摘要
目的了解江门市区2002～2006年生活饮用水水质状况,为改善水质提供科学依据。方法按照GB/T8538-95、《生活饮用水卫生规范》(2001年版)进行实验检测,对市区现场抽检和被检单位送检的水质连续5年进行监测的结果进行统计分析。结果江门市区生活饮用水水质5年平均合格率为93.23%;合格率较低的项目主要是总大肠菌群、细菌总数、游离余氯、铁、浑浊度、pH值、耗氧量等项;各类水源水质项次合格率由高到低依次是:出厂水>管网水>水源水>二次供水,其中水源水、出厂水的合格率无统计学意义(P<0.05),二次供水、管网水2002～2005年的合格率亦无统计学意义,二次供水2006年的合格率高于2002、2003年有统计学意义,管网水2006年的合格率高于2002～2004年也有统计学意义(P<0.05)。结论5年江门市区生活饮用水水质的合格率逐年升高,但其生活饮用水水质卫生质量仍有待提高,应重点加强饮用水源的卫生防护和用户支管的更新、改造。
Objective To understand the drinking water condition in Jiangmen City druing 2002 - 2006, and provided scientific basis for improving drinking water quality. Methods Based on the Standards for Drinking water Quality （ GB/T8538 - 95） the data of five - year successtive monitoring of drinking water quality were analyzed. Results The average qualification rate of drinking water was 93.23 % in Jiangmen City druing 2002 - 2006, and the indicators with low qualification rates were coliform bacteria, bacteria count, free chlorine residual, iron, turbidity, pH, oxygen demand etc. The qualification rates were in the order of finished water, water supply pipes, source water, scondary supply water. There no significant differences were observed in qualification rate between source water and finished water, so did between the scondary supply water and water supply pipes. The qualifiaction rates of scondary supply water and water supply pipes were significantly enhanced in 2006 as compared with previous years. Conclusion The qualification rate of drinking water quality in Jiangmen City is improving year by year , but efforts including renovation and modification of branch water pipes and tubes be carried out to enhance the drinking water quality.
出处
《中国热带医学》
CAS
2008年第2期351-352,共2页
China Tropical Medicine
关键词
生活饮用水
水质
卫生
分析
Drinking water
Water quality
Hygiene
Analysis
