbing approved to test backflow assemblies?
Master Plumbing is on the City of Milpitas 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 Master Plumbing do?
Their listing covers backflow testing. Call to confirm the service you need, because offerings change.
What areas does Master Plumbing serve?
They are based in Sunnyvale, California, within driving distance of Sunnyvale, San Jose, Hayward, San Mateo, Pleasanton. Its website names San Mateo County and San Jose, San Francisco, Atherton, Belmont, Burlingame and Campbell and 18 more places as areas it serves (read October 11, 2026).
How do I reach Master Plumbing?
Call (408) 945-1000. 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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