Approved Testers List


The Washington Department of Health Office of Drinking Water has authorized Washington Certification Services at Green River College to maintain a list of certified Backflow Assembly Testers.


North Perry Avenue Water District does not maintain this list, nor claim resposibility for the quality of work or any other aspect of the testers listed.



Revised 5/8/23



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