一、问题的产生曾报导莱茵河下游水中有有机氯化合物,其浓度相当可观,以三氯甲烷为主要成份的三卤甲烷占大部分,其后报导在密西西比河下游的新奥尔良地区,用于消毒的氯与原水中的有机物起反应形成三卤甲烷,饮用此水的人们的癌发病率与不饮此 First, the problem has been reported in the lower reaches of the Rhine organic chlorine compounds, the concentration is considerable, trihalomethanes with trichloromethane as the main component of the majority, and later reported in the New Orleans region downstream of the Mississippi, for Disinfected chlorine reacts with organic matter in the raw water to form trihalomethanes, and the cancer incidence and non-drinking of people drinking this water