NTS Ltd is now an accredited approved inspector for RPZ valves, which allows us to carry out tests under the WRAS Advisory standards.

​

RPZ stands for Reduced Pressure Zone. This device is installed onto some plumbing systems to protect drinking water and the city water supply from contaminants.

​

RPZ valves are required when a house or building is equipped with an irrigation system, fire suppression system, or a large boiler (hereinafter referred to as Systems). Contaminants can enter an irrigation system from fertilizer or pesticides that are sprayed onto lawns. In the case of a boiler or fire suppression system, water sits stagnant or trapped in these systems, which leads to a build-up of bacteria and increased mineral content from the piping system.

To book in or request a quote please do not hesitate to contact us.