Analysis on trend of changes in rural drinking water quality in Huai'an City from 2008 to 2022

Abstract

Abstract: Objective To analyze the trend of changes in rural drinking water quality in Huai'an City from 2008 to 2022,and provide reference for further improving the safety level of rural drinking water in Huai'an area. Methods Collect monitoring data of rural drinking water in Huai'an City from 2008 to 2022,analyze the qualified rate and the change trend of water quality. Results From 2008 to 2022,a total of 23 501 rural drinking water samples were monitored in Huai'an City,with an overall qualified rate of 88.9%. The qualified rate of rural drinking water ranged from 84.3% to 100.0% from 2008 to 2022,which showed an overall upward trend（P<0.05）. The main unqualified items included the total coliform bacteria,total colony,heat-resistant coliforms, turbidity,visible substances,manganese,iron,etc.,and the qualified rate of the items showed an upward trend（P<0.05）,the overall content of the items showed a downward trend（P<0.05）. However,the oxygen consumption value had been continuously increasing since 2017（P<0.05）,while indicators such as chloride,sulfate,soluble total solid,and total hardness had shown an upward trend since 2022. Conclusion From 2008 to 2022,the overall qualification rate of rural drinking water in Huai'an City showed an upward trend,and the water quality was significantly improved,which is related to the effective implementation of regional centralized water supply strategies. However,after the overall decrease in some indicators,they have shown an upward trend in recent years,which is worth paying attention to.

Key words: Rural areas, Drinking water, Trend

YANG Juan, CHEN Xiaomin, CHEN Guocai, LUO Shancai, ZHANG Wen. Analysis on trend of changes in rural drinking water quality in Huai'an City from 2008 to 2022. [J]OCCUPATION AND HEALTH, 2025, 41(11): 1515-1519.

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