Final Specification for High-Efficiency Toilets

EPA released a final specification on January 24, 2007, for high-efficiency toilets (HETs). Manufacturers that produce HETs meeting WaterSense efficiency and performance criteria can apply to have their products certified and obtain the WaterSense label after becoming a WaterSense partner.

• Tank-Type High-Efficiency Toilet Specification (PDF) (12 pp, 166K, About PDF)
• High-Efficiency Toilet Specification Supporting Statement (PDF) (4 pp, 69K, About PDF)
• WaterSense Statement on HET Adjustability (PDF) (1 pp, 605K, About PDF)

For more information about the HET specification process, including the draft specification, public response to the draft specification, EPA's response to the public comments, and questions and answers, please see High-Efficiency Toilet Specification Background Materials and the High-Efficiency Toilet Frequent Questions page.