In the year 2016, the people of San Diego County will be drinking seawater. Not straight out of the Pacific, of course; the water - up to 54 million gallons per day - will first pass through the Carlsbad Desalination Plant, the largest desalination facility ever built in the Western Hemisphere. Is purified saltwater the answer to California's drought? Businessweek's Sam Grobart investigates. (Video by: Alan Jeffries, Ryo Ikegami)
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