Acorn and Whitehall toilets are WaterSense certified! All Acorn siphon jet and blowout jet toilets, along with Whitehall's WH2142 series toilets, have been independently tested and certified to meet WaterSense standards.
This means these toilets use at least 20% less water! The WaterSense label is only awarded to water-saving toilets that complete the certification process. Meeting the rigorous criteria both performance and efficiency are necessary in earning certification. WaterSense is a voluntary partnership program sponsored by the U.S. Environmental Protection Agency (EPA).