Certificate for EPA WaterSense High Efficiency Lavatory Faucets. Products listed on this certificate have been tested by an IAPMO R&T recognized laboratory. This recognition has been granted based upon the laboratory’s compliance to the applicable requirements of ISO/IEC 17025. Products are in compliance with the following standard(s): EPA's WaterSense High Efficiency Lavatory Faucet Specification (Version 1.0, 10-01-2007 edition).