Find a Tester to Call

Every tester below comes from the Oregon Health Authority's public list of certified Backflow Assembly Testers and serves Multnomah, Washington, or Clackamas county. Tap to call one directly to schedule your test. Inclusion on this list is voluntary — not every certified tester appears here, and appearing here is not an endorsement. We are not affiliated with OHA or the Portland Water Bureau.

Last updated from the OHA public list on July 6, 2026.

Showing 162 of 162 certified testers

1-800-Plumber & Air/MEP Pros Inc.
Aron S. McNamee
Beaverton · Washington Co.
OHA cert BAT-398502
Call 503-676-3449
3Kallecks Home Services
Troy C. Kalleck
Sherwood · Washington Co.
OHA cert BAT-4723
Call 971-226-3414
A 2 Z Backflow
Michael D. Hoilien
McMinnville · Washington Co., Clackamas Co.
OHA cert BAT-673220
Call 503-560-3830
A-Absolute Comfort
Trevor R. Hill
Oregon City · Clackamas Co.
OHA cert BAT-572968
Call 360-726-9642
A&E Backflow Testing LLC
Eric R. Nealeigh
Milwaukie · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-6416
Call 971-228-2849 Visit website
Abel Irrigation & Lighting
Ryan D. Everson
Portland · Multnomah Co.
OHA cert BAT-6755
Call 503-244-2146
Access Backflow Testing & Repair
Jordan T. Ashland
Woodburn · Washington Co., Clackamas Co.
OHA cert BAT-066108
Call 503-318-1184
Accurate Backflow
Richard E. Vanderkin
Forest Grove · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-008094
Call 503-357-1444
Accurate Backflow
Alex T. Vanderkin
Forest Grove · Washington Co.
OHA cert BAT-194759
Call 503-357-1444
Ace Construction & Mechanical Inc
Alan C. Emami
Tualatin · Washington Co.
OHA cert BAT-789251
Call 503-816-9757
Ace Construction & Mechanical Inc
Austin A. Emami
Tualatin · Washington Co.
OHA cert BAT-424936
Call 503-887-6477
Advanced Irrigation Systems
Vince Kinman
Portland · Multnomah Co.
OHA cert BAT-3284
Call 503-253-0033
Affordable Inspections LLC
Josh Tucker
Forest Grove · Washington Co.
OHA cert BAT-547529
Call 855-802-1919
Alexander R. Barr
Molalla · Clackamas Co.
OHA cert BAT-415478
Call 503-858-3683
Alfredo Cibrian-Sandoval
Portland · Multnomah Co.
OHA cert BAT-5525
Call 503-209-9748
All Seasons & Aloha Backflow Inc
Bill Ellis
Beaverton · Washington Co.
OHA cert BAT-3758
Call 503-649-2721
All Star Fire Protection & Backflow Serv
David K. Brune
Boring · Clackamas Co.
OHA cert BAT-167939
Call 503-349-0771
Alpha & Omega Construction
Samuel A. Andras
Oregon City · Clackamas Co.
OHA cert BAT-658080
Call 971-331-6484
American Backflow & Plumbing Services
Michael J. Younce
Portland · Multnomah Co.
OHA cert BAT-4019
Call 877-950-2468 Visit website
American Backflow & Plumbing Services
Joshua D. Blacker
Portland · Multnomah Co.
OHA cert BAT-5313
Call 877-950-2468 Visit website
American Backflow & Plumbing Services
Owen H.P. Johnston
Portland · Multnomah Co.
OHA cert BAT-256834
Call 877-950-2468 Visit website
American Backflow & Plumbing Services
Skyler A. Hoyt
Portland · Multnomah Co.
OHA cert BAT-930492
Call 877-950-2468 Visit website
American Backflow & Plumbing Services
Smith A. Garcia-Santos
Portland · Multnomah Co.
OHA cert BAT-403787
Call 971-712-3387
American Backflow & Plumbing Services
Joel Flores-Leal
Portland · Multnomah Co.
OHA cert BAT-89321
Call 971-712-3274
American Backflow & Plumbing Services, I
Myles C. Diehl
Portland · Multnomah Co.
OHA cert BAT-427783
Call 877-950-2468
American Backflow & Plumbing Services, I
Trevor A. Taylor
Portland · Multnomah Co.
OHA cert BAT-877061
Call 877-950-2468 Visit website
American Backflow & Plumbing Services, I
Jeremy Case
Portland · Multnomah Co.
OHA cert BAT-442940
Call 877-950-2468 Visit website
American Backflow & Plumbing Services, I
James A. Chayanam
Portland · Multnomah Co.
OHA cert BAT-791727
Call 877-950-2468 Visit website
AMERICAN BACKFLOW SERVICES
Kyle Harms
Portland · Multnomah Co.
OHA cert BAT-4486
Call 503-289-1745
American Plumbing Services
Colby R. Jones
Portland · Multnomah Co.
OHA cert BAT-500817
Call 360-980-3366
Anderson: Backflow, Irrigation, & OD Lig
Mark D. Anderson
Oregon City · Multnomah Co., Washington Co.
OHA cert BAT-3823
Call 503-849-4700 Visit website
Anderson: Backflow, Irrigation, & OD Lig
Roscoe J. Anderson
Woodburn · Washington Co., Clackamas Co.
OHA cert BAT-630037
Call 503-849-5462 Visit website
Andrew L. Cornils
Gaston · Washington Co.
OHA cert BAT-289882
Call 503-347-3026
Aqua Tech
Richard D. Bricker
Portland · Multnomah Co.
OHA cert BAT-5696
Call 971-570-4039
Austin P. Gallagher
Portland · Multnomah Co.
OHA cert BAT-5725
Call 503-236-6141
B&G Excavation and Plumbing, LLC
Robert Umemoto
Damascus · Clackamas Co.
OHA cert BAT-255454
Call 503-761-2038
Backflow Prevention Device Testing
Gregory Douglas
Tualatin · Washington Co.
OHA cert BAT-2708
Call 503-692-2885
Backflow Professionals
Michael P. Hansen
Gladstone · Washington Co., Clackamas Co.
OHA cert BAT-010853
Call 503-956-4742
Basic Fire Protection
Josh Johnson
Portland · Multnomah Co.
OHA cert BAT-175423
Call 503-285-1855
Basic Fire Protection Inc
Rick Byer
Portland · Multnomah Co.
OHA cert BAT-4684
Call 503-285-1855
BDL Plumbing
Austin D. Graff
Corbett · Multnomah Co.
OHA cert BAT-578013
Call 971-219-6285
Be Right Backflow
Casey D. Sims
Portland · Washington Co.
OHA cert BAT-927300
Call 503-893-9371
Beavercreek Backflow LLC
Matthew V. Kaatz
Beavercreek · Clackamas Co.
OHA cert BAT-6310
Call 503-349-6573 Visit website
Becks Botanical, Inc
Brent T. Beck
Wilsonville · Clackamas Co.
OHA cert BAT-6307
Call 503-341-3980
Beeline Backflow
Rachel Beebe
McMinnville · Washington Co.
OHA cert BAT-4406
Call 503-260-3453 Visit website
Beeline Backflow
Jacob L. Warren
Hillsboro · Washington Co.
OHA cert BAT-5682
Call 503-260-3453 Visit website
Bennett Irrigation & Backflow Services
Paul Bennett
Milwaukie · Clackamas Co.
OHA cert BAT-4891
Call 503-951-5525
Bens Backflow, LLC
Benjamin K. Enebo
Eagle Creek · Clackamas Co.
OHA cert BAT-6622
Call 503-351-0266
Billygoat Landscaping
Michael A. Swanzy
Portland · Multnomah Co.
OHA cert BAT-6008
Call 541-357-0199 Visit website
Blessing Landscapes LLC
David C. Dillon
Portland · Multnomah Co.
OHA cert BAT-6541
Call 503-284-3557
Brandon L. Hay
Hillsboro · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-933204
Call 971-235-6015
Brent A. Handley
Sherwood · Washington Co.
OHA cert BAT-610676
Call 714-277-6549
Brewster N Sons, LLC
Ashley M. Brewster
Dufur · Multnomah Co.
OHA cert BAT-369963
Call 541-980-5609
Bruton Backflow & Irrigation, LLC
Matthew B. Bruton
Fairview · Multnomah Co.
OHA cert BAT-3791
Call 503-618-1806
Bruton Backflow and Irrigation
Richard T. Bruton
Fairview · Multnomah Co.
OHA cert BAT-4535
Call 503-618-1806
Bruton Backflow and Irrigation
Nathaniel D. Miller
Fairview · Multnomah Co.
OHA cert BAT-951260
Call 206-290-6961
C & D Landscape Services Co.
Julian A. Urena
Dayton · Washington Co.
OHA cert BAT-520455
Call 503-864-3551
Carlos J. Pena
Oregon City · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-118304
Call 603-438-4822 Visit website
Cascade Mechanical Systems
Herbert S. Carson
Estacada · Clackamas Co.
OHA cert BAT-565267
Call 503-875-4701
Cascadia Landscaping LLC
Jhovany Arellano-Sanchez
Beaverton · Washington Co.
OHA cert BAT-749452
Call 503-739-3314
Casey D. Madsen
Stayton · Clackamas Co.
OHA cert BAT-646770
Call 503-897-6500
Castle Renovations, LLC
Christopher L. Wagner
Oregon City · Clackamas Co.
OHA cert BAT-416570
Call 503-888-3372
Centurion Fire Protection
Brent T. Barker
Oregon City · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-6130
Call 503-894-0563
Centurion Fire Protection
Jill E. Barker
Oregon City · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-636270
Call 503-593-9791
Cesar Barajas-Varagas
Cesar Barajas-Vargas
Cornelius · Washington Co.
OHA cert BAT-444478
Call 971-470-5508
Clearwater Backflow Testing Services
Jordan J. Scott
Portland · Multnomah Co.
OHA cert BAT-5336
Call 503-703-7821
CRM Backflow
Brian T. Kromer
Canby · Clackamas Co.
OHA cert BAT-038118
Call 503-421-1013
Crouchley Plumbing Co
Tracey A. Miller
Portland · Multnomah Co.
OHA cert BAT-5365
Call 503-286-4431
David R. Thurston
Portland · Multnomah Co.
OHA cert BAT-685119
Call 971-237-7258
Dennis 7 Dee's Landscaping
Earl S. Shook
Portland · Clackamas Co.
OHA cert BAT-4212
Call 503-777-7777
DETEMPLE COMPANY INC
Richard A. Ortiz
Milwaukie · Clackamas Co.
OHA cert BAT-543650
Call 503-849-8115
DETEMPLE COMPANY INC
Nicholas Wolfe
Milwaukie · Clackamas Co.
OHA cert BAT-303422
Call 503-703-9402
Drakes 7 Dees
Paul W. Marshall
Portland · Multnomah Co.
OHA cert BAT-3756
Call 503-256-2223
Dynamic Backflow
Kevin Krajewski
Wilsonville · Clackamas Co.
OHA cert BAT-5119
Call 971-983-9456
Eric R. Towner
Weiser · Washington Co.
OHA cert BAT-6514
Call 208-549-1073
Ernest Landscaping LLC
Gabriel Tera Palomares
Hillsboro · Washington Co.
OHA cert BAT-438908
Call 971-708-8126
Ezequiel Vasquez
Woodburn · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-689863
Call 971-322-8548
Farr Better Backflow Testing LLC
Tyler F. Robinson
Boring · Clackamas Co.
OHA cert BAT-5799
Call 503-475-9080 Visit website
Farr Better Backflow Testing LLC
Cole R. Robinson
Boring · Clackamas Co.
OHA cert BAT-401084
Call 503-475-9080 Visit website
Felix J. Pagan
Troutdale · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-509012
Call 503-395-3996
Flow Forward
Melissa J. Schmeer
West Linn · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-403645
Call 971-666-0985 Visit website
Flowcheck LLC
Luis Reyes
Hillsboro · Multnomah Co.
OHA cert BAT-347588
Call 503-444-1148
Flowcheck, LLC
Robert M. Jones
Hillsboro · Washington Co.
OHA cert BAT-6028
Call 503-444-1148
Freedom Sprinklers
Matthew A. Erickson
Weiser · Washington Co.
OHA cert BAT-682795
Call 208-972-9770
Gardenview Landscape Irrigation & Mainte
Jesus Gonzalez
Hillsboro · Washington Co.
OHA cert BAT-3886
Call 503-693-6823
Green Growth Landscape Maintenance
Uriel Cruz-Salgado
Aurora · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-861086
Call 503-710-1691
Green Leaf Irrigation & Landscape
Eric Whittier
Portland · Multnomah Co.
OHA cert BAT-228743
Call 503-360-4224
Green Leaf Irrigation & Landscape
Ida C. Sullivan
Portland · Multnomah Co.
OHA cert BAT-353003
Call 503-318-9873
Green Leaf Irrigation & Landscaping
Steven M. Patarozzi
Portland · Multnomah Co.
OHA cert BAT-3625
Call 503-360-4224
Hayward Plumbing
Lowell O. Hayward
Woodburn · Washington Co.
OHA cert BAT-62575
Call 503-878-9265
Jake W. Knutson
Canby · Clackamas Co.
OHA cert BAT-881430
Call 503-351-3216
Jeremiah Barton
Hillsboro · Washington Co.
OHA cert BAT-307014
Call 971-444-2579
JH KELLY
Robert S. Adam
Milwaukie · Clackamas Co.
OHA cert BAT-4699
Call 503-656-7400 Visit website
Joseph Galati
Portland · Multnomah Co.
OHA cert BAT-63573
Call 877-950-2468 Visit website
K T Landscaping, Inc
Kerry Tweit
La Grande · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-5314
Call 541-786-5050
Karlo Ramirez-Moreno
Wilsonville · Clackamas Co.
OHA cert BAT-439334
Call 503-939-2094
Kenneth L. Pisano
Portland · Multnomah Co.
OHA cert BAT-008237
Call 503-758-3255
Kolyn M. McConachie
Portland · Multnomah Co.
OHA cert BAT-799109
Call 971-400-5927
Landscape East & West
David W. Been
Clackamas · Washington Co.
OHA cert BAT-2551
Call 503-256-5302
Lawn & Irrigation Technologies NW
Brady Brewster
Hillsboro · Washington Co.
OHA cert BAT-146484
Call 971-329-6343
Lenny's Sprinkler & Lighting Service
Patrick R. Smith
Beaverton · Washington Co.
OHA cert BAT-5819
Call 503-403-9446
Lenny's Sprinkler & Lighting Services
Lenny R. Cook
Beaverton · Washington Co.
OHA cert BAT-4206
Call 503-403-9446
Leonard's Plumbing Co.
Yevgeniy L. Skobelev
Damascus · Multnomah Co.
OHA cert BAT-567697
Call 503-367-8724
Lively Backflow Testing
Jerrold L. Lively
Portland · Multnomah Co.
OHA cert BAT-6440
Call 360-773-8749
M&E Backflow Consulting
Monty L. Graham
Salem · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-6294
Call 503-347-1107
Matthew J. Zinzer
Tualatin · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-759253
Call 503-406-8233
Max Plumbing Service
Jason P. Horner
Cornelius · Washington Co.
OHA cert BAT-355217
Call 971-275-0198
Metro Safety & Fire, Inc
Joavauni C. Loberg
Portland · Multnomah Co.
OHA cert BAT-980222
Call 503-231-2999
Michael A. Warford
Oregon City · Clackamas Co.
OHA cert BAT-4004
Call 503-406-8572
Michael S. Gallagher
Portland · Multnomah Co.
OHA cert BAT-5724
Call 503-235-6141
MP PLUMBING
Steven Ackerman
Clackamas · Clackamas Co.
OHA cert BAT-1128
Call 503-655-9161
MP PLUMBING
Eugene G. Mason
Clackamas · Clackamas Co.
OHA cert BAT-4117
Call 503-631-3947
MP PLUMBING CO
Austin Taylor
Clackamas · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-496210
Call 503-655-9161
Nathan J. Bernert
Canby · Clackamas Co.
OHA cert BAT-445823
Call 503-432-7905
New Life Landscape, LLC
Marshall D. King
Hillsboro · Multnomah Co., Washington Co.
OHA cert BAT-983229
Call 503-313-0115
Nicholas C. Heppes
Oregon City · Clackamas Co.
OHA cert BAT-676259
Call 971-280-2675
Nicholas N. Nakashima
Portland · Multnomah Co.
OHA cert BAT-958352
Call 877-950-2468 Visit website
North West Plumbing & Backflow Inc.
Robert S. Petersen
Clackamas · Clackamas Co.
OHA cert BAT-4063
Call 503-488-0773
Nu Fire Sprinkler Co LLC
Joseph A. Durbin
Boring · Clackamas Co.
OHA cert BAT-189947
Call 503-358-1034
NW Maintenance & Electrical Services
Luis A. Huertas
Newberg · Washington Co.
OHA cert BAT-5560
Call 503-309-9372 Visit website
NW Mowbotics LLC
Daniel L. Richardson
Estacada · Multnomah Co., Clackamas Co.
OHA cert BAT-56909
Call 503-583-8373 Visit website
Olguin C Landscaping, LLC
Cristino Olguin
Beaverton · Washington Co.
OHA cert BAT-719918
Call 3052986187
Oregon Backflow Testing
Ryan T. Yancey
Tigard · Washington Co.
OHA cert BAT-6756
Call 503-491-9402
Oregon Backflow Testing LLC
David E. Crosswhite
Portland · Washington Co.
OHA cert BAT-410255
Call 503-491-9402
Oregon Backflow Testing LLC
Allen G. Teran
Portland · Washington Co.
OHA cert BAT-883975
Call 503-491-9402
Oregon Hydro-Turf, LLC
Stephen P. Burlison
Oregon City · Clackamas Co.
OHA cert BAT-673413
Call 503-451-4926
Pacific Lawn & Landscape LLC
Robert E. Ferguson
Portland · Clackamas Co.
OHA cert BAT-513812
Call 503-951-3678
Patjun W. Martin
Portland · Multnomah Co.
OHA cert BAT-433730
Call 503-913-2220 Visit website
PDX Fire Protection, LLC
Spencer B. Stavenau
Portland · Clackamas Co.
OHA cert BAT-317361
Call 503-305-7304
Perfect Flush
Stephen M. Deveney
Gresham · Multnomah Co.
OHA cert BAT-33872
Call 503-901-2848
Performance Systems Integration
Guy Cutler
Portland · Washington Co.
OHA cert BAT-4294
Call 503-641-2222
PM Backflow
Paul Molisani
Wilsonville · Clackamas Co.
OHA cert BAT-4101
Call 503-830-0171
ProTurf Landscaping LLC
Ricky A. Perkins
Forest Grove · Washington Co.
OHA cert BAT-29656
Call 503-616-6528
Pye Barker Fire & Safety
Max V. Pavlenko
Tualatin · Washington Co.
OHA cert BAT-917128
Call 503-691-9000
Rachel S. Jimenez
Portland · Multnomah Co.
OHA cert BAT-811970
Call 971-600-4766
Red Shield Fire Protection
William C. Loftis
Forest Grove · Washington Co.
OHA cert BAT-6637
Call 503-866-6854
Robert Fitzgerald
Tigard · Washington Co.
OHA cert BAT-3251
Call 503-620-4761
Robert K. Smith
Gresham · Multnomah Co.
OHA cert BAT-5807
Call 503-927-1232
Rueda Landscape LLC
Kerri L. Pyeatt
Beaverton · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-529675
Call 503-305-1761
Sergio Flores-Salgado
Aloha · Washington Co.
OHA cert BAT-5744
Call 503-277-9086
Shearer Nsaniti LLC
Jacqueline M. Shearer
The Dalles · Multnomah Co.
OHA cert BAT-722423
Call 541-870-4833
Shearer Nsaniti LLC
Marcus W. Shearer
The Dalles · Multnomah Co.
OHA cert BAT-780474
Call 541-705-0919
Sierra Landscaping Maintenance LLC
Sabino Martinez
Oregon City · Clackamas Co.
OHA cert BAT-4491
Call 503-631-3516
Sonya Sanders
Hillsboro · Washington Co.
OHA cert BAT-5123
Call 971-645-2094
Steven C. Ackerman Jr
Portland · Multnomah Co.
OHA cert BAT-680889
Call 971-317-1251
Stumptown Remodel & Repair
Dane C. Lawlor
Portland · Multnomah Co.
OHA cert BAT-486655
Call 360-607-8911
Sunrise Landscape Professionals LLC
Sarbjit S. Dhah
Boring · Clackamas Co.
OHA cert BAT-4060
Call 503-658-1828
T&R Building Services
Tim A. Aufenthie
Wilsonville · Clackamas Co.
OHA cert BAT-3466
Call 503-318-6313
T&R Building Services
Edgar I. Martinez
Wilsonville · Clackamas Co.
OHA cert BAT-6450
Call 503-317-4681
Three Mountains Construction, LLC
Francisco Carrada-Jimenez
Tigard · Washington Co.
OHA cert BAT-371343
Call 503-422-0282
Trevor L. Broyles
Sherwood · Washington Co.
OHA cert BAT-742497
Call 503-899-2602
Troll Landscaping Maintenance & Irrigati
John M. Baker
Portland · Multnomah Co.
OHA cert BAT-5307
Call 503-977-1949
United Fire
Jason B. Wallace
Portland · Multnomah Co.
OHA cert BAT-5707
Call 503-249-0771
United Fire
Luke A. Labonte
Portland · Multnomah Co.
OHA cert BAT-6035
Call 503-249-0771
Uriel Diaz
Portland · Multnomah Co.
OHA cert BAT-360321
Call 877-950-2468 Visit website
Vincent M. Myers
Beaverton · Washington Co.
OHA cert BAT-1788
Call 503-710-1559
Western Roots Landscape
Nikolaos S. Miller
Portland · Washington Co.
OHA cert BAT-5818
Call 503-850-8242
Western Waters Plumbing & Backflow
Brian M. Eames
Keizer · Washington Co., Clackamas Co.
OHA cert BAT-996430
Call 503-867-2187
Westside Residential Backflow Testing, L
Anthony W. Braaten
Beaverton · Washington Co.
OHA cert BAT-6807
Call 503-559-0788
Wolf Landscape & Hardscapes LLC
Israel Negrete
Clackamas · Clackamas Co.
OHA cert BAT-576312
Call 971-287-9217
WOW Fire Protection
Pattric W. Smith
Tualatin · Clackamas Co.
OHA cert BAT-393103
Call 503-741-7080
WOW Fire Protection
Joshua D. Harper
Tualatin · Multnomah Co., Washington Co., Clackamas Co.
OHA cert BAT-106645
Call 503-867-4943

Verify any tester's certification on the official OHA list if you have any doubt.