The treatment of municipal drinking water through granular activated carbon (GAC) has been proven to remove a variety of dissolved organic compounds and chemicals, including those which can cause taste and odor concerns. More recently, GAC has been found to effectively remove natural organic matter (NOM), thereby reducing the formation of harmful disinfection byproducts (DBP’s). DBPs are compounds formed by the chemical reaction between the disinfectant chemical and the NOM in the water. GAC removes NOM before it can react with disinfectant chemicals such as chlorine and chloramine to form DBPs during the disinfection process. Finally, GAC also removes many contaminants of concern (CEC), such as endocrine disrupting compounds (EDC), pharmaceuticals and personal care products (PPCP), and other emerging contaminants, such as perfluorinated compounds (PFCs), which are being discovered in our drinking water supplies.