一种定量微生物风险评估（QMRA）方法已被开发并已被探索 在加拿大，这两种方法都是为了支持 肠道病毒和原生动物，以及在多个地点进行现场特定评估 水处理设施。使用QMRA方法和计算机模型的经验 讨论了这些目的。仅包含摘要。

A quantitative microbial risk assessment (QMRA) approach was developed and has been explored in Canada both as a means for supporting drinking water guideline values (treatment goals) for enteric viruses and protozoa, and for carrying out site-specific assessments at several drinking water treatment facilities. The experience of using a QMRA approach and computer model for these purposes is discussed. Includes abstract only.