The Southwest is running out of fresh water. Could the ocean provide a cure?
It’s a picture-perfect day in Southern California. The sun is beating down on this Carlsbad beach, where volleyballs hit the sand and surfers paddle out into the waves. Just steps from here, the salty water lapping the shore is being transformed. This beach neighbors the largest desalination facility in the Western Hemisphere. The Carlsbad Desalination Plant uses a complex web of pipes, tanks and specialized filters to pull salt and impurities out of ocean water, turning it into part of the drinking supply for San Diego County.