2014年-2016年迁安市农村生活饮用水水质监测与分析

Monitoring results and analysis of drinking water in rural areas in Qian'an from 2014 to 2016

目的分析迁安市2014年-2016年农村生活饮用水卫生基本状况和变化趋势,为加强饮用水安全管理工作提供依据和技术支持。方法对迁安市所辖的19个乡镇供水点进行监测,分别在枯水期、丰水期分批采集出厂水、末梢水和分散式供水,按照GB/T 5750—2006进行水样采集、保存和检测,按照GB 5749—2006进行评价。结果 3年共检测农村生活饮用水258份,合格187份,总合格率为72.5%,2014年-2016年水质合格率分别为73.8%、69.8%、73.9%;枯水期和丰水期水质监测合格率分别为75.2%和69.8%;不合格指标中硝酸盐不合格率最高,为14.0%,其次是总大肠菌群,不合格率为8.1%。结论迁安市农村生活饮用水3年间水质卫生状况没有明显的改观,仍需加大农村生活饮用水的改水工程力度。

Objective To analyze the health status and the variation trend of rural drinking water in Qian＇an from 2014 to 2016,so as to provide basis and technical support for strengthening the safety management of drinking water. Methods The water supply stations in 19 towns of Qian＇an were monitored,and tap water,terminal water,non-central water were respectively sampled in flood seasons and dry seasons for storage and detection according to GB/T 5750—2006,and the evaluation was performed according to GB 5749—2006. Results A total of 258 water samples were detected,and 187 samples were qualified,with the overall qualified rate of 72. 5%,and the qualified rates were respectively 73. 8%,69. 8% and 73. 9% during 2014-2016. And the qualified rates in dry seasons and wet seasons were 75. 2% and 69. 8%; the highest unqualified item was nitrate（ 14. 0%）,followed by total coliform（ 8. 1%）. Conclusion The quality of rural drinking water in qian＇an has not been significantly improved in the past three years,but the efforts for improvement of the drinking water quality in rural area should be strengthened.