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目的调查１９８０年～１９９２年全国铁路水电段集中式给水的污染事故。方法采用表格填报污染事故发生的有关情况。结果１３ａ共发生污染事故２０次，平均每年１．５４次；１３１５９３人在污染期间不能正常饮用自来水，４５６８人发病；引起污染事故的主要途经是水源污染（占８０％），污染物中生活污水和粪便占６０％，工业废水与化学物质占３５％。结论各级水电和卫生防疫部门都应就安全供水采取有力措施，杜绝集中式给水污染事故的发生。
Objective To investigate the pollution incident of centralized water supply in the national railway hydropower from 1980 to 1992. Methods The form is used to fill in the information about the occurrence of pollution accidents. Results A total of 20 pollution accidents happened in total of 13a, with an average of 1.54 times per year; 131,593 people were unable to drink tap water normally during the pollution period, and 4568 people were affected; the main causes of pollution accidents were water pollution (80%), domestic sewage And faeces accounted for 60%, industrial waste water and chemicals accounted for 35%. Conclusions All levels of hydropower and health and epidemic prevention departments should take effective measures for safe water supply to eliminate the occurrence of centralized water supply pollution accidents.