The Everpure 7TO Carbon Filter Cartridge contains granular activated carbon that helps reduce chlorine taste, unpleasant odors, and other contaminants in your drinking water. This Everpure Filter Replacement also effectively reduces chloramines from your water. This filter cartridge is ideal to use as a pre-filter for Reverse Osmosis membranes that are sensitive to chlorine. The Everpure 7TO can be used for extremely turbid water.