For a listing of Safe Water Commission-registered plumbing companies, click here 

Find ASSE Certified backflow rebuilders near you! Simply enter your zip code and a search radius in miles in the form below, and a listing of rebuilders will be displayed.  Those testers that are listed in the "Registered with SWC" column have active certifications, have performed backflow tests, and uploaded data into the SWC portal.  All other actively certified testers within the search parameters are listed below them.  Both Certified Backflow Testers and Backflow Rebuilders are authorized to perform backflow device testing.