Our Water O3zonator is designed to freshly ozonate a glass of drinking water for increased oxygen and a fresher taste. Independent laboratory tests show the unit “sterilizes drinking water that is heavily contaminated with several different micro organisms.”* The unit is portable as it operates using 12 Volts. In addition to operating from the 12 Volt DC adaptor that comes with the unit, a 12 Volt battery can be used. Ozone output is greater than 200 mg/Hr. * Nova Biologicals, Inc., Texas, US