Groundwater and Water Resources in India

India's water comes mainly from rain, and the monsoon delivers most of it in about four months. Rivers, lakes and reservoirs hold the visible part, but groundwater, water stored in pores and cracks beneath the surface, is the quiet workhorse of Indian water supply. It provides a large share of irrigation and drinking water, especially in the northern plains and the Deccan, where wells and tubewells allow farmers to irrigate even when canals and rain are unreliable. Because groundwater is invisible, it is easy to overuse: a well that runs dry is often noticed only after the aquifer around it has been depleted.

Groundwater depletion is now a major concern in parts of Punjab, Haryana, western Uttar Pradesh, Rajasthan and the hard-rock Deccan, where aquifers recharge slowly and pumping for water-intensive crops such as paddy and sugarcane exceeds recharge. Depletion lowers water tables, raises pumping costs, dries up shallow wells used by poorer households first, and can draw in saline or contaminated water. In coastal areas, over-pumping can also pull seawater into freshwater aquifers, a process called saline intrusion. At the same time, other regions face waterlogging, where canal irrigation without drainage raises the water table and damages soil with salts.

India's water policy therefore has to manage both scarcity and excess, and both surface water and groundwater together. Measures include rainwater harvesting, watershed development, recharge of aquifers through check dams and percolation tanks, more efficient irrigation such as drip and sprinkler systems, and crop choices suited to local water availability. The Central Ground Water Authority, set up under the Environment (Protection) Act, 1986, regulates groundwater in notified areas, while state groundwater laws and community management play a growing role. None of these measures works alone: a recharge structure without control on pumping, or a new canal without drainage, often solves one problem and creates another.

For civil studies, groundwater is a classic common-pool problem: it belongs to no single owner, it moves across property boundaries, and everyone benefits if it is conserved but each user gains by pumping more. That is why pricing, electricity subsidies for pumping, crop patterns and local institutions matter as much as engineering. A good answer on water will ask who pumps, who pays, who monitors, and who is left without water when the table falls, rather than only how much rain fell.