In one embodiment of the invention, a system for controlling the temperature of water in a water reservoir includes a water reservoir, an inlet operable to deliver water to the water reservoir, an outlet operable to dispense at least a portion of the water from the water reservoir, and a staged water cooler having a first thermoelectric cooler stage coupled to a second thermoelectric cooler stage, the staged water cooler operable to control the temperature of the water in the water reservoir.