More than a billion people worldwide lack access to clean drinking water. Diseases caused by unsafe drinking water are among the world's most serious public health threats.

The Global Health and Education Foundation provided funding to the Marian Koshland Science Museum of the National Academy of Sciences to develop "Safe Drinking Water Is Essential" ( http://www.drinking-water.org), a resource devoted to providing international decision makers with peer-reviewed scientific information about enhancing the safety of drinking water supplies.

More than 125 academies worldwide are disseminating information about the Web resource, which is available in five languages.