2018—2022年佳木斯市城乡饮用水水质变化趋势分析

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Analysis of the Changing Trends in the Quality of Urban and Rural Drinking Water in Jiamusi City from 2018 to 2022

JIANG Yi1，LU Zichun1*，WANG Yanxu1，LIU Cuiyu'， HU Zhongying1，LIU Bingbing （1.Jiamusi Center for Disease Control and Prevention， Jiamusi 154oo7， China; 2.School of Public Health， Jiamusi University， Jiamusi 1540o7， China）

Abstract： Objective： To analyze the trend of changes in drinking water quality in urban and rural areas of Jiamusi city from 2018 to 2022，evaluate its hygiene status and influencing factors，and provide scientific basis for optimizing water supply management. Method： Based on data from 1 609 monitoring points in 10 counties （cities）and districts ofJiamusi city from 2018 to 2022，analyze the qualified rateofurban and rural drinking water， the qualified rate of main monitoring indicators，and their changing trends.Result：From 2018 to 2022，a total of 3 218 water samples were monitored in Jiamusi city，including 2 923qualified water samples，with an average total qualified rate of 90.83% .the qualified rate of drinking water in rural areas （95.42%） is significantly higher than that in urban areas （78.21% ） （χ2=224.042 ， P<0.001 ）; there was no significant difference in the pass rate between the wet season （91.17%） and the dry season （90.50%） ） （χ2=0.437 0 P=0.509 ）; the qualified rate of factory water （93.43% ） is the highest among all stages， and the difference between groups is statistically significant （χ2=16.866，P<0.001） Among the mainunqualified indicators，thequalifiedrates ofiron，manganese，turbidity，visible substances，ammonia nitrogen， and free residual chlorine were significantly improved （P<0.001 ）.Conclusion： The drinking water qualityin Jiamusi cityhas significantly improved，but attntion stillneeds to bepaid tourban-rural differences， terminal water in the pipeline network，and water quality stability during the dry season.Suggest strengthening the maintenance of rural water supply networks，optimizing disinfection strategies，and exploring intellgent monitoring technologies to further improve management levels.

Keywords： drinking water quality; health surveillance; analysis of results; trends of change

饮用水卫生状况是保障公众身体健康、维系社会稳定的基础性要素，其质量优劣直接关系到介水传染病的防控效果以及慢性健康风险的规避能力。（剩余3985字）