Supply option for large buildings or new urban developments
A considerable volume of rainwater can be collected from the roofs of large residential or commercial buildings within a community, stored in tanks or underground, and distributed through a ‘third pipe' scheme to multiple users for non-drinking in-house use and watering of green spaces. A water service provider may be required where roof catchments/tanks are shared and the water is delivered to multiple users. More information for developers is provided in the Department of Health's Draft Alternate Water Supply Guidelines – Stormwater and Rainwater (April 2009).