THE MOST SIGNIFICANTÂ SOURCES OF WATER POLLUTIONÂ ARE LACK OF INADEQUATE TREATMENT OF HUMAN WASTES AND INADEQUATELY MANAGED AND TREATED INDUSTRIAL AND AGRICULTURAL WASTES
LESS THAN 3 PERCENT OF THE WATER ON THE EARTH IS DRINKABLE, OF WHICH 2.5 PERCENT IS FROZEN IN ANTARCTICA, ARCTIC AND GLACIERS. THEREFORE, HUMANITY MUST RELY ON THE 0.5 PERCENT.