It is estimated that small leaks in household plumbing systems waste a trillion gallons of water every year in the United States.  By keeping you faucets and toilets in good repair, or replacing old existing fixtures with those that  utilize low flow technology, you can reduce you water bill significantly.  The following web page link will take you to the Environmental Protection Agency's "Water Sense" site where you will find many suggestions on how you can conserve our most precious resource.

http://www.epa.gov/WaterSense/