2016—2018年自贡市城市生活饮用水监测结果

Monitoring results of urban drinking water in Zigong City from 2016-2018

目的了解2016—2018年自贡市城市生活饮用水卫生状况,为管理和改善饮用水水质提供依据。方法对2016—2018年自贡市城市生活饮用水进行监测,根据GB/T 5750-2006《生活饮用水标准检验方法》和GB 5749-2006《生活饮用水卫生标准》进行检验和评价,并对监测结果进行描述分析。结果2016—2018年共监测水样394份,合格322份,合格率81.73%。2018年总体合格率最高(92.19%),末梢水合格率最高(85.46%),C区合格率最高(98.94%),一氯胺消毒合格率最高(98.08%)。单项指标不合格率较高的是耗氧量(7.36%)、菌落总数(4.57%)、浑浊度(3.55%)及总大肠菌群(3.30%)。结论2016—2018年自贡市城市生活饮用水卫生状况良好,仍须加强监督管理,保证饮水安全。

Objective To understand the hygienic status of urban drinking water in Zigong City from 2016-2018,provide evidence for the management and improvement of drinking water quality.Methods The urban drinking water in Zigong City was monitored from 2016-2018.The testing and evaluation were conducted following the Drinking Water Test(GB/T 5750-2006)and the Drinking Water Sanitary Standard(GB 5749-2006),and the results were analyzed by descriptive statistical analysis method.Results From 2016-2018,a total of 394 water samples were monitored,of which 322 were qualified,with a qualification rate of 81.73%.The highest qualification rate of annual,water sample type,region and disinfection method were 2018(92.19%),peripheral water(85.46%),area C(98.94%)and monochloramine disinfection(98.08%).The unqualified indexes were mainly concentrated on oxygen consumption(7.36%),total counts of bacteria(4.57%),turbidity(3.55%)and total coliforms(3.3.%).Conclusion The sanitary condition of urban drinking water in Zigong City is satisfactory from 2016-2018,and supervision and management should be strengthened to ensure the safety of drinking water.