南充市区水质与水性传染病调查研究

AN INVESTIGATION ON WATER QUALITY AND WATERBORNE DISEASES IN NANCHONG 

本文对南充市两自来水公司１９９５～１９９６年水源水、出厂水和管网水监测结果作了分析，结果表明，供水的感官性状及部分一般化学指标、细菌学指标是构成水质不合格的主要原因，其前三位指标为浑浊度、游离性余氯、总大肠菌群、超标率分别为５０．７４％、１８．３４％、５．３３％。毒理学指标符合ＧＢ５７４９－８５规定限量。水源水质符合规定标准要求。各类水样均检出三卤甲烷类化合物（ＴＨＭｓ）。与水有关传染病９６年较９５年明显增高，统计学上有非常显著性差异（Ｐ＜０．００１）。

Samples of raw ,treated and distributed tap water were collected from the Nanchong city and Gaiping supply companies dring 1995 to 1996,and according to ″standard methods for the Examination of Drinking Water (GB5750-85)″ sensory organ and port general chemical ,toxicological and bacterological indiced was measurcd The results showed that the turbidity ,the free residual chloiring (FRC) and the total coliforms in the municipal water supply was constiuted a main cause of unqualified for water quality ,the unqualified rates are 5074%, 1834%,533%,respectivelyThe chloroform (CHCL3)had been detected in all of water samples The morbidity rate of water related infectious diseases in 1996 was 12483/105 ,higher than that in 1995(9646/105 ),there was notably statistical diffetence (P<0001)Based on the monitoring data of the author,this paper explored on beyond permisible limit of bacterological index and water related infectious diseases increased