本文报告了华南水灾后某部１９个生活饮用水源的调查结果。其中４２％的水源呈开放状态，８４％的水源无消毒设施，网末水水质检验结果与上年同期比较，浊度、氨氮、亚硝酸盐氮、大肠菌群、细菌总数等合格率显著下降；受灾部队４７．３％的水源受到不同程度污染，水质明显下降，对部队夏季防病工作威胁较大。 This article reports the findings of a survey of 19 drinking water sources in some parts of South China following a flood. Among them, 42% of the water sources were open and 84% of the water sources were non-sterile. Compared with the same period of last year, the net water quality test results showed that the passing rates of turbidity, ammonia nitrogen, nitrite nitrogen, coliform bacteria and total bacteria were significantly decreased 47.3% of the water sources affected by the disaster were polluted to varying degrees and the water quality obviously dropped, posing a great threat to the troop’s summer disease prevention work.