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目的了解厦门市近3年各类生活饮用水卫生状况及变化趋势,保障居民饮水卫生安全。方法据GB 5749-2006《生活饮用水卫生标准》对2010—2012年厦门市各类生活饮用水监测结果进行统计分析。结果 2010—2012年出厂水合格率分别为100.0%、85.3%和83.3%,2011和2012年合格率较低,不合格指标主要为pH值、浑浊度、铁和微生物,2012年市政水厂出厂水合格率(94.4%)高于乡镇水厂(66.7%);3年末梢水合格率分别为83.3%、86.3%和88.6%,呈逐年上升趋势,主要不合格指标为游离余氯、浑浊度、铁和微生物,其中2010和2011年游离余氯不合格率为20.0%和19.3%;3年二次供水合格率分别为71.9%、70.2%和81.3%,主要不合格指标是游离余氯、浑浊度、铁和微生物,主要是游离余氯不合格率较高;3年农村井水合格率分别为0、25.9%和31.3%,呈逐年上升趋势,主要是微生物指标不合格率较高。结论厦门市生活饮用水尚存在微生物污染的安全隐患,今后要加强卫生督导,确保饮用水的卫生安全。
Objective To understand the hygienic conditions and trends of drinking water in Xiamen in the past three years and to ensure the hygiene and safety of residents drinking water. Methods According to GB 5749-2006 “drinking water health standards” on the 2010-2012 Xiamen city drinking water monitoring results of all types of statistical analysis. Results The passing rate of manufactured water in 2010-2012 was 100.0%, 85.3% and 83.3% respectively. The pass rates in 2011 and 2012 were low. The unqualified indicators were pH value, turbidity, iron and microorganisms. In 2012, The qualified rate of water (94.4%) was higher than that of township water plant (66.7%). The passing rate of three-year terminal water was 83.3%, 86.3% and 88.6% respectively, showing an upward trend year by year. The main unqualified indicators were free residual chlorine, turbidity , Iron and microorganisms. The unqualified rate of free residual chlorine was 20.0% and 19.3% in 2010 and 2011 respectively. The pass rates of secondary water supply in three years were 71.9%, 70.2% and 81.3% respectively. The main unqualified indicators were free residual chlorine, Turbidity, iron and microorganisms, mainly free chlorine residual rate is high; 3 years of well water qualified rate was 0,25.9% and 31.3%, showing an upward trend year by year, mainly microbial indicators of high failure rate. Conclusion There are still hidden dangers of microbial contamination in drinking water in Xiamen City. In the future, health supervision should be strengthened to ensure the hygiene and safety of drinking water.