2023—2024年北京市门头沟区生活饮用水理化指标监测结果分析  

Analysis of the Monitoring Results of Physical and Chemical Indicators of Domestic Drinking Water in Mentougou District,Beijing from 2023 to 2024

作　　者：王松 毕容[1] 褚添 李玮 WANG Song;BI Rong;CHU Tian;LI Wei(Mentougou District Center for Disease Control and Prevention,Beijing 102300,China)

机构地区：[1]北京市门头沟区疾病预防控制中心,北京102300

出　　处：《食品安全导刊》2025年第9期47-50,56,共5页China Food Safety Magazine

摘　　要：目的:分析2023—2024年北京市门头沟区生活饮用水理化指标监测情况,为保障生活用水安全提供科学依据。方法:依照《生活饮用水标准检验方法》(GB/T 5750)系列标准对北京市门头沟区2023—2024年生活饮用水进行监测,按照《生活饮用水卫生标准》(GB 5749—2022)对监测结果进行评价。结果:2023—2024年共计检测903份样品,理化指标总合格率达89.3%,2023年与2024年合格率差异显著(χ^(2)=93.54,P<0.001)。枯水期合格率(97.4%)高于丰水期(83.7%),差异有统计学意义(χ^(2)=19.99,P<0.001)。在理化指标方面,浑浊度指标合格率最低(89.3%),主要归因于洪涝灾害。对比不同水期合格率,理化指标中浑浊度与硫酸盐在枯、丰水期的合格率差异有统计学意义(P<0.05);不同年度对比中,浑浊度、色度、肉眼可见物及耗氧量4项指标合格率差异有统计学意义(P<0.05);不同年度井水的合格率差异有统计学意义(P<0.05)。结论:北京市门头沟区生活饮用水总体质量尚可,相关部门需持续强化水源保护、供水设施维护与水质监测工作,尤其在丰水期及特殊灾害后要加大对分散式供水水源的监测力度,以确保居民饮用水安全。Objective:To analyze the monitoring of physical and chemical indicators of domestic drinking water in Mentougou district,Beijing from 2023 to 2024,and to provide a scientific basis for ensuring the safety of domestic water.Method:According to GB/T 5750,the domestic drinking water in Mentougou district of Beijing from 2023 to 2024 was monitored,and the monitoring results were evaluated according to GB 5749—2022.Result:A total of 903 samples were tested from 2023 to 2024,and the total pass rate of physical and chemical indexes was 89.3%,and the pass rate between 2023 and 2024 was significantly different(χ^(2)=93.54,P<0.001).The pass rate in dry season(97.4%)was higher than that in wet season(83.7%),and the difference was statistically significant(χ^(2)=19.99,P<0.001).In terms of physical and chemical indicators,the pass rate of turbidity index was the lowest(89.3%),which was mainly attributed to flood disasters.There were statistically significant differences in the pass rates of turbidity and sulfate in dry and wet seasons(P<0.05),turbidity,color,visible matter and oxygen consumption in different years(P<0.05),and a statistically significant difference in the pass rates of well water in different years(P<0.05).Conclusion:The overall quality of drinking water in Mentougou district of Beijing is acceptable,and relevant departments need to continue to strengthen the protection of water sources,the maintenance of water supply facilities and the monitoring of water quality,especially in the flood season and after special disasters,so as to ensure the safety of drinking water for residents.

关 键 词：生活饮用水 理化指标 监测结果 浑浊度 

分 类 号：R12[医药卫生—环境卫生学]