Austin Springs AS-WELL Well Water Kit with 120-volt UV Filter, 0.35 Post-Filter and Installation Hardware 10" Sediment Post-Filter to remove additional well water sediment and organic particles High performance UV Filter to remove bacteria and viruses that may be present in well water Provides additional protect against rust, bacteria, viruses and other well water contaminants Installs seamlessly with the Austin Springs Whole House Filter to complete the whole house filtration system for well water