How Much Water Does a Dishwasher Use?


Quick Answer

A dishwasher uses between 5 and 15 gallons of water per load. The exact amount depends on the age of the dishwasher.

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Full Answer

Older dishwashers tend to use more water per load as they are not as energy efficient as newer models. When using an older dishwasher, a family of four can use 1,800 gallons of water per year. The average family washes around 150 loads of dishes in a dishwasher annually. By using a newer, energy efficient machine, a family of four can save between 500 and 1,000 gallons of water yearly. The exact amounts varies depending on the amount of usage.

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