2015-2019年成都市龙泉驿区生活饮用水监测结果分析  

Surveillance on Quality of Drinking Water in Longquanyi District of Chengdu From 2015 to 2019

作　　者：王玲 刘文艳 幸薇洁 陈娟 邹锟[2] WANG Ling;LIU Wenyan;XING Weijie;CEHN Juan;ZOU Kun(Longquanyi District Center for Disease Control and Prevention,Chengdu 610100,Sichuan Province,China.2 West China Research Centre of Rural Health Development,West China School of Public Health,West China Fourth Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China.)

机构地区：[1]成都市龙泉驿区疾病预防控制中心,成都610100 [2]四川大学华西公共卫生学院,成都610041

出　　处：《预防医学情报杂志》2021年第9期1251-1255,共5页Journal of Preventive Medicine Information

摘　　要：目的了解成都市龙泉驿区生活饮用水卫生现状及变化趋势,为本区饮用水管理提供科学依据。方法采集市政集中式供水、农村集中式供水、井水和水源水进行实验室检测,采用SPSS 16.0软件进行卡方检验、卡方趋势检验,非正态计量资料采用秩和检验。结果2015-2019年,分别监测龙泉驿区生活饮用水水样90份、72份、70份、75份和80份,合格率分别为77.8%、80.6%、92.9%、93.3%和91.2%,生活饮用水总体合格率呈升高趋势(χ2趋势=11.323,P=0.001),除2016年丰水期饮用水合格率高于枯水期外(χ2=5.675,P=0.017),其余各年度枯、丰水期饮用水合格率差异无统计学意义;2015-2019年,分别监测市政集中式供水水样48份、42份、40份、47份和50份,合格率分别为100%、92.9%、100%、100%和98.0%,不合格指标主要是氯化消毒副产物三氯甲烷;分别监测农村集中式供水水样36份、24份、24份、22份和24份,合格率分别为58.3%、79.2%、100.0%、100.0%和100.0%,合格率呈升高趋势(χ2趋势=21.938,P<0.001),主要不合格指标为二氧化氯消毒副产物氯酸盐;每年均监测井水水样6份,合格率分别为16.7%、0、16.7%、16.7%和16.7%,不合格指标主要为细菌学指标和硝酸盐氮(以N计);不同类型水源水均出现粪大肠菌群和总氮(以N计)超标现象,水库水的总氮高于江河水的总氮,两者差异有统计学意义(Z=88.5,P<0.001)。结论龙泉驿区市政集中式供水和农村集中式供水的主要不合格指标均为消毒副产物,消毒副产物应作为集中式供水的关注重点;龙泉驿区的井水与水源水均受到不同程度的污染,需进一步关注。Objective To understand the current situation and change trend of drinking water in Longquanyi District of Chengdu,in order to provide scientific basis for local drinking water management.Methods Samples of municipal centralized supplied water,rural centralized supplied water,well water and source water were collected for laboratory test.Chi-square test and chi-square trend test were conducted by SPSS16.0 software.Rank sum test was performed for non-normal measurement data.Results From 2015 to 2019,there were 90,72,70,75 and 80 drinking water samples monitored respectively in Longquanyi,and the qualified rates were 77.8%,80.6%,92.9%,93.3%and 91.2%,respectively.The overall qualified rate of drinking water showed an increasing trend(χ2=11.323,P=0.001).Except that the qualified rate of drinking water in the wet season was higher than that in the dry season in 2016(χ2=5.675,P=0.017),there was no significant difference in the qualified rate of drinking water between dry season and wet season in other years.From 2015 to 2019,48,42,40,47 and 50 municipal centralized water supply samples were monitored,and the qualified rates were 100%,92.9%,100%,100%and 98.0%,respectively.The main unqualified indicator was trichloromethane.The study monitored 36,24,24,22 and 24 water samples of centralized water supply in rural areas respectively,and the qualified rates were 58.3%,79.2%,100%,100%,100%,respectively.The qualified rate showed an increasing trend(χ2=21.938,P=0.000).The main unqualified indicator was chlorate.Six samples of well water were monitored every year,the qualified rate of well water was 16.7%,0,16.7%,16.7%and 16.7%,respectively.The main unqualified indicators were bacteriological index and nitrate nitrogen(N).The fecal coliform and total nitrogen(N)exceeded the standard in different types of source water.The total nitrogen in reservoir water was higher than that in river water,and the difference was statistically significant(Z=88.5,P=0.000).Conclusion The main unqualified indicators of municipal centralized supp

关 键 词：饮用水 饮水安全 水质监测 

分 类 号：R123.1[医药卫生—环境卫生学]