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Minnesota Department of Labor and Industry Minnesota Department of Labor and Industry Powered by Google

Backflow prevention certification


image Minnesota backflow agreement 2013 (PDF)

Effective Jan. 1, 2012, individuals performing or offering to perform the installation, maintenance, testing, repair, replacement or rebuilding of reduced pressure zone backflow prevention assemblies must be certified by the department as either a backflow prevention rebuilder or backflow prevention tester (BF/BT).  Effective Feb. 27, 2013, anyone applying for a new BT or BF certification must provide proof of current ASSE certification. ASSE certification will be required for all backflow prevention renewals submitted after Jan. 1, 2015.

  • A backflow prevention rebuilder certification allows the holder, who must also hold a current plumbing license, to perform the installation, maintenance, testing, repair, replacement or rebuilding of reduced pressure zone backflow prevention assemblies.

  • A backflow prevention tester certification limits the holder to testing reduced pressure zone backflow prevention assemblies. A plumber license is not required to obtain a tester certification, though current ASSE tester certification is required for new tester certification applications.

Individual backflow certification renewal schedule

Individuals who have a master plumber license that expires Dec. 31, 2014, can renew their tester or rebuilder certification without submitting proof of ASSE certification as long as their renewal is submitted before Dec. 31, 2014. Renewals submitted after Jan. 1, 2015, will require proof of ASSE certification.

Individuals who have a journeyman plumber license that expires Dec. 31, 2015, will need to submit proof of ASSE certification in order to renew their tester or rebuilder certification in 2015.

Anyone who is unlicensed yet has a BF/BT certification will be required to provide proof of ASSE certification if they submit their renewal after Jan. 1, 2015.

Registrations that have already been submitted will be processed and the expiration dates put in-line with the licensee's personal license expirations.

Apply or renew online

Backflow prevention certification application and forms

image New or renewal of backflow prevention rebuilder (BF)/backflow prevention tester (BT) registration (PDF)

image Click here to check the status of backflow prevention certifications


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