Water is a key to social equity to environmental stability and to cultural diversity. If one goes back to the culture of ancient times, with all the great religions of the world, it will be seen that water is much more than an economic issue. Water is directly linked with spiritual values, with respect to mankind towards nature. Water is also firmly linked with health. According to the estimate of world health organisation who, 80 of all diseases &mdash approximately 25 million deaths per year &mdash in the developing countries are caused by contaminated water.