Caccia Home Services
100/100 ✓ CA Utility-Approved Tester Verified ★ 4.9 (2182 reviews) 2 certified testersOn City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Approved backflow testers in South San Francisco, CA
43 backflow testing businesses work within 25 miles of South San Francisco, 2 of them based in town. Every one is on the approved tester list of 12 water utilities.
43 businesses within 25 miles
Backflow testing companies near South San Francisco
What the badges mean
- ✓ CA Utility-Approved Tester Verified On the city list
- The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
- 3 certified testers
- How many certified testers the roster lists at this business.
- ★ 4.8 (25 reviews)
- The Google rating, shown as Google reports it. It does not change the order.
Order is by our quality score, never by payment. How we verify listings.
Are you a backflow testing company near South San Francisco? One sponsor per county, clearly labelled. Sponsor this county
Flow Masters Plumbing
100/100 ✓ CA Utility-Approved Tester Verified ★ 5 (712 reviews) 2 certified testersOn San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Malcolm Plumbing & Mechanical
100/100 ✓ CA Utility-Approved Tester Verified ★ 4.8 (54 reviews) 2 certified testersOn San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
AAA Backflow Testing LLC
100/100 ✓ CA Utility-Approved Tester Verified ★ 5 (3 reviews) 2 certified testersOn San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
In and Out Plumbing
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.4 (167 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Pribuss Engineering
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.1 (7 reviews) On EBMUD listOn San Francisco authorized testersOn City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Steve Gotelli Plumbing Inc
90/100 ✓ CA Utility-Approved Tester Verified 2 certified testersOn San Francisco authorized testersOn City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Skaates Inc.
90/100 ✓ CA Utility-Approved Tester Verified ★ 3.5 (10 reviews) On San Francisco authorized testersOn City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.7 (1023 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Larratt Bros Plumbing, Inc.
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.8 (68 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Cornely Company
90/100 ✓ CA Utility-Approved Tester Verified ★ 5 (3 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Ros Plumbing
90/100 ✓ CA Utility-Approved Tester Verified ★ 5 (4 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Arch Plumbing Inc
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.9 (305 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Ayoob & Peery Plumbing Co.
90/100 ✓ CA Utility-Approved Tester Verified ★ 3.9 (7 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Dittmann Plumbing
90/100 ✓ CA Utility-Approved Tester Verified ★ 3.9 (21 reviews) On City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
C & L Plumbing Inc
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.6 (11 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Ace Plumbing & Rooter
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.9 (1179 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Brothers Energy Inc
90/100 ✓ CA Utility-Approved Tester Verified On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 4.9 (689 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Southwood Plumbing
80/100 ✓ CA Utility-Approved Tester Verified ★ 5 (8 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified ★ 1 (3 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Loral Landscaping
80/100 ✓ CA Utility-Approved Tester Verified ★ 3.1 (17 reviews) On City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ CA Utility-Approved Tester Verified On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
1 Backflow Plumbing
100/100 ✓ CA Utility-Approved Tester Verified ★ 5 (155 reviews) 3 certified testersOn San Francisco authorized testersOn City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Dale Plumbing
100/100 ✓ CA Utility-Approved Tester Verified ★ 3.9 (42 reviews) 2 certified testersOn City of Palo Alto list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Carrier Commercial Svcs
90/100 ✓ CA Utility-Approved Tester Verified ★ 1.8 (5 reviews) On EBMUD listOn San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Emcor Services Mesa Energy
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.5 (8 reviews) On San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
The Backflow Pro, Inc.
90/100 ✓ CA Utility-Approved Tester Verified On EBMUD listOn San Francisco authorized testersOn City of Napa listOn DSRSD listOn City of Pleasanton listOn City of Lathrop listOn City of Milpitas listOn Alameda County Water District listOn North Marin Water District listOn City of Palo Alto listOn City of Tracy listOn City of Petaluma list Backflow Testing
Verified Oct 2026 · Unclaimed listing
ACCO Engineered Sys
90/100 ✓ CA Utility-Approved Tester Verified ★ 4.3 (6 reviews) On EBMUD listOn San Francisco authorized testers Backflow Testing
Verified Oct 2026 · Unclaimed listing
Price reports
What a backflow test costs in South San Francisco
Not enough reports yet for South San Francisco to show a range. Be one of the first: it takes a minute and stays anonymous.
Published prices nationwide
$29.99 to $100 per assembly
$0$25$50$75$100$125
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.
Metro guide: Backflow testing in Oakland and San Francisco: every utility's rules, filing portals and published prices in one place.
Never miss your annual backflow test
Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in South San Francisco and we'll text you a month before it is due, with certified local testers ready to book.
Free. One text before your test is due. No spam, cancel anytime. Privacy
Backflow testing questions in South San Francisco
Where are the backflow testing businesses listed for South San Francisco based?
43 backflow testing businesses are listed within 25 miles of South San Francisco. 2 are based in South San Francisco itself, 29 more within 15 miles and 12 further out, up to 22 miles away. Other towns with more than one listing: San Francisco (16), San Leandro (4) and Hayward (3). The closest is In and Out Plumbing, under 1 mile from South San Francisco.
Which tester lists are the businesses near South San Francisco on?
Every one is on the approved tester list of 12 water utilities.
How many of the backflow testing businesses near South San Francisco have Google reviews?
34 of the 43 listed for South San Francisco have 3 or more Google reviews. Caccia Home Services has the most reviews, 2,182, with an average of 4.9 stars, as Google showed them at our last check.
Approved list: City of San Diego approved backflow testers, City of San Diego Public Utilities Department.
Approved list: Sweetwater Authority certified backflow testers, Sweetwater Authority.
Approved list: Cucamonga Valley Water District backflow assembly testers list, Cucamonga Valley Water District.
Approved list: Otay Water District approved backflow prevention assembly testers, Otay Water District.
Approved list: EVMWD backflow tester list, Elsinore Valley Municipal Water District.
Approved list: Ventura County certified backflow device tester list, County of Ventura Resource Management Agency.
Approved list: Yorba Linda Water District backflow prevention device testers, Yorba Linda Water District.
Approved list: Riverside Public Utilities backflow tester list, Riverside Public Utilities.
Approved list: City of Redlands backflow tester list (BSI), City of Redlands Municipal Utilities.
Approved list: Western Municipal Water District certified backflow prevention testers, Western Municipal Water District.
Approved list: Rancho California Water District approved backflow testers, Rancho California Water District.
Approved list: Sacramento County certified backflow prevention assembly testers, Sacramento County Environmental Management Department.
Approved list: Olivenhain Municipal Water District certified backflow prevention assembly testers, Olivenhain Municipal Water District.
Approved list: EBMUD approved backflow testers, East Bay Municipal Utility District.
Approved list: Irvine Ranch Water District backflow tester list, Irvine Ranch Water District.
Approved list: San Francisco authorized backflow assembly testing companies, San Francisco Department of Public Health.
Approved list: Padre Dam Municipal Water District approved backflow tester list, Padre Dam Municipal Water District.
Approved list: DSRSD backflow tester list, Dublin San Ramon Services District.
Approved list: City of Palo Alto approved backflow testers, City of Palo Alto Utilities.
Approved list: City of Pleasanton approved backflow prevention testers, City of Pleasanton Water.
Approved list: Certified Backflow Prevention Device Testers, Los Angeles County Public Health.
Approved list: Casitas Municipal Water District approved certified backflow device testers, Casitas Municipal Water District.
Approved list: City of Milpitas qualified backflow prevention assembly testers, City of Milpitas.
Approved list: City of Tracy approved backflow testers, City of Tracy Public Works.
Approved list: City of Long Beach backflow prevention testers, Long Beach Health.
Approved list: City of Ceres certified backflow tester list, City of Ceres.
Approved list: City of Petaluma city certified backflow testers, City of Petaluma.
Approved list: City of Clovis certified backflow testers, City of Clovis Public Utilities.
Approved list: Goleta Water District certified backflow tester listing, Goleta Water District.
Approved list: City of Napa certified backflow prevention testers, City of Napa Utilities.
Approved list: La Puente Valley County Water District approved list of backflow testers, La Puente Valley County Water District.
Approved list: Alameda County Water District approved backflow prevention testers, Alameda County Water District.
Approved list: West Valley Water District backflow tester list, West Valley Water District.
Approved list: Rainbow Municipal Water District certified backflow vendor list, Rainbow Municipal Water District.
Approved list: City of Lathrop approved backflow testers, City of Lathrop Public Works.
Approved list: North Marin Water District backflow assembly tester list, North Marin Water District.
Approved list: Calaveras County Water District recognized BPA testers, Calaveras County Water District.
Approved list: Diablo Water District list of certified backflow testers, Diablo Water District.
Approved list: Forestville Water District approved certified backflow device testers, Forestville Water District.
Keep looking
- Burlingame, CA(4 mi)
- San Francisco, CA(7 mi)
- San Mateo, CA(8 mi)
- Oakland, CA(14 mi)
- San Leandro, CA(14 mi)
- Hayward, CA(18 mi)
- San Rafael, CA(22 mi)
- Hercules, CA(26 mi)
- Sunnyvale, CA(28 mi)
- Pleasanton, CA(30 mi)