氯仿是饮用水中最常见的三卤甲烷（THM），已被证明是啮齿动物的致癌物，因此对饮用水消费者构成风险。通过使用不产生三卤甲烷的消毒剂、在氯化前降低前体浓度或在形成后减少三卤甲烷，可以实现三卤甲烷的减少。为减少三卤甲烷而对现有处理设施进行改造时，必须仔细控制，以确保饮用水的微生物质量不受影响。 讨论了氯胺、二氧化氯和臭氧的处理技术考虑。包括29个参考文献、表格和图表。

Chloroform is the most common trihalomethane (THM) in drinking water and has been shown to be a carcinogen in rodents, thus posing a risk to consumers of drinking water. Reduction of THMs can be accomplished by using a disinfectant that does not generate THMs, by reducing precursor concentrations prior to chlorination, or by reducing THMs after formation. Modification of existing treatment facilities for THM reduction must be carefully controlled so that the microbiological quality of the drinking water is not compromised. Treatment technology considerations, chloramines, chlorine dioxide, and ozone are discussed. Includes 29 references, tables, figures.