Organic chemicals are chemical compounds derived from plants or animals, as well as other compounds of carbon.

A high quality carbon filter will remove more than 98% of organic chemicals from the water. These include THMs (chloroform), DBCP, lindane, TCEs (trichloroethylene), PCEs (tetrachloroethylene), carbon tetrachloride, 1,1,1-trichloroethane, chlorine, 1,2-dichloroethane, EDBs (ethylene dibromide), and PCBs.