Redirect water from the washing machine, showers or bath to a holding tank for use on the garden.
There are simple and complex systems, but they all involve reusing water that would otherwise be lost.
Save up to 28,000 litres of water per year, equates to $63 based on 28kL @ $2.276c/kL = $63
Remember - never drink grey water.
Low cost diversion system is for a simple greywater diverter valve taking water from a drain pipe to garden. Upper cost diverter system is a unit with filtration and storage tank. Greywater treatment systems can be purchased for between $6,000 to $15,000 and include pump, tank, plumber costs and installation. Water savings assume reduced potable water use by using treated greywater for garden watering.