From: New Scientist
Published March 6, 2008 09:59 AM

'Thirsty' electric cars threaten water resources

They may not be gas-guzzlers, but electric cars have a raging thirst for water.

A comparison of the volume of coolant water used in the thermoelectric power plants that provide most of our electricity and that used in extracting and refining petroleum suggests that electric vehicles require significantly more water per mile than those powered by gasoline.

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The findings could bode ill for drought stricken areas in the event of a large scale switch to plug-in vehicles.

"I wouldn't sound the alarm that this is going to ruin the day," says Carey King from the University of Texas, Austin, US, noting that no mass-market electric vehicle is currently available. "But looking into the future, this is something we should take into account."

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