2009-2013年辽宁省朝阳县农村生活饮用水微生物污染状况分析

Analysis of Microbial Contamination in Drinking Water in Chaoyang County of Liaoning Province,2009-2013

目的了解辽宁省朝阳县农村2009-2013年生活饮用水微生物的污染现状及趋势,为防止水源性疾病暴发与流行提供科学依据。方法对朝阳县5年间生活饮用水微生物检测结果进行统计分析。结果 2009-2013年共检水样1992份,总合格率为75.3%,各年度合格率呈逐年上升趋势,二次供水合格率高于小型集中式供水,检测项目中菌落总数超标最多(合格率为75.9%),第三季度水质合格率最低。结论辽宁省朝阳县农村生活饮用水微生物污染较重,水质污染情况与水质净化消毒情况及季节有相关性。

Objective To understand the water pollution status and the trend of microbial contamination in drinking water in the rural area of Chaoyang county during 2009-2013,for prevent the outbreak of waterborne diseases and epidemic. Methods The microbiological test results of drinking water in Chaoyang county during the 5years were statistically analyzed. Results During the period,a total of 1992 water samples were tested,with the total qualified rate of 75. 3%. The qualified rate had been rising year by year. The qualified rate of secondary water supply was higher than that of the small central water supply. The total number of colonies was the most severe,with the qualified rate of 75. 9%. The third quarter exhibited the lowest qualified rate of water quality. Conclusion The microbial contamination of drinking water in rural areas of Chaoyang county is relatively sever. The water pollution is associated with water quality purification / disinfection and season.