Trihalomethanes THM

Meaning, Term, and Glossary Definition - What is Trihalomethanes THM?

Trihalomethanes (THM) is a family of organic compounds named as derivative of methane. THMs are generally by-products of chlorination of drinking water that contains organic material.

Trihalomethanes consist of four chemicals (chloroform, bromodichloromethane, dibromochloromethane, and bromoform) that are formed along with other disinfection byproducts when chlorine or other disinfectants used to control microbial contaminants in drinking water react with naturally occurring organic and inorganic matter in water.

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Related glossary terms:

Total Trihalomethanes TTHM   
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Analytical testing dots