India is the largest user of ground water in the world. But reliance of this overexploited resource has reached its limits in many parts of the country. Nowhere is this more evident than in the drought-prone districts of Rayalseema, uplands of Prakasam, Krishna, East-West Godavari, parts of Nellore, Vizianagaram and Srikakulam in the state of Andhra Pradesh (AP). Forty per cent of the state’s irrigation needs are met through groundwater. In the drought-prone Rayalseema region – which comprises Chittoor, Anantapur, Kurnool, Prakasam and Kadapa districts -- dependence on groundwater for irrigation is particularly high. The water crisis is also most severe in this region.