Overpumping in India has caused salt water to invade freshwater aquifiers, contaminating drinking water. Take irrigated land out of produciton. Reduce harvests and switch to growing products that require less water, like Sugar Cane and Cotton Overpumping is also widening the gap between the Rich and the Poor Poor farmers can not afford the cost of digging deeper wells as water levels continude to drop. They end up renting their land and becoming laborers on their own property. This is eqivilant to seven Nile Rivers.
Population is also a problem.
In China the number of cities has climbed from 130 in 1949 to more than 600. Half of these are already short of water. India is expected to add 340 million people to its cities from 1995 to 2025. That is more than the current population of United States and Canada combined. Not only do falling water tables affect people because they get thirsty, it affects their hunger because cropes require water also.