31 backflow testing businesses work within 25 miles of San Jose, 10 of them based in town. Every one is on the approved tester list of 11 water utilities.
Order is by our quality score, never by payment. How we verify listings.
Are you a backflow testing company near San Jose? One sponsor per county, clearly labelled. Sponsor this county
Price reports
Not enough reports yet for San Jose 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
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.
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 San Jose 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
31 backflow testing businesses are listed within 25 miles of San Jose. 10 are based in San Jose itself, 5 more within 15 miles and 16 further out, up to 25 miles away. Other towns with more than one listing: Pleasanton (4), Hayward (3) and Morgan Hill (2). The closest is SV Plumbing Inc., 1 mile from San Jose.
Every one is on the approved tester list of 11 water utilities.
San Jose Water. Who must test: Backflow devices are required on fire services and some domestic services, and testing and recordkeeping are required on all backflow preventers at least once a year.
24 of the 31 listed for San Jose have 3 or more Google reviews. Roto Rooter has the most reviews, 1,391, with an average of 4.8 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.
Related site: Testing a fire line? The sprinkler system behind it needs its own inspections by a state-licensed fire protection company. Licensed fire sprinkler inspectors near San Jose on FireInspectorNear, our sister directory.