Each and every one of us can use our precious water supplies more efficiently. Sometimes, it is just a matter of avoiding waste. Did you know that turning off the water while you brush your teeth can save four gallons each time? That may not seem like much water, but in one year that adds up to be about 2,880 gallons of water wasted down the drain. If everyone in the U.S. turned off the water while brushing for one year, we would save four times the Mississippi River’s annual flow of water!