目的:对某市生活饮用水微生物指标进行监测分析及风险评估。方法:于2016年1月至2017年1月某市9个检测点随机抽取生活饮用水样本共676例作为研究对象。采用标准方法对大肠埃希菌、耐热大肠菌群、总大肠菌群、菌落总数4个微生物指标进行检测,分析不合格率最高检测点,并对不合格样本进行风险评估。结果:该市生活饮用水总合格率为44.97%(304/676),其中菌落总数、总大肠菌群是导致不合格的主要原因,风险评估显示372例不合格标本风险分析显示低危型294例,占79.03%,中危型59例,占15.86%,高危型19例,占5.11%。结论:该市生活饮用水存在低危诱发肠道传染疾病的风险,相关部门需要重视并予以改进措施。 Objective: To monitor the microbial indicators of drinking water in a certain city and assess the risk. Methods: From January 2016 to January 2017, a total of 676 drinking water samples were randomly selected from 9 testing sites in a certain city of the city as the research object. The standard method was used to detect four microorganisms such as Escherichia coli, heat-resistant coliform, total coliforms and colony. The highest detection rate of unqualified rate was analyzed, and the risk assessment of unqualified samples was carried out. Results: The total qualified rate of drinking water in the city was 44.97% (304/676). The total number of colonies and the total coliforms were the main reasons leading to unqualified. The risk assessment showed that the risk analysis of 372 unqualified samples showed that low-risk type 294 Cases, accounting for 79.03%, 59 cases of medium-risk, accounting for 15.86%, 19 cases of high-risk, accounting for 5.11%. Conclusion: There is a risk of low-risk intestinal infection in the drinking water in the city. Relevant departments need to pay attention to and improve measures.