List of Certified Backflow Testers

The testers on this list have demonstrated their ability to field test Backflow Prevention Assemblies to the satisfaction of the District. Marin Water assumes no liability for the abilities, performance or quality of work performed by individuals listed. The company or individual utilizing the Backflow Prevention Assembly Tester should determine that the tester maintains liability insurance. 

WARNING: State law requires that any plumbing work exceeding $500 must be completed by a licensed contractor. 

Marin Water List of Certified Testers 

Revised Nov. 4, 2024 

C – Denotes this tester as a licensed contractor though the California Contractors State License Board

S – Denotes this tester is also a cross-connection specialist

Name EmailPhone OrganizationCert. No.
Ammons, Davidammonsbackflowcertifiedtesting@gmail.com(415) 712-4863Ammons Certified Backflow Testing18345
Anderson, WilliamCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists16734
Antognini, JeredCoffice@rhsons.com (800)675-3569RH Sons Water Service15737
Argall, GrierCgrierargall@gmail.com(415) 457-0748Grier Argall Plumbing17400
Atkinson, PatrickCoffice@miketestaplumbing.com (415) 479-0110Mike Testa Plumbing
16516
Baca, ElijahCservice@burkell.com(415) 332-3091Burkell Plumbing Inc. 19214
Barnhart, KyleCoffice@miketestaplumbing.com (415) 479-0110Mike Testa Plumbing15695
Bateman, JasonCcheckritebackflow@sonic.net(707) 575-5296Checkrite Backflow Service, Inc19294
Benett, John info@aaabft.com(415) 980-0635AAA Backflow Testing LLC15908
Brekhus, JakobCdan@dansmarinplumbing.com(415) 462-5858Dan’s Plumbing18769
Brinkerhoff, Aaron marinbackflow@gmail.com(415) 290-8070Marin Backflow06722
Campbell, Andrewsplitpea89@hotmail.com(408) 903-5115AC Backflow testing19411
Campos, MartinCservice@backflow-prevention.com(800) 434-3569Backflow Prevention Specialists19241
Christiansen, Charlesinfo@aaabft.com(415) 980-0635AAA Backflow Testing LLC19940
Cooper, EvanCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists12711
Cuevas, Jessecitycertifiedbackflow@gmail.com(209) 634-7766City Certified Backflow Prevention Inc.
15112
Daley, DonaldCoffice@miketestaplumbing.com(415) 479-0110Mike Testa Plumbing05779
Day, WayneCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists16119
De La Fuente, JamesCrcnerviani@gmail.com(415) 246-2343Nerviani’s Backflow Testing and Repair19239
Del Testa, DavidCrcnerviani@gmail.com(415) 246-2343Nerviani’s Backflow Testing and Repair17279
Delzer, MarkCservice@acmebayareabackflow.com(925) 484-8477ACME Bay Area Backflow16428
Diaz, OctavioCasti@astifireservices.com (707) 645-1782ASTI Services Inc.18084
Faulknor, MikeCcheckritebackflow@sonic.net(707) 575-5296Checkrite Backflow Service, Inc.17428
Femenia, JamesCoffice@pedrofemenia.com(415) 721-7473Pedro Femenia & Sons Plumbing6972
Femenia, KrisCoffice@pedrofemenia.com(415) 721-7473Pedro Femenia & Sons Plumbing16140
Fiero, TimCtony.devincenzi@marinmechanical.com(415) 485-4472Marin Mechanical II, Inc.20273
Fricke, ChrisCservice@burkell.com(415) 332-3091Burkell Plumbing15486
Gallagher, Robert service@abpbackflow.com(888) 356-7761Associated Backflow Professionals16440
Garcia, JoelC/Sbvbackflow@gmail.com(669) 689-3500Bay & Valley Backflow and Fire Services13661
Guntle, Bryan bgbackflowsvcs@gmail.com(707) 696-7010BG Backflow Testing14787
Haynes, CaseyCsteadbackflow@gmail.com(209) 327-3900Stead Backflow17097
Huls, JacobCoffice@rhsons.com(800) 675-3569RH Sons Water Services15869
Keddy, BrandonCcustomerservice@thebackflowguy.com(877) 384-3489The Backflow Guy, Inc.18290
Keddy, DannyCcustomerservice@thebackflowguy.com(877) 384-3489The Backflow Guy, Inc.15884
Majic, TomC/Sthebackflowpro@gmail.com(800) 511-2210The Backflow Pro11277/2041
McCreery, WilliamCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists18120
Medeiros, MattCthebackflowpro@gmail.com(800) 511-2210The Backflow Pro14788
Nemkovich, MaxC/Snemkovich@gmail.com(415) 368-3559Chris’ Plumbing12810/2166
Nerviani, RonCrcnerviani@gmail.com(415) 246-2343Nerviani’s Backflow Testing and Repair00057
Ochoa, ManuelCthebackflowpro@gmail.com (800) 511-2210
The Backflow Pro
18890
Oyen, Wyattrobertsonsbackflow@yahoo.com (530) 417-4084Robertson’s Backflow
19168
Padilla, AnthonyCcheckritebackflow@sonic.net(707) 575-5296Checkrite Backflow Service, Inc19022
Powell, Gavin gdpfirepro@gmail.com(209) 484-2718Greater Bay Backflow LLC17914
Real, KalebCdjsherin@backflowteam.com(888) 230-2747Backflow Team, LLC18088
Rios-Torres, FidelCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists18426
Robello, AaronCnorthbaybackflow@comcast.net(707) 484-3949Northbay Backflow12944
Romero, ReneCrene@romerolandscapes.com(209) 639-7017Romero’s Landscape18143
Ruvalcaba, SebastianCdani@gotelliplumbing.com(415) 457-1145Gotelli Plumbing Company20097
Salcido, Miguel salcidosbackflow@gmail.com(408) 561-3135Salcido’s Backflow Testing14894
Santens, TaraC/Sservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists08743
Schoop, CharlesCcheckritebackflow@sonic.net(707) 575-5296Checkrite Backflow Service, Inc06480
Schultz, PaulCpaul.schultz@cagwin.com(800) 891-7710Cagwin and Dorward10973
Shepherd, GregoryCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists12708
Sherin, Dave davesherin@backflowteam.com(888) 230-2747Backflow Team, LLC12131
Smith, HanselCdani@gotelliplumbing.com(415) 457-1145Gotelli Plumbing Company15962
Smith, SamuelCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists19249
Stallings, Bob info@415test.com(415) 894-0060415 Testing11786
Vennel, MichaelCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists07257
Wagner, AlexCoffice@rhsons.com(800) 675-3569RH Sons Water Services18037
Williams, IsaacCservice@backflow-prevention.com(800) 464-3569Backflow Prevention Specialists20096
Wise, JackCjack.wise@marinmechanical.com(415) 485-4472Marin Mechanical II, Inc13728
Woltz, WesCjguerra@matrixhginc.com(925) 459-9200Matrix HG Inc.17344
Woods, KennyCkennywoods@backflowteam.com(888) 230-2747Matrix HG Inc.17344