A hot tub is disclosed having a plurality of walls defining an upper perimeter and a central well for holding a measure of heated water. A recirculation system is provided comprising a pump in fluid communication with the well. The pump is configured to direct water from the well for treatment by at least one treatment device selected from the group consisting of a filter, a heater, and a chemical diffuser. A waterfall fountain extends along each of the plurality of walls along the upper perimeter. The waterfall fountain is in fluid communication with the pump downstream of the treatment device and is configured to receive at least a portion of water treated by the treatment device and to direct the treated water back into the well.