This FACT indicates the percentage of households which use mains (the state's) water supply in each state. This indicator offers insight into the dependency of households on town infrastructure and common water supply. Mains water is sourced from common reservoirs, rather than private water supplies (like rainwater tanks), recycled or grey water, or bore or well water. The data was collected by the Australian Bureau of Statistics in 2013. Statistics for the Australian Capital Territory and Northern Territory could not be obtained.