Plumbers' technical note – Reticulation cut-ins and backflow prevention

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All documents issued prior to 1 July 2017 were issued by the former Department of Commerce. Documents listed here are the latest versions available. For more information on this document, please contact online@dmirs.wa.gov.au.

This publication is for: 
Plumber

This technical note responds to issues raised by licensed plumbers regarding the installation of reticulation/irrigation cut-ins and backflow prevention, 40 mm traps (using products with built-in air admittance valves), vacuum sewer and boundary trap installations and venting.

Building Commission
Technical standards
Last updated 22 May 2014

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