Gerber’s Viper Dual Flush MaP Premium high-efficiency toilet is one of the industry’s solutions for those looking for meaningful water-saving product options in the bathroom. A smart solution for residential, hospitality, and other applications, this two-piece toilet has two buttons on the top of the tank to dictate the flush rate — one flushing 0.9 gpf for liquid and one flushing 1.1 gpf for solid, making this toilet consume less than 1.0 gpf on average. The toilet is WaterSense-certified for its contributions to water conservation, which recognizes its high performance even at a lower flush volume.