Avoid using the rinse-and-hold cycle. Depending on the age of your dishwasher, just rinsing the dishes could use several gallons of water.
Clean the spray-arm nozzles and water jets. Hard water deposits can be removed with an old toothbrush, reducing the powerful flow of water necessary to clean the dishes.
Use short cycles for everything but the dirtiest of dishes. Short cycles use less energy and work just as well.
Don’t assume that washing dishes by hand saves money. If it’s fully loaded, your dishwasher may be a better bet. Hand washing dishes uses significantly more water because most people tend to leave the faucet running during the process, using about 35% more water than an automatic dishwasher.
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