eSpring Carbon Water Treatment System - Replacement Filter 11-0194( No UV light , Does not work for the UV light system ) Reduces particulate down to 0.2 microns, including asbestos, sediment, dirt, and scale. Allows beneficial minerals like calcium, magnesium, and fluoride to pass through. Dramatically improves the taste, odor, and clarity of water. NSF International certified to NSF/ANSI Standards 42 and 53. Water Quality Association Gold Seal certified.