What is the maximum time allowed between certified tests of back-flow assemblies or devices?

The maximum time allowed between certified tests of back-flow assemblies or devices is one year. This timeframe is established to ensure that these critical devices function correctly to prevent contamination of the potable water supply. Back-flow assemblies and devices are designed to protect the public water supply from pollutants and contaminants that could backflow into the system due to pressure changes. Regular testing is essential to verify their operational integrity and to ensure compliance with public health and safety regulations.

In most jurisdictions, including Tempe, Arizona, regulations typically mandate annual inspections and testing to address any potential malfunctions that could arise over time. Waiting longer than one year could increase the risk of failing to detect issues that could lead to contamination, compromising water quality and public health. Thus, a testing interval of one year is both a regulatory standard and a best practice to ensure ongoing safety and compliance.