Benefits flow from grey water

An important part of this has been working with residents to reduce their water use. As a result, Perth residents have reduced their water use from 191,000 litres per person in 2000-2001 to 135,000 litres in 2011/12 ” a great achievement.

Customers say they have cut shower times, have water-efficient appliances, they use sprinklers in accordance with watering times and their gardens are water wise. To our delight, they are not happy to stop there and continue to ask what more they can do to help.

Many homes have garden bores or rainwater tanks that can help to reduce the amount of precious scheme water used in gardens.

Some residents are also interested in installing a grey water system when building a new house, or retrofitting an already established home.

Grey water is water that comes from the bath, spa, shower, bathroom washbasins, washing machines and laundry troughs and can provide a great alternative to potable water.

A grey water diversion system harnesses such water for uses in the garden such as watering fruit trees, garden beds and lawns.

The Water Corporation has partnered with sustainability guru Josh Byrne to develop guidelines for grey water diversion system plumbing to make it easier for residents to recycle grey water in their homes.

Josh’s experience, along with help and funding from the Water Corporation, formed the basis of the guidelines for the pre-laying and plumbing of new grey water systems to ensure the safest and most efficient use of that water.

Customers’ local councils will be required to approve the use of a grey water system, subject to an inspection to ensure it is installed properly.

In addition, connection into the system or modifications to any domestic plumbing must be carried out by a licensed plumber.

The grey water diversion system guidelines can be found on the Greywater Industry Group’s website gwig.org.