trihalomethane

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tri·hal·o·meth·ane

 (trī′hăl-ə-mĕth′ān′)
n.
Any of several chemical compounds in which halogen atoms replace three of the hydrogen atoms normally present in a methane molecule. These toxic compounds can occur in chlorinated water as a result of reaction between organic materials in the water and chlorine added as a disinfectant.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

trihalomethane

(traɪˌheɪləʊˈmiːθeɪn)
n
(Chemistry) a type of chemical compound in which three of the hydrogen atoms in a methane molecule have been replaced by halogen atoms, esp by chlorine in drinking water. Trihalomethanes are thought to be carcinogenic
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
But last year Leominster exceeded the levels of trihalomethanes that the U.S.
What levels of trihalomethanes and chloramines are produced by a system that maintains a 0.4 ppm FAC residual?
KEY WORDS: blood THM, blood--water correlations, brominated THMs, noningestion water activities, trihalomethanes. Environ Health Perspect 120:661-667 (2012).
Current literature confirms that fresh air should be forced over the surface of the pool to eliminate chloramines and other chlorination byproducts such as trihalomethanes (3,6-9).
utilities apply Cl|O.sub.2~ to aid in the control of trihalomethanes. Although most of the oxidant is consumed during treatment, its byproducts--chlorite and chlorate ions--appear in distribution systems.
Effects of four trihalomethanes on DNA strand breaks renal hyaline droplet formation and serum testosterone in male F-344 -ats Cance Lett l0612):235-242 (1996), http://wwvv.ncbnm.hgov/pubmed/8844978.
The only SDWA regulations that emphasize distribution system sampling are those that deal with microbiological contamination, total trihalomethanes, and lead and copper corrosion control.
trihalomethanes [THMs]) focused attention on the Utica water system and routine violations of the maximum contaminants level (MCL) for THMs.
Trihalomethanes (THMs) are the DBPs found generally at the highest concentrations, and the most common THMs are chloroform, bromodichloromethane, dibromochloromethane, and bromoform.