Tests in San Francisco must be done by a tester authorized under Article 12A of the Health Code. SFPUC points the live roster to sf.gov/backflow. The January 9, 2025 PDF is not the current file; this snapshot is the HTML list dated Friday, August 14, 2026.
Official program page Official list on sf.gov/backflow (dated August 14, 2026)
Every company below is copied from the SFDPH authorized-tester page. Companies are listed as printed, with the testers named on that page.
The official file does not mark fire-line testers. This page does not invent a fire-line flag.
81 companies
| Company | Phone |
|---|---|
| #1 Backflow TestingJohn Benett, Benjamin Strain | 415-317-7184 |
| #1 Castle Care Backflow TestingMark Delzer, Abed Sarari | 415-770-0734 |
| 1 Backflow PlumbingJohn Cook, Adrian Gilmore, and Thomas James Hood | 415-913-8941 |
| 123 Bay BackflowVadim Kogan | 415-525-9940 |
| 415 Backflow TestingBob Stallings | 415-894-0060 |
| 4th of July Backflow TestingAlondra Haro, Sergio Villegas | 831-578-1549 |
| 24/7 Rooter & Plumbing ServicesWilliam Mendieta | 415-586-6851 |
| A Plus Back Flow LLCCharles Christiansen | 510-519-1510 |
| AA Precision BackflowBob Stallings | 415-894-0060 |
| AAA Backflow Prevention ServiceJordan Lee | 877-226-3569 |
| AAA Backflow Testing LLCJohn Benett, Ben Strain | 415-535-1332 |
| ACCO Engineered SystemsJoshua Edwards, Mike Kavanaugh | 800-598-2226 |
| ACE Backflow Testing & RepairAdam Eddy | 510-808-5760 |
| Ace Plumbing & RooterWilliam Douglass | 415-824-6333 |
| Acme Bay Area Backflow, Inc.Mark Delzer, Jonathan Maldonado | 415-712-4782 |
| Agile Backflow SolutionsShane Sablan | 510-432-6788 |
| Alansi’s Rooter & PlumbingYehia Alansi | 415-497-8700 |
| American Water Heater Service, IncJoseph Jette, Manuel Ochoa | 510-490-4411 |
| Arch Plumbing IncJorge Macias | 415-375-0302 |
| Argo Backflow PreventionClement Ng | 650-504-8926 |
| ASTI ServicesRuben Cruz, Octavio Diaz | 707-645-1782 |
| Ayoob & Peery Plumbing Co.Nicholas Tuite | 415-550-0975 |
| Backflow Prevention Specialists, Inc.William Anderson, Benjamin Bennett, Evan Cooper, Wayne Day, Christian Gonzales, William McCreery, Steven Mendoza, Fidel Rios, Tara Santens, Greg Shepherd, Gabriel Silva, Michael Venell, and Isaac Williams | 408-734-3569 |
| Backflow Team, LLCKaleb Real, Dave Sherin, David Sherin Jr., Leslie Sherin, Kenny Woods, and Tyler Dixon | 888-230-2747 |
| Bay and Valley Backflow ServicesJoel Garcia | 800-671-4129 |
| Bay Area Backflow Inc.Chris Dufur, Josh Dufu | 650-212-2435 |
| Bay Area Backflow SVC.Frank Phillips | 925-625-9456 |
| Bay Area Mechanical and Engineering, Inc.Jack Berzin | 415-822-1516 |
| Better Cost Backflow ServiceKenny Chan | 415-568-7770 |
| Brothers Energy IncHector Ramos | 855-243-9556 |
| C & L Plumbing IncAllen Chen | 415-816-0936 |
| C.R. Reichel Engineering Co. Inc.Mario Rodriguez | 415-431-7100 |
| Carrier CorporationJuan Carlos Zamudio | 510-347-2000 |
| Central Boilers and HeatingEdwin Barahona | 510-381-8705 |
| Chris’ PlumbingMax Nemkovich | 415-368-3559 |
| City Certified Backflow Prevention, IncJesse Cuevas | 800-684-8346 |
| City Mechanical, Inc.Peter Chan, Jehova Delgado | 510-724-9088 |
| Clog Buster Plumbing, Inc.Joseph Manuel | 650-993-4652 |
| Cornely CompanyJohn Benett | 415-252-1800 |
| Discount PlumbingOmar Guzman | 650-991-2100 |
| Discount Plumbing & Rooter CoOrce Naumovski | 650-333-8105 |
| Emcor Services Mesa EnergyKyle Baranbo | 510-670-1690 |
| Evergreen LandscapesErik Rivera, Juan Rivera | 415-519-1412 |
| Fast Response Plumbing and RooterJoseph Tinsley | 415-596-6115 |
| Finnerty PlumbingNoel Finnerty | 415-225-6918 |
| Fire Solutions NW LLCJosh Fitzpatrick | 855-876-3473 |
| Flow Masters PlumbingJohn Benett, Ben Strain | 415-751-1933 |
| Greater Bay Backflow, LLCGavin Powell | 209-484-2718 |
| Guerra Bros. Plumbing, Inc.Austin Ray Guerra, Vincente Louis Jr. Quilantang | 925-288-0409 |
| Hetherington General & Plumbing ContractorsMan Shing Chu, Ben Hetherington, William Hetherington | 415-750-9595 |
| In and Out PlumbingAlexander Abas | 650-750-9595 |
| Interlock PlumbingAnthony Lorencillo | 415-335-5569 |
| JE Brown CompanyJameson Delatorre, Craig Kaechele, Joshua Wilson | 415-626-4044 |
| L. J. Kruse CompanyMiguel Ferrusquia, Richard Lerch. John McCauley | 510-644-0260 |
| Larratt Bros Plumbing, Inc.Brandon Dillon | 650-873-5794 |
| Lescure Co.Mitch Wiley, Philip Doolittle, Albert Lorenzetti | 925-283-2528 |
| Malcolm Plumbing & MechanicalJeul De Leon, and Robert Sandoval | 415-621-1985 |
| Marin MechanicalTimothy J Fiero | 415-485-4472 |
| Matrix HG, Inc.Ramon Gonzales, Marc Hess, James Perez, and Jeremy Watkins | 925-459-9200 |
| Pacific Automatic Sprinkler Co.Mitchell Lee | 415-254-3076 |
| Pedro Femenia & Sons PlumbingJames Femenia, Kristofer Femenia | 415-721-7473 |
| Peninsula Fire Inc.Gavin Powell | 877-347-3991 |
| Premium Fire SprinklersRudolph Palacios | 408-544-9957 |
| Pribuss Engineering, Inc.Michael Kavanaugh, Edgard Orozco, Ryan Joseph Gonterman, and Eduardo Pena | 650-588-0447 |
| REM Boiler & PlumbingBob Stallings | — |
| Robertsons BackflowClint Robertson and Ethan Terrazas | 530-306-1056 |
| Ros PlumbingNiall Dolan | 415-505-2180 |
| Roy Coto PlumbingRoy Coto | 415-370-9001 |
| Salcido’s Backflow ServicesMiguel Salcido | 408-561-3135 |
| SB Works SFSean Brantigan | 415-840-4555 |
| SF Plumbing and RooterGeorge Ghannam | 415-431-3527 |
| Skaates Inc.Mike Harrington | 650-347-1794 |
| Southwood PlumbingDenis O’Halloran | 650-756-5325 |
| Steve Gotelli Plumbing IncSteve Gotelli and Tara Murphy | 415-468-8880 |
| T. MurphyTara Murphy | 408-529-0000 |
| The Backflow Guy, INC.Rodney Andrade, Brandon Keddy, Danny Keddy, Peter Weiss | 877-384-3489 |
| The Backflow Pro, INC.Jesse Cuevas, Tomislav Majic, Matthew Medeiros | 800-511-2210 |
| The Steam and Hot Water CompanyDavid Cardoza | 415-900-6254 |
| Therma, LLC.Matthew Burke, Alexis Chavez, Josh Gilbert, Rodolfo Hurtado | 408-347-3400 |
| Thorpe Design, Inc.Jacob Castillo | 925-634-5758 |
| United Mechanical Inc.Russell Brugioni | 408-232-9000 |
No rows match that search.