Water suppliers often add disinfectants to drinking water to kill microorganisms like giardia lamblia and E coli. But while they may prevent microorganism caused illnesses, disinfectants are water contaminants themselves.
These radiological contaminants get into the water through certain soils, the disposal and storage of radioactive waste and phosphorous and uranium mining. They are, for the most part, naturally occurring, but human activity often contributes to their contamination of water. Very low levels are present in most drinking water and are not considered a health concern, but higher levels can be dangerous.
Byproducts are created when disinfectants react with organic matter present in the water.
Trihalomethanes, haloacetic acids, bromate and chlorite are byproducts of water disinfection. Problems with prolonged and increased exposure to these byproducts can include liver, kidney and central nervous system damage; higher risk of cancer; and anemia.
Whom it may concern
Disinfectant-related water contaminants are in most public water systems and, although claimed to be safe in small amounts, many people have concerns about their presence. Look for water filters that can remove chlorine and other disinfectants. Radionuclides are not a concern for most of the population, but for those with wells, yearly testing is a good idea. Reverse osmosis can filter both uranium and radium, and radon can be remedied through carbon filtering. Special disposal may be required, so talk to a professional.