How often do backflow preventer valves need to be replaced?

Backflow preventer valves should be replaced when they fail required annual testing or cannot be reliably repaired. There is no fixed timeline, because lifespan depends on valve type, water quality, usage, and maintenance. In Bloomington and Normal, plan on yearly tests and make the replace-versus-repair call based on test results and condition.

• Schedule annual testing with a licensed plumber.
• Replace if it fails a test, leaks, is corroded, or parts are unavailable.
• Consider replacement after repeated repairs to reduce risk.

Updated: 2025-12-30 00:00:00

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