| CPC E03C 1/22 (2013.01) [E03C 1/182 (2013.01)] | 8 Claims | 

| 
               1. A lavatory comprising: 
            a basin comprising a bottom surface, the basin configured to hold water; 
                a drain opening disposed in a horizontal portion of the bottom surface of the basin; 
                wherein the bottom surface of the basin comprises a projection formed integrally with the bottom surface of the basin; 
                wherein the projection is disposed over the drain opening such that the drain opening is at least partially obscured from a view of a user, 
                wherein the basin further comprises a chamber disposed beneath and in fluid communication with the drain opening; and 
                wherein the chamber is configured to receive a first fluid flow from the drain opening and provide a second fluid flow to a waste; and 
                a drainage assembly including an overflow pipe, at least a portion of the overflow pipe included within the chamber, the overflow pipe movable between a first position wherein water is capable of flowing out of the chamber without flowing through the overflow pipe and a second position preventing water from draining from the chamber until the basin is filled the basin to a predetermined volume. 
               |