When is testing required for all backflow prevention assemblies?

Testing is required for all backflow prevention assemblies upon installation to ensure that they are functioning correctly and effectively preventing contamination of the potable water supply. This initial testing is crucial as it verifies that the assembly has been installed properly and meets the required local and state codes for backflow prevention. Ensuring that the assembly operates correctly at the outset helps to mitigate potential risks to public health caused by backflow events.

While routine testing such as annual inspection, testing after repairs, and following water quality issues are important practices to maintain safety and compliance, the requirement for initial testing is foundational to the system's integrity. This initial assessment is a key step in ensuring that the assembly will perform its intended function throughout its operational life.