About 8 percent of in home water use takes place in the kitchen.Dont rinse dishes before loading dishwasher. Water saved 20 gallons per load.Wash only full loads in the dishwasher. An efficient dishwasher usually uses much less water than washing dishes by hand. Install a low flow faucet aerator, which can cut water use in half. Water saved 1 to 2 gallons per minute.When buying a new dishwasher, consider purchasing a water saving model. (New models use up to 25 percent less water than older ones.) Water saved 3 gallons per load.