It is also used in DM plant filters, Tap water filters, Desalination plants, and Aquariums. These disinfection byproducts may increase the risk of certain cancers. The EPA mandates that public systems have less than 80 parts per billion (ppb) of THMs in their treated water. Activated Carbon filtration can be effective in removing chlorine, chloramines, and some disinfection byproducts. Some drinking water may be disinfected with chlorine or chloramines. During disinfection the reaction of chlorine with organic matter can produce compounds such as trihalomethanes (THMs) as byproducts.
Pesticides, such as Atrazine, also can pose a health risk if present in quantities above EPA guidelines. Activated carbon (AC) filtration can effectively reduce some of these organic chemicals as well as certain harmless taste and odour-producing compounds. Contaminants such as benzene, chlorobenzenes, trichloroethylene, carbon tetrachloride, methylene chloride, and vinyl chloride in drinking water may pose health risks if they are present in quantities above the EPA Health Advisory Level (HAL).