2017年——2020年三门县生活饮用水监测结果分析  

Analysis of drinking water monitoring results in Sanmen County from 2017 to 2020

作　　者：黄正娟 王子友[1] 潘爱军[1] HUANG Zheng-juan;WANG Zi-you;PAN Ai-jun(Sanmen County Center for Disease Control and Prevention,Sanmen,Zhejiang 317000,China)

机构地区：[1]三门县疾病预防控制中心,浙江三门317000

出　　处：《中国卫生检验杂志》2021年第22期2799-2801,F0003,共4页Chinese Journal of Health Laboratory Technology

摘　　要：目的分析三门县2017年—2020年生活饮用水水质状况,为供水质量改善提供依据。方法选择有代表性的点进行调查和水质监测,采样、检验及评价按照GB/T 5750—2006、GB 5749—2006进行。结果2017年—2020年三门县农村生活饮用水水质总合格率为78.47%,其中出厂水合格率低于末梢水合格率(分别为64.58%和82.44%),枯水期与丰水期水质合格率差异无统计学意义(P=0.725)。项目指标合格率为97.72%,主要不合格指标为游离余氯(15.51%)、总大肠菌群(14.58%)、耐热大肠菌群(13.89%)、大肠埃希菌(13.89%)、浑浊度(8.33%)、肉眼可见物(7.18%)。农村饮用水游离余氯、总大肠菌群、耐热大肠菌群、大肠埃希菌4项指标合格率明显低于城市饮用水(P<0.05)。结论三门县水质状况总体良好,水质合格率和各项监测指标均处于逐年改善的趋势,但仍存在部分水质不合格情况,相关部门应从水源保护、改善水处理工艺、加强饮用水安全宣传等方面制定进一步的方案,促进居民饮水安全的提升。Objective To analyze the quality of drinking water in Sanmen County from 2017 to 2020,so as to provide basis for the improvement of water quality.Methods Representative monitoring sites were selected for investigation and the monitoring of water quality,sampling,inspection and evaluation in line with GB/T 5750-2006 and GB 5749-2006.Results From 2017 to 2020,the qualified rate of drinking water in Sanmen County was 78.47%,and the qualified rate of factory water was lower than that of peripheral water(64.58%and 82.44%,respectively).There was no statistical significance on the difference in the qualified rates of water quality between in the dry season and in the wet season(P=0.725).The qualified rate of the indicators was 97.72%.The main unqualified indexes contained free residual chlorine(15.51%),total coliform group(14.58%),heat resisting coliform group(13.89%),Escherichia coli(13.89%),turbidness(8.33%)and visible matters(7.18%).The unqualified rate for rural drinking water was significantly higher than that of urban drinking water in terms of free residual chlorine,total coliform group,heat resisting coliform group,Escherichia coli(P<0.05).Conclusion The water quality was generally good,and the water quality rate and monitoring indexes were improved year by year.Still,there were some water unqualified indexes.The departments concerned should make further plans from the respects of water source protection,improvement of water treatment techniques and strengthening of publicity of drinking water safety,in order to promote the safety of drinking water.

关 键 词：生活饮用水 水质监测 饮水安全 

分 类 号：R123.1[医药卫生—环境卫生学]