The air-and-water sterilization apparatus for use with an ice machine includes a source of ultraviolet radiation, a first input, a first output, a water tube, an air chamber, an air treatment passageway, a second input, a first filter, a first damper, a third input, a second damper, a second filter, a fan, a second output, and a housing. The source of ultraviolet radiation is one or more ultraviolet lamps that are used to sterilize air and water before that are moved off to the ice machine or other appliance. The source of ultraviolet radiation, the water tube, the. air chamber, the air treatment passageway, the first filter, the first damper, the second damper, the second filter, and the fan are all encompassed in the housing to create a protected and compact sterilization apparatus