Older faucets use between 3 and 7 gallons per minute. The aerators can be screwed into your existing faucets. They'll cut water use in half. A leaky faucet may simply need a new washer. Small faucet leaks can waste 20 gallons of water a day.
Large leaks can waste hundreds of gallons.
Turn off the water while washing, brushing teeth, etc. Don't let the water run when you brush your teeth or while washing your face or hands. This can save 3 to 7 gallons per minute. Use the sink basin while shaving Put a stopper in the sink and dunk your razor instead of rinsing it under the faucet. Place a filled two-liter bottle in the toilet tank Use the bottle as a displacement device to save water with every flush.