Rainwater tanks

Many property owners are starting to install rainwater tanks to make better use of their water resources. Here are some important information you need to know about installing a rainwater tank.

Building requirements

Domestic rainwater tanks do not need a building permit if they are smaller than 10m2.

However, installation of the rainwater tank must still comply with building regulations.

If it’s attached to the home, rainwater tanks can be installed no less than 500mm from an allotment boundary.

Freestanding water tanks can be installed next to the property boundary in certain circumstances, provided that the tank’s height, length and location comply with the building regulations.

For more information 

Call our Building Department on 9243 8888 before installing your water tanks.


Rainwater tanks must be connected to a stormwater drain. The tank must have an overflow pipe, which allows the return of excess stormwater into the property drain. Make sure that the drainage from the water tank is not going to be a nuisance for neighbouring properties.

Regulations for a sustainable future

All new homes must achieve a house energy rating of five stars for building fabric, and have either a solar hot water system or a rainwater tank installed.

Rainwater tanks must have a minimum capacity of 2000 litres.

State encouragement

The State Government of Victoria has introduced a rebate scheme for purchase of water wise products such as:

  • Rainwater tanks with connection to toilets
  • Greywater systems - tank system that recycles waste water from laundries and bathrooms for use on the garden or in the toilet
  • AAA dual flush toilets
  • AAA shower roses - a water efficient shower rose that uses 30% less water than a normal shower
  • High pressure cleaning devices - uses up to 80% less water than a standard hose

Full details can be found at Our Water Our Future.

For more information

Call our Building Services department on 9243 8888.

Last updated: Wednesday, 18 July 2018, 5:21 AM