Reduces bad taste, odors, sediments, bacteria, chlorine and much more. Features one replaceable filter cartridge. Filtration begins with water traveling through a porous shell with openings not greater than 5 Micron in Diameter. Filtered water then passes through a bed of KDFR and GAC (Granulated Activated Carbon) for further filtration and bacteria control. The result is fresh clean, great tasting drinking water straight from your tap. For exterior use.