One of the best ways to conserve water is to make use of what is called grey water, which is the relatively clean waste water from baths, sinks, washing machines, and other kitchen appliances. An average Australian household produces about 200 litres of grey water per day.
Grey water can be used to water your garden, flush the toilet, or wash your car. Evidence has been produced that shows a saving of anything between 20 to 30% in water bills.
Remember not all grey water can be recycled and that is why you need professional guidance as there are several penalties for incorrect usage which may result in health risks.
First you should check with your Local Council or the Environmental Protection Agency to make sure you are allowed to use grey water should you decide to do so in your area.
Next, ensure you employ the skills of a qualified plumbing company that has the experience of installing grey water systems that comply with Australian Building Regulations.