In and Out Plumbing
Backflow testing. 184 Harbor Wy, South San Francisco, CA 94080
Approvals
| Certified tester | Certificate |
|---|---|
| Alexander Abas |
Price reports
What a backflow test costs in South San Francisco
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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 In and Out Plumbing's website says
Services listed on In and Out Plumbing's website, read October 11, 2026: general plumbing, water heaters and drain and sewer service. inandoutplumbing.com
| It says | Details | Page |
|---|---|---|
| Service area | San Mateo County; South San Francisco, San Francisco, Alameda, Albany, Atherton, Belmont, Belvedere, Tiburon, Berkeley, Brisbane, Burlingame, Castro Valley, Corte Madera, Daly City and El Cerrito and 17 more | inandoutplumbing.com |
| 24-hour service | Offered, it says | inandoutplumbing.com |
| Founding year | In business since 1999 | inandoutplumbing.com |
| Licences, certifications, memberships | Licensed plumbers | inandoutplumbing.com |
Read on inandoutplumbing.com on October 11, 2026 (5 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 In and Out Plumbing
These are the city pages close enough for this business to appear on.
- South San Francisco, CA(under 1 mi)
- Burlingame, CA(4 mi)
- San Francisco, CA(7 mi)
- San Mateo, CA(8 mi)
- Oakland, CA(13 mi)
- San Leandro, CA(14 mi)
- Hayward, CA(17 mi)
- San Rafael, CA(23 mi)
Other backflow testers nearby
| Business | Services | Distance |
|---|---|---|
| Pribuss Engineering | Backflow Testing | 1 mi |
| Southwood Plumbing | Backflow Testing | 1 mi |
| Steve Gotelli Plumbing Inc | Backflow Testing | 3 mi |
| Caccia Home Services | Backflow Testing | 4 mi |
| Skaates Inc. | Backflow Testing | 4 mi |
| Flow Masters Plumbing | Backflow Testing | 5 mi |
Questions about In and Out Plumbing
Is In and Out Plumbing approved to test backflow assemblies?
In and Out Plumbing is on the San Francisco authorized testers, 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 In and Out Plumbing do?
Their listing covers backflow testing. Call to confirm the service you need, because offerings change.
What areas does In and Out Plumbing serve?
They are based in South San Francisco, California, within driving distance of South San Francisco, Burlingame, San Francisco, San Mateo, Oakland. Its website names San Mateo County and South San Francisco, San Francisco, Alameda, Albany, Atherton and Belmont and 26 more places as areas it serves (read October 11, 2026).
How do I reach In and Out Plumbing?
Call (650) 750-9595. 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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