Chanson C3 City Water Replacement Filter Package REPLACEMENT FILTER CARTRIDGES for the Chanson C3 City Water Filtration System 1 ea. Catalytic Carbon Filter - Addresses Chlorine, Chloramines, bad taste and odor 1 ea. KDF-85 / GAC - Addresses heavy metals, bacteria, sulfur, pesticides and nitrates 1 ea. Activated Alumina Filter - Addresses Fluoride, lead, and arsenic