The average person uses just under 70 gallons of water daily, according to the American Water Works Association. The largest water use area is the toilet, using an average of 18.5 gallons per day. This is followed by the clothes washer, shower, and faucets. It is estimated if all homes in the United States installed water conserving items it would be possible to reduce water consumption by as much as 30 percent. This translates in a reduction of 5.4 billion gallons of water each day. For those unconcerned with water conservation, here is another number for you to consider. This would save approximately $11.3 million per day, or nearly $4 billion each year.