Many of us take running water for granted. And recent events prove a water scarcity could become a reality for many U.S. cities. It’s happened before. Hundreds of wells ran dry near Bakersfield, California in 2014. Forced to go without running water until late 2016, residents received bottled water via trucks until a nearby town extended its water supply.Due to population booms, pollution disasters, and climate change, taps will run dry all over the world in the near future. Here are the most populated, water-stressed cities in America and beyond.