RPZ FAQs: Testing

​Why do RPZ valve need regular testing?

All mechanical devices require routine maintenance. As a mechanical backflow prevention device protecting against contamination up to and including fluid category 4 fluids (contaminants which poses a significant health hazard) it is important to ensure, both those on site and the drinking water network, continue to be protected by regularly verifying the valve is functioning satisfactorily.



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Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.

Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.