Replace the H-104 cartridge (EV9612-11) yearly to reduce the following contaminants: ·Lead to below the Federal Action Level of 15 ppb ·Cysts such as Giardia lamblia, Entamoeba histolytica and Cryptosporidium parvum This cartridge also reduces: ·Chlorine taste and odor ·Dirt and cloudiness ·Mold and algae ·Oxidized iron ·Oxidized manganese ·Oxidized sulfides ·Particles 1/2 micron and larger in size ·Limescale build-up in appliances that use water The H-104 cartridge features: ·A 1/2 gallon per minute flow rate •A 1000 gallon capacity