Approved Backflow Testers

 

CERTIFIED BACKFLOW PREVENTION ASSEMBLY TESTERS 

Updated June 2026

 

Nob Hill Water Association provides this list as a courtesy to our customers. It does not include all state-certified backflow assembly testers in the area. The list includes only testers who have provided us with verification and requested to be on it. 

Nob Hill Water Association is not affiliated with any of these testers and is not liable for their work.