Abstract: Water is very indispensable for human life. we all know that 30% of world’s land and 70% of the water . But still there is a crisis for water. Water scarcity means water problem and water crisis. It may be happen due to naturally or by human beings. According to hydro geologists the water is soon going to become a rare commodity. The UNDP’s Human development report 2006 also mention that the most important problem of the current civilization is the water problem. The concept water scarcity also involves water stress and water crisis. Water crisis means lack of adequate clean water and water problem created when there is insufficient fresh water in a region as compared to the population. So we can say water scarcity means the presence of adequate fresh water in a region.