ULTRA-VIOLET WATER STERLIZATION: 2GPM TO 200GPM FOR DRINKING WATER , WASTE WATER TREATMENT , BOTTLED WATER STERILIZATION PREVENTIVE BACTERIA , VIRUS & MOLDS U.Violet is known to be highly effective against bacteria, viruses, algae, molds and yeasts, and giardia. In practice, bacteria and viruses are the cause of most major water- borne pathogenic diseases but are readily eliminated by U.V treatment. For most microorganisms, the removal efficiency of U.V for microbiological contaminants such as bacteria and virus 99.99%.