It has been used for many years in water treatment systems for the elimination of chlorophenols , the oxidation of inorganic compounds such as iron and manganese, and in the control of taste, odor and colorIt is recognized by the EPA as a primary disinfectant and is effective against
viruses, bacteria and protozoa, including the cysts of Giardia and the oocysts
of Cryptosporidium. Chlorine dioxide does not react with ammonia to form
less-active chloramines. It will not form trihalomethanes (THM’s) or other
chlorinated organic compounds, nor will it react with the many impurities that
normally consume chlorine.