Trihalomethanes (THMs) are categorized as which type of contaminant?

Prepare for the American Water Works Water Treatment Plant Operator Test. Study with multiple choice questions, each with hints and explanations. Get ready to excel!

Trihalomethanes are disinfection byproducts formed when chlorine or other disinfectants react with natural organic matter in the water. These compounds are carbon-based and contain halogens, which classifies them as organic contaminants. They are not inorganic contaminants (such as metals or minerals without carbon), not biological contaminants (living organisms), and not radiological contaminants (radioactive materials).