西安铁路局2006—2009年生活饮用水微生物指标监测结果分析

Analysis on Monitoring Results of Microorganism Indexes in Drinking Water of Xi'an Railway Administration during 2006-2009

目的了解西安铁路局管内生活饮用水微生物污染状况,为卫生行政部门决策提供依据。方法用4年时间对812份生活饮用水的微生物指标,按国家有关标准方法进行检测和评价。结果 812份水样的微生物指标中合格737份,合格率90.8%,其中集中式水源合格率为95.8%;分散式水源合格率为85.3%。从2006年至2009年微生物指标检测合格率逐年升高。75份不合格样品中分散式水源的各项微生物指标不合格样品数均高于集中式水源,且各项微生物指标不合格的样品数从2006年至2009年均呈下降趋势。结论集中式水源的微生物检测情况明显好于分散式供水水源,2006—2009年西安铁路局水源微生物检测结果合格率逐年提高与不断加大水源卫生监督、监测力度有关。

[Objective] To understand the microbial contamination of drinking water in the popedom of Xi＇an railway administration,provide the basis for decision-making.[Methods]According to the relevant national standard method,the microorganism index of 812 drinking water samples was tested and evaluated in 4 years.[Results]737 of 812 drinking water samples were qualified,and the qualified rate was 90.8%.The qualified rate of centralized water source and scattered water source was 95.8% and 85.3% respectively.From 2006 to 2009,the qualified rate of microorganism indexes increased year by year.Among 75 unqualified samples,the unqualified samples number of scattered water source was more than that of centralized water source,and the unqualified sample number showed a descending trend during 2006-2009.[Conclusion]The microbial detection reaults of centralized water source was better than that of scattered water source.During 2006-2009,the qualified rate of microorganism indexes in water sources of Xi＇an railway administration increased year by year,which was benefit from powerful health supervision and surveillance.