John Koeller
Koeller & Company
Office 714.777.2744
Mobile 714.757.0679
Bill Gauley
Gauley Associates, LTD.

Information for Water Utilities

Water Utilities and Test Protocol

Did your organization encourage toilet replacements in the 1990s that ultimately led to customer dissatisfaction with new 1.6-gallon/6.0-Litre toilets?  Did you also experience negative customer feedback on those dreaded “low flow” toilets?  Well, if you did not, other water providers certainly did!  Clogging, double-flushing, and generally poor flush performance characterized some of the early 1.6-gallon/6.0-Litre fixtures….and, unfortunately, that “reputation” seems to still remain with some consumers, even though it is no longer deserved.

Those experiences led to a groundbreaking step by those same water providers in 2002, when 22 sponsoring organizations  in the water utility industry stepped forward and funded the development of a more rigorous test protocol, which ultimately became known as Maximum Performance (MaP) testing.

MaP testing of toilet fixtures is the 21st century solution to assessing flush performance. Using testing materials closely resembling the “real world” demands on toilets, the MaP protocol  tests toilets to the point at which they no longer evacuate all waste in a single flush…..hence, the term maximum performance! MaP testing, therefore, is truly a TEST TO FAILURE.

Waste is represented by soybean paste and toilet paper.   Minimum acceptable waste removal thresholds of 250 grams (about 9 ounces) and 350 grams (12 ounces) are used by water efficiency advocates and water providers throughout North America for water conservation programs.  The U.S. Environmental Protection Agency’s WaterSense Product Labeling Program sets its minimum threshold at 350 grams; some water providers employ a 500 gram (about 18 ounces) minimum threshold for qualifying toilets for their rebate programs.

For a more complete history of MaP and how it developed, check this background description.  

Your customers have the opportunity to review the performance of hundreds of different toilet fixture models, all of which have been tested at independent laboratories. The following search parameters are available to customers, design professionals and manufacturers:

…and it’s FREE !

Since its development and release in 2003, MaP 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 about 350 grams (12 ounces), while by 2017, the average score had more than doubled to 882 grams (about 31 ounces) . . . view the graphic!   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 high-performance 21st century models, for which the manufacturers must be given great credit!

Remember, though, MaP is a VOLUNTARY testing program.  Manufacturers may choose to participate, but are under no compulsion to do so.   Therefore, your customers need to know that not all toilet models found in the marketplace (at retail outlets, distributors, or plumbing supply houses) will have been MaP tested.

For answers to frequently asked questions about MaP, check our FAQ page.