Oceans splash across most of the earth’s surface. But they contain saltwater, unfit for human consumption. Only a tiny fraction of the world’s water – about 2.5 percent – is drinkable. That still would be an ample supply if it were clean and available where needed.It’s not. Today some 1.2 billion people lack access to safe drinking water and 2.6 billion lack proper sanitation (adequate sewage disposal). As a result, tainted water supplies are blamed for the worldwide deaths of 1.8 million children, according to the United Nation’s Human Development Report for 2006. That’s 4,900 children per day under 5 years old (the number of children under 5 who live in New York and London combined).
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