An on-demand cooling system for a beverage dispenser includes a cooling enclosure, a first cooling chamber, a second cooling chamber, and a refrigeration system communicating with the cooling enclosure, the first cooling chamber, and the second cooling chamber. The cooling enclosure receives water therethrough from a water source or a recirculation system. The refrigeration system chills the water flowing through the cooling enclosure prior to the water exiting the cooling enclosure into the first cooling chamber. The refrigeration system chills the water within the first cooling chamber prior to the water exiting the first cooling chamber into the second cooling chamber. The refrigeration system chills the water within the second cooling chamber, thereby providing chilled water for the beverage dispenser.