The Culligan IC-100 Icemaker / Refrigerator Dispenser Drinking Water Filter reduces the bad tastes & odors and aesthetic chlorine taste & odor often associated with tap water. The IC-100 is a Level 1 drinking water filter that connects to the back of the refrigerator using quick-connect fittings. You’ll enjoy ice, drinking water, and beverages with a clean, refreshing flavor. Culligan IC-100 provides water and ice with a clean, refreshing flavor. Level 1 Basic Filtration Reduces: Bad taste & odor and aesthetic chlorine taste & odor.