Abstract: An apparatus for cooling drinking water in combination with a conventional refrigeration system of a type including a compressor, a condenser and an evaporator. A container having insulated walls and a sealed chamber is provided and has the evaporator therein in the shape of a substantially helically shaped coil. The substantially helically shaped water pipe inserted inside of the helically shaped freon pipe whereby a larger volume of water will be maintained cold by using a helically shaped freon and water pipe than if a straight water pipe were to be used in the cooling chamber. Additionally, because of the small cross section of the water pipe, the cold water will pass out of the cool chamber without mixing in any substantial way with warmer water entering the helical water pipe.