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目的了解南京市溧水区学生饮用水的安全状况,为加强学生饮用水的监督管理措施提供科学依据。方法在全区中小学采集学生饮用水,按照国家标准方法进行检测。结果共检测样品479份,总合格率为86.8%;2012-2014年学生饮用水合格率分别为78.7%、87.9%和92.9%;菌落总数、色度、大肠菌群、浑浊度和余氯检测合格率由低到高分别为93.5%、97.9%、98.1%、98.3%和98.9%,其中菌落总数检测合格率最低,其他检测指标均合格;桶装纯净水和自制净水检测合格率分别为89.4%和77.7%,两者检测合格率比较差异有统计学意义(P<0.05);夏秋季节和冬春季节学生饮用水检测合格率分别为83.9%和91.0%,两者检测合格率比较差异有统计学意义(P<0.05)。结论溧水区学生饮用水受到了不同程度的污染,相关部门应采取综合性预防控制措施,加强监督管理,确保学生饮用水的安全。
Objective To understand the safety status of drinking water for students in Lishui District of Nanjing and provide a scientific basis for strengthening the supervision and management of drinking water for students. Methods Drinking water was collected from primary and secondary schools in the whole district and tested in accordance with national standards. Results A total of 479 samples were tested with a total pass rate of 86.8%. The pass rates of drinking water for 2012-2014 students were 78.7%, 87.9% and 92.9% respectively. The total number of colony, chroma, coliform bacteria, turbidity and residual chlorine The qualified rate was 93.5%, 97.9%, 98.1%, 98.3% and 98.9% from low to high respectively. The passing rate of the total number of colonies was the lowest, and the other test indexes were all qualified. The passing rate of bottled purified water and homemade purified water were 89.4% and 77.7%, respectively. The passing rates of the two tests were statistically significant (P <0.05). The passing rates of drinking water in summer and autumn and winter and spring were 83.9% and 91.0% There was statistical significance (P <0.05). Conclusion Lishui students drinking water have been polluted to varying degrees, the relevant departments should take comprehensive prevention and control measures to strengthen supervision and management to ensure that students safe drinking water.