When must a plumbing system be tested for leaks?

A plumbing system must be tested for leaks after installation and before covering the pipes to ensure that the entire system is functioning correctly and safely. This testing is crucial because it allows for the detection of any potential leaks in the pipes that may not be accessible once they are buried or covered. By conducting this test at this stage, any issues can be addressed promptly, preventing costly repairs and water damage later on.

Testing after installation also verifies that all connections and components are secure and that the system meets the required codes and standards. It's an essential step in the plumbing workflow to ensure long-term reliability.

While other stages, such as after repairs or if a leak is suspected, are also important, they do not replace the necessity of testing immediately following installation. Annual tests may be beneficial for maintaining older systems but are not a substitute for the critical testing that occurs right after installation and prior to any coverings being made.