An official website of the United States government.

WaterSense

Toilets Specification and Certification

Toilets are by far the main source of water use in the home, accounting for nearly 30 percent of an average home's indoor water consumption. Older, inefficient toilets that use as much as 6 gallons per flush also happen to be a major source of wasted water in many homes.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.