Find out how to test a backflow preventer assembly and submit the test report.

Getting your backflow preventer tested

Backflow preventers have internal moving parts, rubber valves, o-rings, sensing lines and springs that are subject to fouling, wear, or fatigue.

All testable backflow preventers require regular testing to ensure their proper functioning.

Contact a tester certified by BCWWA with a valid City of Surrey business licence to test your backflow preventer. A certified tester uses appropriate calibrated testing equipment, accepted procedures required by the City of Surrey Cross Connection Control Standards, to determine if the assembly is working properly, or if it requires repair or replacement.

When to have your backflow preventer tested

Testing upon installation: You must get your new testable backflow preventer inspected and tested upon installation. This test is to make sure there's no debris in the newly installed piping, or alterations to existing piping that could foul or affect the operation of the new backflow preventer.

Annually: You must have your testable backflow preventers inspected and tested once a year, or more often if required by the City. This test is to maintain continued reliability and to ensure that they function as designed.

Other: You must have your backflow preventer tested immediately after a backflow preventer has been:

  • relocated;
  • replaced;
  • repaired or cleaned internally;
  • changes/alterations to the piping that supplies the backflow preventer have been made.

You must submit the test report to the City of Surrey after each backflow preventer test and inspection.