2009～2014年溧阳市农村饮用水监测

Monitoring of rural drinking water,Liyang city,2009-2014

目的了解溧阳市农村饮用水水质状况及其影响因素。方法分别于2009～2014年每年的枯水期和丰水期,采集12个监测点出厂水和末梢水进行水样检测,并根据饮用水水质监测结果进行统计分析。结果 2009～2014年检测水样294份,合格226份,合格率为76.87%,各年合格率分别为56.25%、58.33%、75.00%、89.58%、89.58%、90.74%（P〈0.05）。检测项目6 468项次,合格6 362项次,合格率为98.36%,不合格项目包括浑浊度、余氯、菌落总数、耐热大肠菌群、耗氧量、氨氮、肉眼可见物。合格率丰水期（82.67%）高于枯水期（70.83%）（P〈0.05）。大中型水厂（77.78%）高于小型水厂（75.00%）（P〉0.05）,出厂水（77.78%）高于末梢水（76.00%）（P〉0.05）。结论溧阳市农村饮用水水质整体状况较好。

Objective To understand the quality and influencing factors of rural drinking water in Liyang city. Methods During 2009-2014,factory and end water samples were collected respectively in dry season and wet season from 12 monitoring points for testing,and statistical analysis was made according to the drinking water quality monitoring results. Results Atotal of 294 water samples were detected during 2009-2014,226 were qualified,the qualified rate was 76.87%.The qualified rate was 56.25%,58.33%,75.00%,89.58%,89.58%,and 90.74% each year（P〈0.05）.The test items were 6 468item/times,6 362item/times were qualified,the qualified rate was 98.36%,the unqualified items were turbidity,residual chlorine,total bacterial count,thermotolerant coliform bacteria,oxygen consumption,ammonia,and visible matter.The qualified rate in wet season（82.67%）was higher than that in dry season（70.83%）（P〈0.05）.That in large and medium-sized waterworks（77.78%）was higher than that in small waterworks（75.00%）（P〈0.05）;that of the factory water（77.78%）was higher than that of tap water（76.00%）（P〉0.05）. Conclusion The overall water quality of rural drinking water in Liyang city is better.