Everpure's OW2 Replacement Cartridge reduces chlorine taste and odor and other offensive contaminants, such as lead, cysts, scale, total dissolved solids and trihalomethanes. It provides delicious, healthy drinking water to bottless coolers, drinking fountains and other office water applications. This cartridge is the replacement cartridge for the QL2-OW2 Drinking Water System, also known by part number EV9275-70. The OW2-Plus features a precoat submicron technology that filters out particles as small as 0.5 micron, it also reduces asbestos fibers and cryptosporidium and giardia cysts. The OW2 also features a KDF media specifically designed to inhibit limescale build-up.