2006年濮阳市城区二次供水卫生状况调查

Survey on the Sanitary State of Urban Secondary Water-supply in Puyang in 2006

[目的]了解濮阳市城区二次供水的卫生状况。[方法]现场查询二次供水基本卫生状况,同时采集低位水池,高位水箱和末梢水水样,依据《生活饮用水卫生规范》(2001)进行检验和评价。[结果]二次供水存在的主要问题是余氯含量低和微生物指标超标,不带有低位水池的二次供水方式的微生物学指标合格率(总大肠菌群93.9%、细菌总数97.0%)明显高于带有低位水池的二次供水方式(大肠菌群5/9、细菌总数6/9),二者差异有统计学意义(P<0.05)。[结论]加强预防性卫生监督,建议采用不带地下水池的二次供水方式,二次供水单位要完善卫生管理制度,做好水质消毒工作。

[Objective]To understand the sanitary state of urban secondary water-supply in Puyang. [Methods]Inquire about sanitary condition of secondary water-supply on the spot and samples from underground pool, high building water tank and ending pipe water were collected and tested according to ＂Sanitary Standards for Drinking Water（2001）＂. [Results]The main problems were that the content of residual chlorine was lower and the index of microbes was higher than the standards. The qualified rate of the microbiological index of secondary water-supply without underground pool （total coli group 93.9 %, total amount of bacteria 97. 0 %）was higher than that with underground pool （total coli group 5/9, total amount of bacteria 6/9）and there were significant differences between them. [Conclusion] Preventive hygienic supervision should be strengthened and the secondary water-supply system without underground pool is recommended. The secondary water-supply units should perfect its hygienic management system and do well in water chlorination.