When should a plumbing system be tested for leaks?

Testing a plumbing system for leaks should occur after installation and whenever modifications are made to ensure the integrity and reliability of the system. This practice is crucial because any new connections, components, or alterations can introduce potential points of failure. By conducting tests at these stages, you can identify and address any leaks or weaknesses before the system is put into regular use, which helps to prevent water damage and costly repairs later on.

While testing before painting walls or connecting fixtures might seem beneficial, it does not encompass the ongoing need to check for leaks throughout the lifespan of the plumbing system. Relying solely on annual inspections can lead to undetected issues, as leaks can develop at any time due to various factors such as wear and tear or environmental conditions. Therefore, the most effective approach is to test immediately after the initial installation and subsequent modifications to maintain a safe and functional plumbing system.