IMPORTANT: MaP scores represent the number of grams of solid waste (soybean paste and toilet paper) that a particular toilet can flush and remove completely from the fixture in a SINGLE FLUSH. Essentially, the MaP test is a TEST TO FAILURE. MaP Testing is an INDEPENDENT testing program not affiliated with nor controlled by any manufacturer or group. For detailed background on its original sponsors and its development, go here.
Since its development and release in 2003, MaP Testing has been a major driving force in the improvement of toilet flush performance in North America. In 2003, the average MaP score of all tested toilets was 336 grams (12 ounces), while by March 2017, the average score of 2,500 different tank-type toilet fixture models had more than doubled to 882 grams (31 ounces). (SEE THE GRAPHICS HERE!) The competitive pressure to improve fixture performance from the unacceptable levels of the 1990s, together with MaP as a vehicle to measure performance, resulted in many hundreds of very high-performance 21st century models, for which the manufacturers must be given great credit! Today, over 160 manufacturers representing over 200 different toilet fixture brands are participating in the MaP Program!
Remember, though, MaP is a VOLUNTARY testing program. Manufacturers may choose to participate, but are under no compulsion to do so. Therefore, not all toilet models found in the marketplace (at the wholesalers, distributors, retail outlets, plumbing supply houses) will have been MaP tested. But, to date, over 4,000 different tank-type toilet models have been tested, nearly 4,200 of which are reported in our public database on this website! In addition, another 570 flushometer bowl/valve combinations (for commercial installations) have been MaP tested and results reported here. All of this information is available to you free-of-charge!
To learn what manufacturers must do to participate in MaP and submit their toilet models for testing, go here.