目的 了解2015—2022年安徽省旌德县生活饮用水水质卫生状况,为加强旌德县生活饮用水安全管理提供科学依据。方法 对2015—2022年旌德县生活饮用水监测点进行水样采集,按照《生活饮用水标准检验方法》(GB/T 5750—2006)与《生活饮用水卫生标准》(GB 5749—2006)对监测点采集的生活饮用水进行检测及评价。结果 2015—2022年旌德县共监测生活饮用水水样499份,合格350份,合格率为70.14%。2015—2022年水样合格率($\chi_{\text { 趋势 }}^{2}$=18.508,P<0.001)、微生物指标合格率($\chi_{\text { 趋势 }}^{2}$=23.148,P<0.001)、感官性状和一般化学指标合格率($\chi_{\text { 趋势 }}^{2}$=18.270,P<0.001)呈上升趋势。农村水样(63.28%)、以溪水为水源的水样(62.00%)、丰水期水样(65.06%)、<100 m³/d供水规模的供水单位水样(64.86%)、不具备消毒工艺供水单位水样(63.56%)合格率较低。水样不合格指标主要为微生物指标中耐热大肠菌群或大肠埃希氏菌、总大肠菌群,合格率分别为49.52%、78.96%。总大肠菌群合格率在农村水水样、以溪水为水源的水样、供水规模<1 000 m³/d的供水单位的水样、不具备消毒工艺的供水单位水样中较低,分别为72.66%、70.86%、75.75%、72.61%。结论 2015—2022年旌德县生活饮用水水质合格率较低,不合格指标主要为微生物指标中的耐热大肠菌群或大肠埃希氏菌和总大肠菌群。

Objective To understand the hygienic status of drinking water quality from 2015 to 2022 in Jingde County of Anhui Province,and to provide scientific basis for strengthening the safety management of drinking water in Jingde County.Methods Water samples were collected from monitoring points of drinking water in Jingde County from 2015 to 2022.The collected drinking water samples were tested and evaluated in accordance with the Standard Examination Methods for Drinking Water (GB/T 5750-2006) and the Standards for Drinking Water Quality(GB 5749-2006).Results From 2015 to 2022,a total of 499 drinking water samples were monitored in Jingde County,with 350 qualified samples,and the qualification rate was 70.14%.The qualification rates of water samples ($\chi_{\text { trend }}^{2}$=18.508,P<0.001),microbial indicators ($\chi_{\text { trend }}^{2}$=23.148,P<0.001),and sensory and general chemical indicators ($\chi_{\text { trend }}^{2}$=18.270,P<0.001) showed upward trend from 2015 to 2022.The qualification rates of rural water samples (63.28%),water samples sourced from streams (62.00%),water samples during the abundant water period (65.06%),water samples from supply units with a scale less than 100 m³/d (64.86%),and water samples from supply units without disinfection processes (63.56%) were relatively low.The main unqualified indicators were microbial indicators,such as thermotolerant coliform bacteria or Escherichia coli and total coliform bacteria,with qualification rates of 49.52% and 78.96%,respectively.The qualification rates of total coliform bacteria were lower in rural water samples (72.66%),water samples sourced from streams (70.86%),water samples from supply units with a scale less than 1 000 m³/d (75.75%),and water samples from supply units without disinfection processes (72.61%).Conclusion The qualification rate of drinking water quality in Jingde County from 2015 to 2022 is relatively low,and the main unqualified indicators are microbial indicators such as thermotolerant coliform bacteria or Escherichia coli and total coliform bacteria,which should be the focus of future drinking water monitoring.