Water is a precondition of life. Besides various uses of water, it is mainly used in irrigation as India is an agricultural country. Water is a renewable resource. Life is impossible without water. Its uses are limitless whether it is in home or in fields or in industries. We get water mainly from rain, rivers, wells, ponds and lakes. Sea-water is almost useless for domestic or industrial purposes. India is said to be a Monsoon country. But the distribution of Monsoon rainfall is uneven both regionally and seasonally. Moreover, it is not dependable as its occurrence is not at stipulated times. River is the main source of surface water. The mean annual flow of the Indian rivers is estimated to be about 1,869 billion cubic metres (bcm). About 690 billion cubic metres or 36.92 percent of it is available for use. On the basis of hydrology, Indian rivers are divided into: Himalayan rivers and Peninsular rivers. Himalayan rivers have their resources in the glaciers and snow fields, so they are perennial in nature. Peninsular rivers depend on monsoon rains, so they are seasonal.
Type of water
Drinking Water
The Office of Ground Water and Drinking Water (OGWDW), together with states, tribes, and its many partners, protects public health by ensuring safe drinking water and protecting ground water. OGWDW, along with EPA's ten regional drinking water programs, oversees implementation of the Safe Drinking Water Act, which is the national law safeguarding tap water in America.
Ground Water
This page includes links to the Office of Ground Water and Drinking Water's activities to protect ground water, including the Underground Injection Control Program, the Ground Water Rule and source water protection. It also includes information on household wells and classroom activities related to ground water.
Lakes
Lakes and reservoirs cover nearly 40 million acres of the United States. This page includes the National Lakes Assessment, summaries of lake water quality,