2012年-2015年某市二次供水水质监测结果分析

Quality of Secondary Water in a City in 2012-2015

摘要:
目的了解某市二次供水水质卫生状况，为卫生监督管理提供科学依据。
方法依据《生活饮用水标准检验方法》（GB/T 5750-2006），对某市2012年-2015年二次供水水样进行采样、检测与评价。
结果某市4年来共检测二次供水水样1566份，合格1008份，合格率为64.4%。各年的水质合格率分别为55.9%、62.7%、75.5%和61.5%。检测指标中以游离余氯合格率最低，为69.0%。
结论某市二次供水的水质合格率偏低，应加强监督管理，提高水质卫生，保障饮用水安全。

Abstract:
Objective To learn the hygienic status of secondary watersupplies of a city and provide scientific basis for health supervision and management.
Methods Secondary watersupply samples were collected,detected and evaluated according to the standard examination methods for drinking water(GB/T 5750-2006).
Results A total of 1566 water samples were monitored in 2012-2015,in which 1 008 samples were qualified, with an overall qualified rates of 64.4%. The qualified rate in 2012, 2013, 2014 and 2015 were 55.9%, 62.7%, 75.5% and 61.5%, respectively. The qualified rate of residual chlorine was the lowest (69.0%).
Conclusion The qualified rates of secondary watersupplies of the city were low in 2012-2015. It is important to enhance the inspection and administration of secondary watersupplies, so as to improve the quality and guarantee the safety of drinking water.