Skip to main content Homepage

List of Backflow Testers

Search the List

Search for OHA-certified Backflow Assembly Testers!

Only Oregon Health Authority (OHA) certified Testers can test assemblies in Oregon. Oregon Drinking Water Services (DWS) provides a  public list of OHA-certified Backflow Assembly Testers. The public can use this list to select and contact a Tester that is currently certified and has indicated availability and appropriate licensing to test assemblies for compensation. Keep in mind not all certified testers choose to be on this list.

Using the List

The list is organized by county. You can sort by Certification #, Name of Tester, Employer, City, and State. 

A backflow assembly test performed by an uncertified Tester is not valid and cannot be accepted by the serving water supply system. Contact DWS to report any test performed by an uncertified Tester.

Get on the list

First you must be a Certified Backflow Assembly Tester in Oregon. Second you have to have a license from the Construction Contractor's Board (CCB) or Landscape Contractor's Board (LCB). 

Customers should always verify the licensing of any contractor they hire contact:
CCB at 503-378-4621
at 503-967-6291

Your browser is out-of-date! It has known security flaws and may not display all features of this and other websites. Learn how