2016—2018年广州市从化区某村生活饮用水水质监测结果

Surveillance results of drinking water quality of a village in Conghua District of Guangzhou City from 2016-2018

目的 了解广州市从化区某村生活饮用水的水质卫生状况,为保障村民饮用水健康提供科学依据。方法 2016-2018年选择广州市从化区某村内1个管网末梢水和4个井水为监测对象,参照GB/T 5750-2006《生活饮用水标准检验方法》开展水质检测,分析不同季度间管网末梢水和井水中相关项目水平,评价水质卫生状况。结果 2016-2018年管网末梢水、ZSM家、ZBA家、GXQ家和ZGF家井水的合格率分别为75.00%、0、0、3.03%和5.56%;管网末梢水不合格的项目是总大肠杆菌、耐热大肠杆菌、pH值、锰、菌落总数和浑浊度,合格率分别为88.89%、88.89%、94.44%、97.22%、91.67%和97.22%;井水不合格的项目是总大肠杆菌、耐热大肠杆菌、大肠埃希菌、pH值、菌落总数、浑浊度、氟化物、氨氮和肉眼可见物,合格率分别为23.40%、24.82%、83.69%、7.09%、82.27%、97.87%、97.87%、99.29%、97.87%和99.29%。不同季度间管网末梢水中总大肠菌群、耐热大肠菌群、大肠埃希菌和pH值合格率比井水高,且管网末梢水和井水的pH值差异无统计学意义。结论 广州市从化区某村管网末梢水水质状况一般,井水水质卫生状况较差,且更易受到外界环境的影响,农村饮水存在一定的安全隐患,应结合实际情况加强农村饮水安全卫生管理。

Objective To know the sanitation quality of drinking water in a village of Conghua District of Guangzhou City,provide scientific basis for ensuring villagers'drinking water health.Methods From 2016-2018,1 pipe network peripheral water and 4 wells from a village of Conghua District were chosen as the monitoring objects.The test was conducted according to the Standard Test Method for Drinking Water(GB/T 5750-2006),and the indicators related to pipe network peripheral water and well water were analyzed according to different types and quarters,to explore the hygienic status of water quality.Results From 2016-2018,the qualified rate of pipe network peripheral water and the well water from the households of ZSM,ZBA,GXQ and ZGF was 75.00%,0,0,3.03%and 5.56%,respectively.The unqualified indicators of pipe network peripheral water were total Escherichia Coli,heat-resistant Escherichia Coli,pH value,manganese,total number of colonies and turbidity,which the qualified rates were 88.89%,88.89%,94.44%,97.22%,91.67%and 97.22%,respectively.The unqualified indicators of well water were total Escherichia Coli,heat-resistant Escherichia Coli,Escherichia Coli,pH value,total number of colonies,turbidity,fluoride,ammonia nitrogen and visible matter,which the qualified rates were 23.40%,24.82%,83.69%,7.09%,82.27%,97.87%,97.87%,99.29%,97.87%and 99.29%,respectively.The qualified rates of total Escherichia Coli,heatresistant Escherichia Coli,Escherichia Coli and pH value pipe network peripheral water were higher than those of well water.And there was no statistically significant difference in the pH value between pipe network peripheral water and well water in different quarters.Conclusion The quality of pipe network peripheral water in a village in Conghua District of Guangzhou City is general,and the sanitary condition of well water is poor.Those suggest that there are certain safety risks in rural drinking water.Therefore,rural drinking water safety and sanitation management should be strengthened according to the actual situation.