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Sign up at www.iapmoproducts.com for 12.0 AIA Continuing Education Credits by watching this entire program. Plan on attending the next Emerging Technology Symposium, May 11-12, 2010, in Ontario, Calif. For more details visit http A Comprehensive Approach to Toilet Performance Testing Robert Zimmerman, Kohler Co. The growth of the green building market, along with heightened emphasis on water efficiency, has created an increasing demand for high-efficiency plumbing fixtures. In the case of high-efficiency toilets (HETs), much work has been done to develop products that consistently flush ever greater amounts of solid waste, as measured by the Maximum Performance (MaP) test. However, achieving these unnecessarily high levels of waste removal often causes deficiencies in other areas that are of equal or greater importance to consumers. Robert evaluates the performance of several toilet models currently on the market against a multi-factor performance rating that correlates to consumer expectations. This rating system could provide the basis for future improvements to minimum plumbing standards.