中文摘要：

目的了解湖南某高校学生宿舍区管道直饮水的微生物指标。方法 2015年7月上旬,收集某院校3个学生宿舍区12栋学生宿舍楼直饮水及末梢水,查微生物指标,共采集样本120件,运用平板菌落计数法查菌落总数,乳糖蛋白胨培养法检测大肠菌群。结果直饮水合格率为98.33%（59/60）,末梢水合格率为95.00%（57/60）,差异无统计学意义（χ2=1.0258,P〉0.25）;直饮水平均菌落总数为（19.69±3.20）,末梢水平均菌落数为（20.78±4.49）,差异无统计学意义（t=1.5313,P〉0.1）。北校区、致远园的直饮水与末梢水菌落总数差异均无统计学意义（t=1.1283,P〉0.2;t=1.3891,P〉0.1）,南校区末梢水菌落总数高于直饮水（t=7.3489,P〈0.01）。3个校区的直饮水菌落总数差异无统计学意义（F=3.6947,P〉0.05）,南校区末梢水菌落总数多于其他2个校区（F=9.3618,P〈0.05）。直饮水及末梢水均未检测到总大肠菌群。结论该高校学生宿舍区直饮水、末梢水微生物指标均达到《GB5749-2006生活饮用水卫生标准》。

英文摘要：

Objective To investigate the microbiological indicators of direct drinking water and tap water of student dormitories in a university. Methods A total of 120 samples, including 60 samples of direct drinking water and 60 samples of tap water, were collected from 12 student dorm buildings of a university in July, 2015. The bacterial colony was counted with the plate count method, and the coliforms were detected with the lactose peptone culture method. All the results were analyzed statistically. Results The percent of pass of direct drinking water was 98.33%（ 59/60） while tap water was 95.00%（ 57/60）, and the difference between them was not statistically significant（χ2= 1.0258, P 〉0.25）. The average aerobic bacterial count of direct drinking water was 19.69±3.20 while the tap water was 20.78 ± 4.49, and the difference between them was not statistically significant（t=1.5313, P〉0.1）. The differences of aerobic bacterial counts between the direct drinking water and tap water in North Campus and Zhiyuan g／Garden were not statistically significant（t =1.1283, P 0.2; t = 1.3891, P 〉0.1） but the aerobic bacterial count of tap water was more than that of direct drinking water in South Campus（t = 7.3489, P 〈0.001）.The differences of aerobic bacterial counts of direct drinking water among 3 campus were not statistically significant（F=3.6947, P 〉0.051） but the aerobic bacterial count of tap water in South Campus was highest than that in the others（F=9.3618, P〈0.05）. The coliform was not found in both direct drinking water and tap water. Conclusion The microbiological indicators of both direct drinking water and tap water in the student dormitories of the university are met the criterion of GB5749-2006 hygienic standard for drinking water.