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It may come as a surprise that washing a load of dishes in the dishwasher uses less water than doing the same number of dishes by hand. (Dishwashers also do a better job of killing germs, because they use hotter water than you would normally use if washing by hand.) For each cycle, an ENERGYSTAR qualified dishwasher model uses about 4 gallons of water; a non-qualified model uses about 6 gallons.
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February 24, 2020