2013年大连市生活饮用水水质监测结果分析

目的了解大连市生活饮用水水质卫生状况。方法按照GB 5749-2006《生活饮用水卫生标准检验方法》采集的不同供水点生活饮用水进行检测的。结果 2013年共检测水样744份,合格率为45.56%。城市与农村生活饮用水的合格率分别为92.31%,20.63%（P〈0.01）。市政管网末梢水合格率89.29%低于市政供水出厂水合格率100.00%,城市单位自备供水合格率75.00%,农村集中式供水合格率21.56%,农村学校自建供水合格率11.36%。城市检测合格率较低的项目有：浑浊度（94.32%）、铁（98.48%）、余氯（98.48%）;农村检测合格率较低的项目有：余氯（26.67%）、硝酸盐（80.63%）、总大肠菌群（90.83%）、菌落总数（91.04%）。结论城市重点加强自来水管网清洁维护及加强单位自备水卫生监管。应加大农村生活饮用水监管力度,确保农村集中式供水卫生消毒制度落实。

Analysis on Monitoring Results of Drinking Water Quality,Dalian City,2013

Objective To understand the quality of drinking water in Dalian city. Methods Drinking water samples collected from different water supply sources samples were detected according to Standard Test Method for Drinking Water（GB 5749-2006）. Results In 2013,744 samples were detected,with the qualified rate of 45.56%.The qualified rates of urban and rural drinking water samples were 92.31% and 20.63%（P 0.01）.The qualified rate of municipal pipe network peripheral water was 89.29%,which was lower than the qualified rate of finished water of municipal centralized water supply system,with a pass rate of 100.00%.The qualified rate of providing for oneself water supply in city units was 75.00%.The qualified rate of centralized water supply system in rural areas was 21.56%.The qualified rate of self-built water supply system in rural schools was 11.36%.In urban,the lower qualified rate items were turbidity94.32%,iron 98.48%,chlorine 98.48%.In rural,the low qualified rate was found in chlorine 26.67%,nitrates 80.63%,total coliforms 90.83%,total bacterial count 91.04%. Conclusion It is necessary to reinforce the cleaning and maintenance of urban water pipeline,enhance the supervision on unit provided water quality,strengthen the supervision on rural living and drinking water,and ensure the implementation of sanitary disinfection system in rural centralized water supply.