Peter Gleick: Water Report from Australia
Water Number: 34 gallons per day. This is the level to which per capita residential water use in South East Queensland (SEQ), Australia dropped during 2007 and 2008 in the midst of a historically severe drought. Before the drought, Queensland homeowners were using around 70 gallons per person per day. For comparison, the average Californian uses around 135 gallons per person per day in their homes. SEQ includes the city of Brisbane and is home to about 14% of Australia's total population.
Here is the report (pdf).