Julia said:Today's Courier Mail newspaper published an account of several households using as much as 37,000 litres per day(!).
Maybe this country needs a water rights trading sceme applicable to the whole population. People would get a yearly water allowance to do with what they please. People who use more then their quota would be forced to buy rights off other people who have not used all their quota. As water supply changes so would the quotas to reflect the change and then market forces could determine the price of water rights. At least then those who don't care about the problem can pay those who do.