One day last spring, water pressure in pipelines suddenly crashed In the Antelope Valley, setting off alarms. Demand had inexplicably spiked, swelling to three and half times normal. Water mains broke open, and storage tanks were drawn down to dangerous levels. … It took a while for officials to figure out where all that water was going: Water thieves — likely working for illicit marijuana operations — had pulled water from remote filling stations and tapped into fire hydrants, improperly shutting off valves and triggering a chain reaction that threatened the water supply of nearly 300 homes.

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