SIPHONIC TOILET

A siphonic toilet including a bowl 103, a passageway 104 and a valve 105. The passageway 104 includes an entrance 141 fluidly connected to the bowl 103, an outlet 142, and a dam 143 located between the entrance 141 and the outlet 142, wherein the dam 143 and bowl 103 are configured to hold a first volume of water prior to a flush cycle. An inlet147 is located in the passageway 104 downstream from the dam 143 to introduce water into the passageway 104 downstream from the dam 143. The valve 105 is located between the inlet 147 and the outlet 142 of the passageway 104, and the valve 105 retains a second volume of water when in a closed position prior to the flush cycle of the toilet to affect a siphon during the flush cycle.