What action should be taken if a backflow preventer fails a test?

When a backflow preventer fails a test, it is crucial to repair or replace it as necessary to ensure the safety and integrity of the potable water supply. Backflow preventers are designed to protect against the reverse flow of water, which can introduce contaminants into the drinking water system.

Failing a test indicates that the device is not functioning properly and poses a risk of backflow. By addressing the issue through repair or replacement, the potential for contamination is minimized, and compliance with health and safety regulations is maintained. This action not only protects public health but also ensures that the plumbing system operates effectively.

Choosing to ignore the results or simply retesting without taking corrective action does not resolve the underlying problem. Additionally, waiting for further instructions could unnecessarily prolong the risk to the water supply, making prompt action essential.