"If groundwater can be thought of as a nation’s savings account for dry, desperate drought years, then India, which has more than its share of them, is rapidly exhausting its reserve. That situation is true in a growing number of states.
Indian surveyors have divided the country into 5,723 geographic blocks. More than 1,000 are considered either overexploited, meaning more water is drawn on average than is replenished by rain, or critical, meaning they are dangerously close to it.
Twenty years ago, according to the Central Groundwater Board, only 250 blocks fell into those categories."
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