目的 了解宁德市城市生活饮用水水质基本情况,为提高城市生活饮用水水质提供参考依据。方法 收集宁德市2020—2023 年城市生活饮用水监测结果,计算合格率,采用SPSS 17.0进行统计分析。结果 宁德市2020—2023年城市生活饮用水合格率为93.07%(1 988/2 136),其中2020—2023年合格率分别为90.26%(482/534)、90.26%(482/534)、95.96%(511/534)、96.07%(513/534),呈逐年上升趋势(${X}_{趋势}^{2}$=21.601,P<0.001);枯水期和丰水期合格率分别为94.67%(1 011/1 068)、91.01%(972/1 068),差异有统计学意义(χ²=10.708,P=0.001)。市政供水的出厂水、末梢水和二次供水合格率分别为99.04%(103/104)、97.24%(1 058/1 088)、91.59%(806/880),差异有统计学意义(χ²=36.140,P<0.001)。市政供水、自建设施供水(末梢水)合格率分别为94.93%(1 967/2 072)、32.81%(21/64),差异有统计学意义(χ²=361.926,P<0.001)。不合格指标主要为消毒剂指标、浑浊度、总大肠菌群、耐热大肠菌群、大肠埃希菌。结论 宁德市城市生活饮用水合格率较高,但市政供水中的二次供水和自建设施供水合格率较低,相关部门需要加强监管,提高城市生活饮用水水质,保障居民生活饮用水安全。

Objective To understand the basic situation of urban drinking water quality in Ningde,and to provide reference for improving the quality of urban drinking water. Methods The monitoring results of urban drinking water in Ningde from 2020 to 2023 were collected,the qualification rate was calculated.SPSS 17.0 was used to conduct statistical analysis. Results The qualified rate of urban drinking water in Ningde from 2020 to 2023 was 93.07% (1 988/2 136),with qualified rates of 90.26% (482/534),90.26% (482/534),95.96% (511/534) and 96.07% (513/534),respectively,showed an increasing trend year by year (${X}_{trend}^{2}$=21.601,P<0.001).The pass rates during the dry season and wet season were 94.67% (1 011/1 068) and 91.01% (972/1 068),respectively,with a statistically significant difference (χ²=10.708,P=0.001).The qualified rates of factory water,terminal water and secondary water supply for municipal water supply were 99.04% (103/104),97.24% (1 058/1 088) and 91.59% (806/880),respectively,with statistically significant difference (χ²=36.140,P<0.001).The qualified rates of municipal water supply and self-built facility water supply (terminal water) were 94.93% (1 967/2 072) and 32.81% (21/64),respectively,with statistically significant difference (χ²=361.926,P<0.001).The main unqualified indicators were disinfectant indicators,turbidity,total coliform bacteria,heat-resistant coliform bacteria,and Escherichia coli. Conclusion The qualified rate of urban drinking water in Ningde is relatively high,but the qualified rate of secondary water supply in municipal water supply and self-built facility water supply is low.Relevant departments need to strengthen supervision,improve the quality of urban drinking water,and ensure the safety of residents' drinking water.