bl00dy hell. what a wasteful lot we are!
I robbed this from water wise site: If present levels of consumption continue, two-thirds of the global population will live in areas of water stress by 2025. Increasing human demand for water coupled with the effects of climate change mean that the future of our water supply is not secure. The UK has already witnessed some of its worst droughts ever. Though we might envision our nation as lush and rainy, we are not immune from water scarcity problems. We, too, can run out of water.
Look and see what can be done to reduce your water wastage
http://www.waterwise.org.uk/