江门市区2002-2011年生活饮用水水质卫生状况分析

Analysis on sanitary conditions of drinking water quality in Jiangmen City from 2002 to 2011

目的了解江门市区2010-2011年生活饮用水水质卫生状况,为改善水质提供科学依据。方法水样采集、保存和检验方法按(GB/T5750-2006)《生活饮用水标准检验方法》中的有关规定进行。检测结果按(GB/T5749-2006)《生活饮用水卫生标准》评价。结果江门市区生活饮用水水质10年平均合格率为76.29%。合格率低的项目主要是细菌总数、大肠埃希菌、总大肠菌群、耐热大肠菌群、霉菌+酵母菌、铁、锰、pH值、浑浊度和游离余氯。七类水样中的出厂水合格率最高为94.94%;其次管网水合格率为91.21%;再次是二次供水、直饮水、桶装纯净水、水源水和井水的合格率分别为87.84%、69.72%、54.06%、49.43%和30.56%。结论江门市区2002-2011年部分生活饮用水卫生指标超标较严重,尤其是井水、水源水、桶装纯净水和直饮水的卫生状况,应引起各级领导和有关部门的高度重视。

Objective To know about the sanitary conditions of drinking water quality in Jiangmen City from 2002 to 2011, so as to provide scientific basis for improving drinking water quality. Methods Water samples were collected and kept according to the relevant regulations in the ＂ health standards of drinking water＂ （GB/5750 -2006） . The results were evaluated according to the relevant regulations in the ＂ health stand- ards of drinking water＂ （ GB/5749 - 2006 ） Results The average qualified rate of the drinking water in Jiangmen City was 76.29% during the past 10 years. The indicators with low qualified rate were bacteria count, eseherichia coli, coliform bacteria, thermotolerant coliforms, mold and yeast, iron, manganese, pH, turbidity and residual chlorine. Among 7 kinds of drinking water samples, the qualified rate of the finished water was the highest, which was 94. 94%. The followed was the network water, and the qualified rate was 91.21%. The next was secondary supply water, direct drinking water, bottled purified water, source water and well water, and the qualified rate was 87.84% , 69.72% , 54.06% , 49.43% , 30. 56% , respective- ly. Conclusions The sanitary indicators of drinking water of Jiangmen City from 2002 to 2011 exceeded the standard seriously, especially well water, source water, bottled purified water and direct drinking water, which should be paid great attentions to by leaders and relevant departments.