Gwogo&reg; 3-stage Advanced Faucet Water Filter Mount Chrome Gw-158,Testing by the FDA Designed by American High density ceramic filter can remove the granule of all sizes, such as sand, dirt, iron scale. Activated carbon filter of five micrometer: it can remove residual chlorine, smell, flavor and volatile organic compound and some common chemical substances,Improves water taste It uses non-woven fabrics filter mesh which is used in medical filed and its aperture is one micrometer, it can deodorize the floating object in the water, rust effectively and other impurities whose size is bigger than one micrometer It can reduces lead, chlorine taste and odor, Cryptosporidium and Giardia cysts