Average rainfall in your state and recommended tank size

The average Australian household consumes around 250,000 litres each year. Of this amount, up to 125,000 litres can be used watering the garden and up to 75,000 litres for flushing toilets and operating washing machines.

So, depending on the size of your water storage and the number of people in your house, you can save up to 200,000 litres per annum.

To see how much water you can potentially collect in a year and what capacity bladder might be best for you, click on your state below.

Victoria
Annual Potential Water Savings (litres)
 Roof Size
Small
150m2
Medium
200m2
Large
250m2
Annual Potential Water Savings60,00090,000115,000
% of Average Australian Urban House Annual Water Use24%36%46%
Recommended Tank Size*2,0003,0004,000
* The actual bladder size finally recommended for your home will take into account the available space, the number of people in your home, your actual roof area and what you plan to use the water for.