KleenWater.com offers a full line of commercial 3M Purification (Cuno) compatible water filter replacement cartridges. These KleenWater brand cartridges are manufactured for the commercial food service industry. KleenWater cartridges are designed to enhance untreated water making beverages more tasteful while protecting water using appliances such as coffee makers and ice machines. To improve taste the KleenWater brand employs carbon block technology which adsorbs chlorine, chemicals and other taste / odor causing contaminants. Other active ingredients include KDF media for lead removal and polyphosphates to aid in ice clarity and to protect ice machine components.