Some fixtures are "high performance".
Some fixtures are "high efficiency".
MaP PREMIUM is BOTH!!
Last Updated: May 6, 2019
MaP PREMIUM-rated plumbing products provide superior performance and efficiency for residential or light commercial applications where water discharged from other fixtures, appliances, or processes, etc., near the toilet fixture can help transport waste through the drain pipes.
Qualifying tank-type residential/light commercial toilet fixtures must:
Be certified to WaterSense®
Have an effective flush volume no more than 4.0 litres (1.1 gallons*) – saving 17% more water than the current WaterSense® requirement! (Special unique requirements for dual-flush models)
Have a MaP flush performance score of at least 600 grams – 170% of the current WaterSense® requirement!
Complete list of MaP PREMIUM toilet models
List of MaP PREMIUM toilet models available in the U.S.A. (note: not all models are available in California)
List of MaP PREMIUM toilet models approved by the California Energy Commission for sale in California
*MaP PREMIUM rounds flush volumes to one decimal place. While we recognize that 1.1 gallons is slightly greater than 4.0-litres, it is our professional opinion that this difference is not materially significant.