A greywater system is able to treat waste water from the bath, shower, washing machine and laundry trough (not toilet or kitchen) and can then be used for irrigating gardens.
A number of factors will be considered when processing the application including the location of any existing or proposed effluent disposal systems, setbacks to buildings and boundaries, and ensuring the proposed system has the capacity to handle the expected volume of greywater.
To install a Greywater System an Application to Construct or Install an Apparatus for the Treatment of Sewage must be submitted to the Shire. For commercial properties, application for a second system on a property or systems expecting more than 540L of sewage per day the Department of Health's application form must be submitted to the Shire.
More information –
Greywater – Department of Health