A sterilization apparatus for sterilizing containers, such as plastic water bottles employs ultra violet (UV) light sterilization technology in a portable fashion. The apparatus is a standalone unit that is intended for residential use, is portable, and is specifically configured to receive and treat multiple sized bottles without additional add-ons. The apparatus positions and includes features to hold the bottle in a horizontal position within the housing of the apparatus such that the horizontally oriented UV bulb is disposed within the inside of the bottle.
