From the one and only manufacturer Saniflo, the Sanistar toilet disposes waste from the toilet and pumps away water from a hand basin sink. Waste and water can be pumped up to 9 feet vertically or up to 100 feet horizontally. By pressing a button, the timer and water valve are activated in order to fill and wash the sides of the bowl. A super great unit! Sanistar is a low consumption toilet: just a little more than a gallon per flush (4 liters) of water. See manufacturers installation instructions and guidelines. ..