Technical Interpretations

    • Secondary backflow protection

      There are some circumstances in caravan and holiday homes where secondary backflow protection may be required. The following interpretation (B26) for these types of situations has recently been updated. B26 Secondary backflow read more

    • Interpretations update - autumn 2017

      WRAS publishes technical interpretations to assist in the design,installation or maintenance of plumbing systems. The most recent updates are listed below, but why not take a look in the ‘Resources’section of the WRAS website under read more

    • Interpretations update - spring 2017

      Sometimes technical interpretations to the Water Supply (Water Fittings) Regulations and Byelaws are withdrawn to prevent confusion. The following interpretations have been withdrawn: N02 Notification of alterations – exemption for read more

    • Looking at the risks in Laboratories

      Laboratories provide unique challenges when trying to determine the backflow risks associated with them. WRAS has updated an interpretation called ‘Laboratories – backflow risk’ B01 Laboratories – backflow risk read more

    • Should you report dangerous plumbing?

      Where plumbing infringements are so serious that they could cause a risk to human health, installations should be reported to the responsible owner or occupier and the water supplier in order to ensure the matter is properly investigated and read more

    • Mind your tap gaps

      Recent arrivals at the domestic kitchen sink include taps with hoses/pull-out spouts, taps which fold into the sink below the work top level and ‘pull-down’ taps like those in commercial kitchens. Kitchen taps with pull-out spouts, read more

    • Clarification about Notification Requirements

      When installing or replacing parts of plumbing systems, to protect drinking water supplies installers must comply with the requirements of the Water Supply (Water Fittings) Regulations and Byelaws in Scotland (collectively referred to as the read more