Water nurtures life, without which human beings would perish. It has acquired a new meaning beyond its traditional uses for irrigation, navigation, municipal, industrial and hydropower. It has come to be associated with a certain kind of life style-entertainment, sports, and leisure. Yet water shortages are already a fact of life for millions of people around the world. Indeed, estimates predict severe water scarcity and related crises by 2030. Water demands are increasing, ground water levels are decreasing, surface water supplies are increasingly contaminated, and delivery and treatment infra-structures are aging. This book will give you the real picture of what’s happening on the earth with regard to water availability, consuming pattern, increasing demand, scaring water resources and management strategy for twenty first century. It is hope that the book will be of immense help to scholars of Geography & environment, researchers, analysts, academicians, policy makers and implementers.