$QWTR Safe water and the prevention of waterborne

$QWTR Safe water and the prevention of waterborne disease are public health priorities in most developed countries, where clean water generally is available for about one-third of the world’s population. However, water-related human health problems in developing countries are daunting. Global estimates of the population in developing countries that lack access to safe drinking water range from 1.1 to 1.4 billion.