南丹县2006年-2011年农村饮用水监测结果分析

目的:了解南丹县农村饮用水水质状况,对2006年-2011年南丹县农村饮用水监测结果进行分析。方法:每年采集枯水期和丰水期水样按《生活饮用水标准检验方法》(GB/T5750-2006)进行检测分析。结果:599份水样不合格项目主要为浑浊度、肉眼可见物、砷、氨氮、菌落总数、总大肠菌群、耐热大肠菌群,水样总合格率为23.04%,年度合格率有显著性差异(χ2=26.19、P<0.01),枯水期与丰水期合格率有显著性差异(χ2=13.11、P<0.01),出厂水与末梢水合格率无显著性差异(χ2=1.39、P>0.05)。结论:南丹县农村饮用水水质卫生状况较差,合格率低,因此应加强农村饮用水水质监测,以保障农村饮水安全。

Analysis of rural drinking water monitoring results from 2006 to 2011 in Nandan county

Objective:To understand the drinking water quality in rural areas of Nandan County,and analyze the rural drinking water monitoring results from 2006 to 2011.Methods: The water samples in wet seasons and dry seasons were collected and analyzed annually according to Standard inspection method for drinking water(GB/T 5750-2006).Results: The items for 599 samples unqualified were mainly visible objects,turbidity,arsenic,ammonia nitrogen,total bacteria,total coliforms,thermotolerant coliform bacteria.The total pass rate was 23.04%.The annual qualified rates were significantly different(χ2=26.19,P<0.01),and the qualified rates had significant differences between dry seasons and wet seasons(χ2=13.11,P<0.01).But there were no signfificant differences between the factory water and tip water(χ2=1.39,P>0.05).Conclusion: The rural drinking water quality in Nandan county is poor,the water quality monitoring should be strengthened to ensure the safety of rural drinking water.