Here is a quote from a review posted by Alex Wilson, executive editor of Environmental Building News and founder of BuildingGreen, LLC:
"The vacuum-assist flush mechanism helps the toilet effectively flush a significant quantity of waste using very little water. Using the now-industry-standard Maximum-Performance (MaP) testing protocol, the Stealth toilet is rated at 600 grams, in both the round-front and elongated-front models. This and other performance features have allowed the toilet to earn the EPA WaterSense label for high-efficiency toilets. According to Cecilia Hayward, the marketing manager at Niagara, the toilet also passes all IAPMO requirements for toilets, including a requirement that waste be effectively moved 40 feet along the drainline when the toilet is flushed."
You can read the full article here:
Niagara’s Innovative 0.8 gpf “Vacuum-Assist” Stealth Toilet
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