Abstract: A portable basin assembly and methods of use thereof are provided. The portable basin assembly includes a frame configured to convey the assembly along a support surface; a basin having a waste mounted atop the frame; at least one water outlet for directing a flow of water into the basin; and a mounting system for mounting at least one of a waste water tank and a clean water tank to the assembly. The mounting system includes: a docking interface for docking with and fluidly connecting at least one of the waste water tank to receive water from the waste of the basin and the clean water tank for providing a source of clean water; and at least one alignment member for aligning the at least one of the waste water tank and the clean water tank relative to the frame and the docking interface.