Find Local Backflow Testers Near You

Most cities and water districts require annual backflow testing for any property with a backflow prevention device. Some high-hazard connections may require semi-annual testing. Check with your local water authority for exact deadlines — missing yours can result in fines or water shutoff.

An RPZ (Reduced Pressure Zone) assembly is a backflow preventer used on high-hazard cross-connections. It has two independent check valves separated by a pressure-monitored relief valve. RPZ devices require certified technicians with calibrated gauges to test.

A standard residential test (PVB or DCVA) typically runs $90 to $200. RPZ assemblies cost $150 to $350 due to added complexity. Commercial or multi-family sites with multiple devices can run $200 to $800+. Repairs after a failed test commonly add $150 to $600+.

Yes. Nearly every state and municipality requires backflow tests to be performed by a certified backflow tester. Certification generally involves training, an exam, and continuing education. Our directory lists providers who mention backflow testing services on their website or Google profile.

A failed device must be repaired or replaced and then re-tested before it passes inspection. Many testers handle repairs on-site the same day. Your water authority will set a deadline to submit a passing report — continued failure can lead to fines or water disconnection.

Many certified testers submit test reports directly to your local water authority on your behalf. This is common but not universal, so confirm with your provider when scheduling. Some jurisdictions require the property owner to file separately.