“十三五”期间自贡市饮用水水质状况研究

Study on the Drinking Water Quality of Zigong During the 13th Five-Year Plan Period

为全面了解自贡市饮用水水质现状和变化情况,本文对“十三五”期间自贡市饮用水水源地水质监测数据进行了综合分析,系统研究了自贡市城市和乡镇集中式生活饮用水水源地水质变化趋势、空间分布、富营养化状况和主要超标因子等。监测结果表明:2016-2020年,自贡市城市集中式生活饮用水水源达标率较高,富营养化程度不深,水质状况稳定。五年间,乡镇集中式生活饮用水水源达标率不断提高,水质改善明显,与城市饮用水的差距逐年减小。自贡市生活饮用水总体水质状况良好,主要超标因子相对集中。建议持续保持城市饮用水的高达标率,重点加强乡镇饮用水水源地的保护和监管,不断提高乡镇饮用水水源达标率,保障全市饮用水稳定达标。

For a comprehensive understanding of Zigong drinking water status and change situation,in this paper,the water quality monitoring data of drinking water sources in Zigong during the 13th Five-Year Plan period were comprehensively analyzed,the water quality variation trend,spatial distribution,eutrophication status and main exceeding factors of city and township concentrated drinking water sources in Zigong were systematically studied.The monitoring results showed that,from 2016 to 2020,the qualification rate of city centralized drinking water sources were very high in Zigong,the degree of eutrophication were not big,the water quality were stable.In the past five years,the qualification rate of township concentrated drinking water sources had been increasing,the water quality were improved significantly,and the gap with city drinking water had been reduced year by year.The overall quality of drinking water in Zigong was good,and the main exceeding factors were relatively concentrated.It was suggested to maintain the high qualification rate of city drinking water,focus on strengthening the protection and supervision of drinking water sources in township,and constantly improve the qualification rate of drinking water sources in township to ensure the stable qualification rate of drinking water in the city.