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But desalination is expensive. A thousand gallons of freshwater from a desalination plant costs the average US consumer $2.50 to $5, Pankratz says, compared to $2 for conventional freshwater.ut desalination is expensive. A thousand gallons of freshwater from a desalination plant costs the average US consumer $2.50 to $5, Pankratz says, compared to $2 for conventional freshwater.
You know, they actually make a water desalination device for boats. They cost about 1 to 2 thousand dollars but provide high volume potable water.... I read about that a few moths ago. Great idea, but a little too big to fit in a small sailboat.