北京市住宅小区管道直饮水设备水质卫生学调查

The Sanitary Study of Piping Drinking-water Systems in Beijing

[目的]了解目前北京地区管道直饮水设备卫生状况。[方法]随机选取北京地区14家使用管道直饮水设备的住宅小区,检测自来水(原水),设备出水和远端末梢水样。[结果]9个安装净水设备的住宅小区,有3个小区的pH值不合格,1个小区浑浊度超标,2个小区检出霉菌和酵母菌。5个使用纯水设备的小区各样品检测指标均符合相关标准。[结论]北京地区目前使用的管道直饮水卫生状况基本良好,但管网存在二次污染的可能性。

[Objective]Learn the basic state of piping drinkingwater systems in Beijing districts.[Methods]14 districts which own piping drinking-water systems were chosen.Tap water and production water were analyzed as well as distal water from 14 districts.[Results]Among 9 districts installed clean water equipment,pH value was not up to standard,turbidity was over the standard.Fungus and yeast were detected from 2 districts.Among 5 districts installed pure water equipment,all of indices accords with the standard.[Conclusion]The sanitary state of piping drinking-water systems in Beijing was probably well,however,the possibility of secondary pollution still exists in the pipeline.