广州市某区2004-2008年生活饮用水水质监测结果分析  

Analysis of drinking water quality monitoring results in a district of Guangzhou from 2004 to 2008

作　　者：张文娟[1] 赖俊梅[1] 张锦周[2] 张文姬[3] 

机构地区：[1]南方医科大学公共卫生与热带医学学院毒理学系,广东广州510515 [2]深圳市疾病预防控制中心营养与食品卫生科,广东深圳518020 [3]西南大学生物技术学院,重庆400715

出　　处：《中华疾病控制杂志》2010年第12期1221-1223,共3页Chinese Journal of Disease Control & Prevention

基　　金：广东省自然科学基金博士启动项目(9451051501002539);南方医科大学公共卫生与热带医学学院院长基金(GW200825)

摘　　要：目的了解广州市某区生活饮用水水质的卫生安全状况,为生活饮用水的卫生监督及管理提供科学依据。方法对该区2004-2008年管网末梢水和二次供水水质监测资料进行统计分析,检测指标包括浑浊度、菌落总数、总大肠菌群、游离余氯。结果抽检水样的管网末梢水综合合格率为41.45%,二次供水为31.21%;年度检测合格率逐年上升。管网末梢水综合合格率比二次供水高,两者的4项常规监测指标总合格率高低分布相一致;两者各季度综合合格率差异有统计学意义,第二、三季度偏低,各为23.30%和20.00%。菌落总数指标合格率与季度总合格率分布一致,二次供水游离余氯合格率明显低于管网末梢水。结论广州市该区生活饮用水的水质综合合格率逐年升高,但仍偏低,有季度分布差异,应加强对生活饮用水的防护与卫生监督。Objective To investigate the sanitary situation of the drinking water in a certain district of Guangzhou and provide scientific basis for strengthening the supervision and management of drinking water supply.Methods Samples of the terminal tap water and the second water supply were analyzed by statistics from 2004 to 2008.The detective indicators included turbidity,total number of bacteria,total large intestine and chlorine. Results The total qualification rate was 41.45% for terminal tap water,and 31.21% for the second water supply.The annual qualification rate was raised.The total qualification rate of terminal tap water was higher than that of the second water supply.The total rates and the distribution of the qualified projects were same.The qualification rate of the quarters was significantly different,while the second and third quarter was 23.30% and 20.00%,respectively.The qualification rate of total bacteria was consistent in each quarter.The qualification rate of free residual chlorine in the second water supply was obviously lower than that in the terminal tap water.Conclusions The total qualification rate of the drinking water was raised year by year,but still low,with difference among the quarters.It should be enhanced for monitoring and guarding the quality of the drinking water.

关 键 词：生活饮用水 水质 二次供水 管网末梢水 

分 类 号：R123.1[医药卫生—环境卫生学]