Please select your county from below to view the ASSE Certified Backflow Testers in your area.
Note: NAWSC makes every effort to keep the list of certified testers current, however, there may occasionally be inaccurate information on this site. Individuals that need to obtain the services of a certified tester should ask the tester if his or her certification is still current. Certified testers have the responsibility to keep their phone numbers current by informing this office if there is any change. NAWSC is not responsible for any damages to any party due to inaccurate information contained in this certified testers listing.
Certified Testers: If you also wish to have your business name, phone number, and email address listed, please review the information found on the Website Advertising Registration page.