Spain Is Thirsty. Here’s How It Gets Water.

On a fiery hot day in late June, tourists filled the cafes and hotel rooms along Spain’s Mediterranean coast, including in Torrevieja, a small city of tightly stacked apartment blocks running along a curved beach.The seasonal population surge in this dry, sun-baked region might strain water resources were it not for a set of buildings overlooking a pink-tinged lagoon nearby.These low-slung structures house a vast…