Revealed: the massive scale of UK's water consumption

The scale of British water consumption and its impact around the world is revealed in a new report today, which warns of the hidden levels needed to produce food and clothing.

The UK has become the sixth largest net importer of water in the world, the environment group WWF will tell a meeting of international experts in Stockholm, with every consumer indirectly responsible for the use of thousands of litres a day. Only 38% of the UK's total water use comes from its own resources; the rest depends on the water systems of other countries, some of which are already facing serious shortages.

The study makes the first attempt to measure the UK's total "water footprint" and highlights the extent to which our imports come from countries which are running out of fresh water. It calculates that:

· Average household water use for washing and drinking in the UK is about 150 litres a person daily, but we consume about 30 times as much in "virtual water", used in the production of imported food and textiles;

· Taking virtual water into account, each of us soaks up 4,645 litres a day;

· Only Brazil, Mexico, Japan, China and Italy come higher in the league of net importers of virtual agricultural water. People in poorer countries typically subsist on 1,000 litres of virtual water a day;

· Different diets have different water footprints. A meat and dairy-based diet consumes about 5,000 litres of virtual water a day while a vegetarian diet uses about 2,000 litres.

"What's particularly worrying is that huge amounts of the food and cotton we consume are grown in drier areas of the world where water resources are either already stressed or very likely to become so in the near future," said Stuart Orr, WWF's water footprint expert.

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