Water, one of the prime elements responsible for life on earth, disseminates through the land as well as the human body. All ecosystems and habitats owe their existence to water. Though our planet is filled with more than 70 percent of water, only 2.7 percent of it is fresh water. This shows the scarce availability of fresh water for human use. Despite that, due to excessive exploitation of ground water, and increasing pollution of fresh water resources, we are at the brink of a global water’ crisis, which needs immediate attention. Today we are living in an environmentally unsustainable world and it would have serious repercussions in the near future on the existence of our planet. Global - warming and climate change would have a debilitating impact on the existing water resources affecting millions of people throughout the world.