Skip links and keyboard navigation

Skip to primary navigation | Skip to secondary navigation | Skip to content | Skip to content | Skip to footer | Use tab and cursor keys to move around the page (more information)
Skip Navigation LinksDepartment of Housing and Public Works > Construction > Building and plumbing > Plumbing and drainage > Greywater > Greywater use

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).

Read more about the repeal of water savings targets.

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 For information on the requirements that applied prior to 1 February 2013 refer to the superseded version of the Queensland Development Code Parts 4.2 – Water saving targets and 4.3 – Alternative water sources – commercial buildings.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 treatment plant approval under the Plumbing and Drainage Act 2018​. All systems must undergo stringent testing prior to approval being granted for greywater re-use.
The Queensland Plumbing and Wastewater Code (PDF, 1.1MB) specifies the requirements for the design, construction, installation and maintenance of greywater treatment systems.
To apply for treatment plant approval of a greywater treatment system, a Form 10—Application for treatment plant approval must be submitted to the Department of Housing and Public Works. The form must also be accompanied by the documentation specified in Schedule 5 of the Plumbing and Drainage Regulation 2019.
View the list of greywater treatment systems with treatment plant approval. 

More information

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

Last updated 30 July 2019    Creative Commons Attribution 4.0 International (CC BY 4.0)

Copyright |  Disclaimer |  Privacy |  Right to information |  Accessibility |  Jobs in Queensland |  Other languages

© The State of Queensland – Department of Housing and Public Works 2009–2019

Queensland Government