2016-2018年大理市生活饮用水水质监测结果分析  

Analysis of monitoring results of drinking water quality in Dali City from 2016 to 2018

作　　者：程家国 宇柏成 谭晓东 刘敏 杨彩艳 CHENG Jiaguo;YU Baicheng;TAN Xiaodong;LIU Min;YANG Caiyan(Wuhan University School of Health Sciences,Hubei430000,China;不详)

机构地区：[1]武汉大学健康学院,湖北430000 [2]大理市疾病预防控制中心 [3]云南省第四人民医院

出　　处：《医学动物防制》2020年第10期986-989,共4页Journal of Medical Pest Control

基　　金：云南省财政厅云南省卫生健康委关于提前下达2020年基本公共卫生服务项目中央补助资金(云财社[2019]308号)。

摘　　要：目的分析2016-2018年大理市生活饮用水水质监测结果,了解大理市生活饮用水水质卫生状况,为制定科学的、合理的生活饮用水安全管理策略和大理市城市改水和农村改水提供参考依据。方法参照《生活饮用水标准检验方法》(GB 5750-2006)分别于2016-2018年在大理市生活饮用水供水点采集枯水期(1~3月)和丰水期(7~9月)的出厂水、末梢水各一份进行水质采集、运输、保存和检测,水质检测结果依据《生活饮用水卫生标准》(GB 5749-2006)进行评价。结果2016-2018年大理市共监测生活饮用水水样638份,总体合格率72.73%,各年水样合格率分别为61.53%、69.44%、86.91%,不同年份生活饮用水水质合格率间差异有统计学意义(χ^2=36.022,P<0.05);总体枯水期合格率为68.44%,丰水期合格率为49.84%,差异有统计学意义(χ^2=22.456,P<0.05);城市和农村生活饮用水合格率分别为91.10%、57.48%,差异有统计学意义(χ^2=96.469,P<0.05);3年饮用水水质监测不合格指标主要为总大肠菌群,其次为大肠埃希氏菌和菌落总数。结论目前微生物污染是大理市生活饮用水水质不合格的主要原因,各供水单位按要求修建消毒设施并严格消毒是保障大理市67.9万市民生活饮用水水质安全的主要措施。Objective To analyze the monitoring results of drinking water quality in Dali City from 2016 to 2018,and to understand the sanitary status of drinking water in Dali City in order to develop a scientific and reasonable management strategy for drinking water safety and provide a reference for urban and rural water improvement in Dali City.Methods According to the Standard Examination Methods for Drinking Water(GB 5750-2006),the samples of finished water and tap water were collected from the drinking water supply points in the dry season(January to March)and the wet season(July to September)respectively in Dali City from 2016 to 2018.Water quality collection,transportation,storage and examination were carried out on each sample of the finished water and the tap water.The water quality test results were evaluated according to the Sanitary Standards for Drinking Water(GB 5749-2006).Results From 2016 to 2018,a total of 638 drinking water samples were monitored in Dali City,with an overall pass rate of 72.73%.The pass rates of water samples in each year were 61.53%,69.44%,and 86.91%,respectively.There was statistically significant difference(χ^2=36.022,P<0.05).The overall pass rate was 68.44%in dry season and 49.84%in wet season.The difference was statistically significant(χ^2=22.456,P<0.05).The pass rates of drinking water in urban and rural areas were 91.10%and 57.48%,respectively.The difference was statistically significant(χ^2=96.469,P<0.05).The unqualified indicators of 3-year drinking water quality monitoring were mainly total coliform,followed by Escherichia coli and total number of colonies.Conclusion At present,microbial pollution is the main reason for the unqualified drinking water quality in Dali City.The construction of disinfection facilities and strict disinfection by various water supply units are the main measures to ensure the safety of drinking water quality of 679000 citizens in Dali City.

关 键 词：生活饮用水 水质 监测 结果分析 水质安全 

分 类 号：R123.1[医药卫生—环境卫生学]