By using a combination of KDF 85 and catalyzed carbon filtration media, the 22070 Hydrologic BigBoy carbon filter will help to significantly reduce scale, heavy metals, chloramines, chlorine taste and rotten egg smell, while inhibiting the growth of bacteria. A powerful filter that is ideal for significantly reducing most common water quality issues. Get the filter you need to ensure the highest quality water in your home by ordering the 22070 Hydrologic BigBoy carbon filter from us today!