What is likely happening
A failed or leaking backflow assembly must be repaired or replaced and retested to protect the drinking water supply, and the water authority usually requires a passing test on file.
What you can safely check
- Look for water discharging from the relief port of the assembly.
- Find the date of the last passing test.
What an inspector will look at
- Check valves and relief valve
- Repair or replacement
- Retest and filing with the water authority
Does this affect compliance?
Most water authorities require annual testing of backflow assemblies by a certified tester.
When it becomes urgent
Urgent if the relief valve is discharging continuously.
We can help with this
Backflow testing and certification is something Insparisk does nationwide. To see the local rules for your building, open this in the interactive Problem Solver.
Request backflow testing and certificationTalk to an advisorGeneral guidance only, not a substitute for a licensed inspection or emergency services. For any gas odor, carbon monoxide alarm, fire, or trapped occupant, call 911 first.