海口市琼山区2009～2011年农村生活饮用水监测结果分析

Results of monitoring of drinking water quality in rural areas of Qiongshan District of Haikou City(2009-2011)

目的通过对2009～2011年我区生活饮用水水质监测与调查,从整体上了解目前我区农村饮用水水质卫生状况,以便为相关部门制定科学、有效的改进措施提供参考和依据。方法现场调查和采样监测,收集2009-2011年琼山区农村中小型集中式供水的监测资料,依据《生活饮用水评价标准》(GB5749-2006)表1和表4中小型集中式供水和《生活饮用水卫生监督管理办法》进行评价。结果共检测水样96份,其中细菌总数、总大肠菌群和耐热大肠菌群合格率分别为86.46%、68.75%、71.88%;丰水期水样不合格率(45.83%)高于枯水期的(25.00%),差异有统计学意义(χ2=4.55,P<0.05);出厂水不合格率(33.33%),末梢水不合格率(37.50%),差异没有统计学意义(χ2=0.182,P>0.05)。结论微生物指标是影响我区农村生活饮用水水质的重要因素,加强对农村饮用水水源的卫生防护以及为现有的饮水工程增加消毒设备是当今条件下改善琼山区农村饮水安全的重要措施。

Objective To survey the drinking water quality for providing evidence in formulating monitoring mesures and improvement of drinking water qaulity.Methdos The daa of monitoring of drinking water from 2009-2011 were collected and the water samples were obtained from dedium and small colletive water supply sites on the spot and assessed based on＂ Drinking water assessment criteria＂（GB5749-2006）.Results Totally 90 water samples were detected,the qualitfication rates of total bacterium,total coliform group and hot-resistant coliform group were 86.46,68.75% and 71.88%.The under standard rate of water sample in water deficient period was 45.93% highe than that of 25.00% in water abundantperiod（χ2=4.55,P0.05）.The under standard rates of tap water and peripheral water were 33.33% and 37.50% without significant difference（χ2=0.182,P0.05）.Conclusion Microorganism contamination is the main facors influncing the drinking water quality in rural areas.Therefore strngthening the protection of drinking water sources in rural areas and increae the sterilization equipment by utilizing the water project available are the important measure for ganrantine the drinkin water qau.ity.