Bangalore has a problem: It is running out of water, fast. Cities all over the world, from those in the American West to nearly every major Indian metropolis, have been struggling with drought and water deficits in recent years. But Bangalore is an extreme case. Last summer, a professor from the Indian Institute of Science declared that the city will be unlivable by 2020. He later backed off his prediction of the exact time of death—but even so, says P. N. Ravindra, an official at the Bangalore Water Supply and Sewerage Board, “the projections are relatively correct. Our groundwater levels are approaching zero.” ... Every year since 2012, Bangalore has been hit by drought; last year Karnataka, of which Bangalore is the capital, received its lowest rainfall level in four decades. But the changing climate is not exclusively to blame for Bangalore’s water problems. The city’s growth, hustled along by its tech sector, made it ripe for crisis. ... Through the 2000s, Bangalore’s urban landscape expanded so quickly that the city had no time to extend its subcutaneous network of water pipes into the fastest-growing areas, like Whitefield. Layers of concrete and tarmac crept out across the city, stopping water from seeping into the ground. ... 44 percent of the city’s water supply either seeps out through aging pipes or gets siphoned away by thieves. ... Everywhere, the steep ascent of demand has caused a run on groundwater. Well owners drill deeper and deeper, chasing the water table downward as they all keep draining it further. The groundwater level has sunk from a depth of 150 or 200 feet to 1,000 feet or more in many places.