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目的了解承德市双桥区所辖乡镇学校生活饮用水水质卫生情况。方法对84所乡镇学校分散式供水饮用水源于枯水期和丰水期各采集水样一次,按GB 5749-2006《生活饮用水标准检验方法》进行检测,对监测结果按照GB 5749-2006《生活饮用水卫生标准》进行分析和评价。结果在2013年,承德市双桥区乡镇学校生活饮用水总体合格率为45.2%,枯水期和丰水期合格率分别为44.0%和46.2%,感官指标和一般化学指标平均合格率分别为89.3%和90.5%,毒理学指标平均合格率分别为92.9%和94.0%,微生物指标平均合格率分别为44.0%和46.4%。2013年双桥区乡镇学校生活饮用水不合格的项目主要有总硬度、硝酸盐(以氮计)、菌落总数和大肠菌群。结论承德市双桥区乡镇学校生活饮用水水质情况较差,加强学校饮用水卫生设施投入与监督管理、改善学校师生饮水条件和安全迫在眉睫。
Objective To understand the sanitary conditions of drinking water quality in villages and towns under the jurisdiction of Shuangqiao District of Chengde City. Methods Eighty-four township schools were randomly divided into two groups: water-based drinking water collected from dry and wet periods, and water samples collected according to GB 5749-2006 Standard Test Method for Domestic Drinking Water. The monitoring results were in accordance with GB 5749-2006 Drinking water health standards "for analysis and evaluation. Results In 2013, the overall pass rate of drinking water for township schools in Shuangqiao District of Chengde City was 45.2%, the pass rates in dry season and wet season were 44.0% and 46.2% respectively, and the average passing rates of sensory and general chemical indicators were 89.3% And 90.5% respectively. The average pass rates of toxicological indicators were 92.9% and 94.0% respectively. The average passing rates of microbial indicators were 44.0% and 46.4% respectively. In 2013, the items of unqualified drinking water in township schools in Shuangqiao District included total hardness, nitrate (calculated as nitrogen), total number of colonies and coliform bacteria. Conclusion The water quality of drinking water in township schools in Shuangqiao District of Chengde City is poor. It is urgent to strengthen the investment and supervision of school drinking water sanitation facilities and to improve the drinking water conditions and safety of school teachers and students.