水处理是对抗饮用水中致病微生物的重要屏障。 由于测试采出水是否存在指标不足以验证水质 安全性、定量微生物风险评估现在被用于更好地确定 饮用水安全。本研究分析了12个治疗系统的数据，以 开发通过治疗系统量化病原体减少的方法。提出了四种方法 评价的。应用基于文献中报告的缩减的三角分布代替 点估计减少了不确定性。 监视代理可以对这一点进行改进 三角分布。微生物采样提供了最准确的估计 名义上的减少，但只能在治疗的第一阶段应用。建模 基于工艺条件的工艺最适用于消毒工艺。 仿真结果表明，监测频率对监测结果有很大影响 评估。因此，提出的QMRA方法为验证 遵守基于健康的目标、风险识别、风险优先级和设计 水安全计划中的监控。包括38个参考文献、图表。

Water treatment is an important barrier against pathogenic microorganisms in drinking water. Since testing the produced water for the absence of indicators is insufficient to verify water safety, Quantitative Microbiological Risk Assessment is now applied to better determine drinking water safety. Data from twelve treatment systems was analyzed in this study to develop methods to quantify pathogen reduction by a treatment system. Four approaches were evaluated. Applying triangular distributions based on reported reduction in literature instead of point estimates reduced uncertainty. Monitoring surrogates allowed a refinement of this triangular distribution. Microbiological sampling provided the most accurate estimate of nominal reduction, but could only be applied in the first stages of treatment. Modelling processes based on process conditions was most appropriate for disinfection processes. Simulations showed that the monitoring frequency can have a large impact on the outcome of the assessment. Thus, the presented QMRA methods provided input for verification of compliance to health based targets, risk identification, risk prioritization and designing monitoring in the water safety plan. Includes 38 references, figures.