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Greywater use

Water savings targets for Class 1 buildings

From 1 February 2013, houses and commercial and industrial buildings no longer have to meet water savings targets by installing a rainwater tank or other supplementary water supply systems, such as a greywater treatment plant.
Provisions have been made for local governments to opt-in to water savings requirements in recognition of Queensland’s varying climatic conditions and regional circumstances. A list of participating local governments will be provided as they are approved.
Builders in these local government areas will still need to comply with water savings requirements.
Water supply systems such as rainwater tanks and greywater treatment plants can still be installed voluntarily by homeowners and builders in all areas of the state.

Builders who install a supplementary water saving system (either voluntarily or to meet local government requirements) must comply with the health and safety standards set out in the Queensland Development Code Parts 4.2 – Rainwater tanks and other supplementary water supply systems (Class 1, 2 and 10 buildings) and 4.3– Supplementary water sources – commercial buildings (Class 3-9 buildings).

More information on the repeal of water savings targets is available online.

Prior to 1 February 2013, all new homes and commercial and industrial buildings in Queensland were required to install rainwater tanks or other water supply systems such as grey water treatment plants. For information on the requirements that applied prior to 31 January 2013 refer to the superseded version of the Queensland Development Code Parts 4.2 – Water saving targets and 4.3 – Alternative water sources – commercial buildings.

Approval of greywater treatment systems

All greywater treatment plants, including large greywater treatment systems, require chief executive approval under the Plumbing and Drainage Act 2002. All systems must undergo stringent testing prior to approval being granted for greywater re-use.
The Queensland Plumbing and Wastewater Code specifies the requirements for the design, construction, installation and maintenance of greywater treatment systems.
To apply for chief executive approval of a greywater treatment system, a Form 10—Application for chief executive approval must be submitted to the Department of Housing and Public Works. The form must also be accompanied by the documentation specified in the Queensland Plumbing and Wastewater Code.
A list of greywater treatment systems with chief executive approval is available here. 

More information

For more information read the Queensland Development Code, building laws and plumbing laws.

Last updated 13 February 2013    Creative Commons Attribution 4.0 International (CC BY 4.0)

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