Plumbing and Drainage Guide 2nd edition

This guide explains the general principles of the plumbing codes and standards for sanitary plumbing in New Zealand and Australia. Issues such as backflow prevention, protection from scalding and explosion by hot water installations and the use of air admittance valves are explained in clear and simple text.

Please note: This publication is under review and we expect the third edition to be released in early 2024. The update will be aligned to published amendments to New Zealand Building Code G12/G13.