Although, three-quarters of earth is covered with water, not all of it is available for human consumption. Ninety seven percent of water is in oceans and seas and only 3% is freshwater. Of this 3% of freshwater 77.6% is frozen polar ice, 21.8% is groundwater, part of which is too deep, only fraction of the water (0.6%) is available surface water (rivers, lakes representing 0.34% of the planets atmosphere) in atmosphere, soil or aquifers. Water is distinct from all the other natural resources because of its unique physical properties (its ability to exist as solid, liquid and gas), cultural and religious significance, complex economic characteristics and last but not the least its essential role in supporting all the life on this planet earth. This means that developing effective water policies need to consider economic, ecological, environmental, cultural, legal and political issues. [download]
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