Acceptable Solutions and Verification Methods For New Zealand Building Code Clause G12 Water supplies
All content related to G12 Water supplies
3rd edition, amendment 14
Current version: Effective on 2 November 2024
3rd edition, amendment 13
Effective on 2 November 2023 until 1 November 2024
3rd edition, amendment 12
Effective on 27 June 2019 until 1 November 2024
3rd edition, amendment 11
Effective on 30 November 2018 until 31 October 2019
3rd edition, amendment 10
Effective on 1 January 2017 until 31 March 2019
Eight referenced Standards are updated to the latest versions and BS EN 1567:1999 is referenced. Minor corrections, clarifications and consequential changes from updating Standards are made to G12/AS1 and G12/AS2.
Cited content in this document can be found on the Building CodeHub website.
3rd edition, amendment 9
Effective on 14 February 2014 until 30 May 2017
All of the Acceptable Solutions and Verification Methods relating to G12 are contained in one document.
- G12/VM1 provides a Verification Method for the design of water supply systems.
- G12/AS1 applies to below and above ground piped water supply systems. It details cross connection hazards, backflow prevention, air gap separation, water tanks, flow rates and equipotential/earth bonding. It includes hot water supply systems, climates subject to freezing and seismic restraint.
- G12/AS2 applies to solar water heaters installed in or on buildings.
3rd edition, amendment 8
Effective on 10 October 2011 until 14 August 2014
3rd edition, amendment 7
Effective on 30 September 2010 until 10 October 2011
3rd edition, unamended
Effective on 1 December 2007 until 30 June 2010
2nd edition, amendment 6
Effective on 23 June 2007 until 1 December 2007
2nd edition, amendment 5
Effective on 25 February 2004 until 23 June 2007