Approved Testers List


DISCLAIMER: This list is provided by North Perry Avenue Water District as a service to our customers. The District does not warranty work performed by anyone on this list. This is not a complete list of certified testers who are certified to perform backflow device tests, but rather a list of testers that have provided documentation that certification is current.

For an unabbreviated list go here:

If a tester not on this list conducts a test within District boundaries the appropriate documentation must accompany the test results to validate the Test (a copy of certification/calibration of equipment). North Perry Avenue Water District does not have any control over the charges for testing, repairs, or installation of backflow assemblies.


North Perry Avenue Water District provides this list of companies and individuals who have been licensed by the State of Washington and also from unlicensed companies and individuals for your own protection, ask to see the contractor’s license when hiring.  For futher information please call 1-800-647-0982 Department of Labor & Industries contractors office. Also check L&Is internet site at   ( RCW 18.27.005  &  RCW 18.27.200 )



Company Name Phone
Cintas Fire Protection   253-852-1962
Bremerton Backflow Services Jeff Mihulka 360-405-0399
Ace Backflow   253-756-6626
Silverdale Plumbing   360-692-8840
Cross Connection Specialist Nancy Perry 253-318-3156
  Skip Beahm 360-340-5640
Advanced Specialty Services Ken Wilson 360-981-6536
  Kris Varner 360-731-2503
1st Choice Testing   425-277-2888
Patriot Fire Protection   253-926-2290
AJ’s Backflow Testing Earl Varner 360-265-0157
Northwest Fire Systems   206-772-7502
Affordable WA Backflow   360-863-3784
Stop Inc   877-380-7904
Backflows Northwest Scott 425-277-2888
McLaughlin’s Peninsula Backflow Dominic McLaughlin 206-890-8337
Smith Fire Systems   253-248-2365
White Knight Fire Protection Inc   206-251-1689
  Richard Powell 360-536-7353
BATMaster/ABC Water Specialty   425-397-0275
Swift Plumbing   360-297-9592
Judge Plumbing John 360-930-8220 / 360-689-7668
Emerald Fire   253-857-2056
Backflow Assembly Solutions   360-908-7514
Mountain View Plumbing   360-698-4293


If your tester is not on this list, please have them call our office at 360-373-9508 during business hours so they can be added to the list.


Revised 1/24/23



Please contact Courtney Little, Cross Connection Control Specialist at our office with any questions and prior to any installation.