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Backflow Assembly Testers and Cross Connection Specialist Certification

The Cross Connection and Backflow Prevention program certifies Backflow Assembly Testers and Cross Connection Specialists in the State of Oregon.

All backflow prevention assembly testing in Oregon must be performed by Oregon Health Authority (OHA)-certified Backflow Assembly Tester. All community water systems in Oregon serving 300 or more service connections are required to contract with or employ an OHA-certified Cross Connection Specialist to oversee their cross connection program.

Available Now: Pay your certification Fee online with a credit card!

New and Reciprocity Certification

The Department issues certification cards for Testers and Specialists on a 2-year certification cycle.


Individual renewal applications are mailed to all currently certified Specialists and Testers in October of every year.


Get contact information for professional associations, sub-commmittees and foundations, etc..


View the list of companies that offer Backflow Assembly Tester and Cross Connection Specialist certification training approved by Oregon Drinking Water Services.

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