WaterSense is a U.S. Environmental Protection Agency (EPA) program designed to encourage water efficiency in the United States through the use of a special label on consumer products. It was launched in June 2006.WaterSense is a partnership program sponsored by EPA with the goal of protecting the future of the U.S. water supply. By promoting and enhancing the market for water efficient products and services, WaterSense makes every drop count by leveraging relationships with key utility, manufacturer and retail partners across the U.S.