RPZ FAQs: General

Thinking about installing an RPZ valve at premises you are responsible for what do you need to know?

Potential users of RPZ valves must be aware that water undertaker’s consent will always be conditional upon installation, commissioning and compliance testing requirements.

If you are thinking about an RPZ valve installed at premises you are responsible for, things you need to do include:

  • S​peaking with the local water undertakers to find out whether you need an RPZ valve and if so where, and the valve, you are planning to install is suitable
  • Notify the local water undertaker
  • Familiarise yourself with the RPZ AIM,
  • Consider whether an RPZ valve is right for you – consent to install will always be conditional on ongoing testing requirements.


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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.