Maximum Performance (MaP) Testing

A Better Measurement of Toilet Performance

Many toilet fixture performance tests exist, including proprietary tests by the fixture manufacturers, tests by Consumer Reports magazine, and the tests mandated by the plumbing codes for fixture certification.  Few of these, however, use test media that closely resembles the real "demands" upon a toilet, i.e., that of human waste.

The Maximum Performance (MaP) testing project was undertaken in 2003 in order to identify how well popular toilet models perform using a realistic test media.  The testing protocol, cooperatively developed by water-efficiency and plumbing fixture specialists in the U.S. and Canada, incorporated the use of soybean paste as a test media, closely replicating the "real world demand" upon fixtures.  Performance testing of 80 different toilet fixture models was completed and summarized in the Final Report of December 2003.

Now over seven years old, the current MaP lists provide performance information on over 1,400 different toilet fixture models.  Many of these models are WaterSense-certified high-efficiency toilets (HETs).

Download the MaP Background Report to see how MaP was developed and read the full test protocol.  Download the PDF listing of 1,400+ tank-type toilet fixtures and their flush performance (previously labeled "Appendix B") or the PDF listing of 97 commercial flushometer valve/bowl combinations (previously labeled "Appendix D"). 

To sort and filter these lists for your own specific criteria, an MS Excel version of each can be downloaded from the Veritec Consulting Inc. web site (instructions on filtering are provided on their web site):  Tank-Type Toilet Fixtures, Commercial Flushometer Valve/Bowl Fixture Combinations

MaP Documents

• MaP Background Report 
• Tank-Type Toilet Listing - Sorted by Manufacturer (Updated 07-28-2010) 
• Commercial Flushometer Listing - Sorted by Manufacturer (Updated 07-28-2010) 
• WaterSense-certified HETs w/ MaP Test Results (Updated 07-28-2010) 

The original development of the MaP test media and test protocol in 2003, as well as the testing of the first group of 80 toilet fixtures, was sponsored by the following 22 organizations:

Canada

U.S.A.