Around 55,000 litres of water could be collected from a 100 square metre roof area and used to supply part of your household's water needs.

A Waterwise Rebate of up to $500 is available for the purchase and installation of new tanks for domestic use.

Tanks with a capacity greater than 600 litres that are not plumbed in are eligible for a rebate of $50. Tanks with a capacity greater than 2,000 litres are eligible for a rebate of up to $500 or 50% of the purchase and plumbing in cost (whichever is the lesser amount) if they are plumbed in by a licensed plumber for use in your toilet and/or washing machine when installed.

Tank Capacity

 Rebate

600 litres or greater unplumbed 

$50

2,000 litres or greater and plumbed in for toilet and/or washing machine use

$500 up to 50%

Please contact the Department of Health on (08) 9222 4222 for guidelines on using rainwater tanks and a copy of its publication "Urban Rainwater Collection" prior to installation.

The rebate is available for one rainwater tank per household to a maximum of $500.