ABSTRACT
Grey water may contain traces of dirt, food, grease, hair, and certain household cleaning products. It is the waste water from showers, baths, spas, hand basins, laundry tubs and washing machines. It is promote grey water reuse as a way to increase the productivity of sustainable backyard ecosystems that produce food, clean water, and shelter wildlife. With proper treatment grey water can be put to good use. Treated grey water can be used to irrigate both food and non food producing plants. The nutrients in the grey water provide an excellent food source for these plants. Installing a grey water treatment system will reduce how much water is used and reduce the amount of waste going into the sewerage system. The cost of mains water in Australian cities is so low that it is unlikely to ever recoup the cost of a grey water treatment system.
