2015年-2016年辽阳农村饮用水安全状况分析

Analysis of monitoring results for rural drinking water quality in Liaoyang during 2015-2016

目的了解辽阳市农村生活饮用水水质卫生现状,为农村改水工程规划和管理提供科学依据。方法对辽阳市2015年-2016年农村生活饮用水的监测数据进行统计分析。按照GB/T5749-2006《生活饮用水卫生标准》进行评价。结果辽阳市农村生活饮用水合格率较低。2015年水样合格率为32.54%,2016年水样合格率为36.70%。不合格项目主要是总大肠菌群、耐热大肠菌群、大肠埃希菌、菌落总数、肉眼可见物、浑浊度、铝、铁、锰、硝酸盐。丰水期与枯水期水质合格率差异有统计学意义(P<0.05)。结论辽阳市农村生活饮用水水质存在供水混凝沉淀、消毒等处理不到位现象,采取相应措施,对饮用水水源卫生防护和水质净化消毒处理;加强集中式供水管理和监督检测。

Objective To understand the current hygienic situation of rural drinking water quality in Liaoyang,so as to provide scientific basis for project planning and improvement of water quality. Methods The monitoring data of rural drinking water in Liaoyang from 2015 to 2016 were statistically analyzed. The results were evaluated according to GB/T5749-2006 the Drinking Water Sanitary Standard. Results The qualified rate of drinking water in rural areas of Liaoyang was low. The qualified rate of water samples was respectively 32. 57% and 36. 70% in 2015 and 2016. The unqualified items mainly included total coliform,thermotolerant coliforms,Escherichia coli,the total number of colonies,visible matter,turbidity,aluminum,magnesium,iron,manganese,nitrate. The difference of the water quality between in raining seasons and dry seasons had statistical significance（ P〈 0. 05）. Conclusion Water coagulation precipitation and unqualified disinfection treatment are the major problems in the rural drinking water of Liaoyang. So corresponding measures should be taken for the hygiene protection and purification and disinfection treatment on the drinking water sources,and centralized management and supervision should be strengthened.