南加州大都会水区最近完成了 一个80万英亩英尺（1？109立方米）的饮用水蓄水池。娱乐活动，包括 游泳和其他与水直接接触（BC）的运动一直是最重要的 当地社区成员相当感兴趣的主题。因此，基于 进行风险评估研究，以评估潜在的公共健康风险 如果出现以下情况，对下游饮用水用户造成的后果 不列颠哥伦比亚省允许进行娱乐活动。研究结果表明，每年的水传播风险 尽管进行了常规治疗，疾病仍会比背景增加三倍。 此外，高负荷病原体事件的发生与BC有关 据观察，这会显著增加下游地区每天发生水传播疾病的风险 消费者。这项研究还考虑了额外治疗的成本 必须解决增加的风险。本研究中使用的建模方法提供了 政策制定者和利益相关者审查与商业银行相关问题的指南 娱乐和饮用水库。 包括57个参考文献、表格、图表。

The Metropolitan Water District of Southern California recently completed construction of an 800,000 acre-ft (1 ¿ 109 m3) drinking water reservoir. Recreational activities, including swimming and other sports involving direct body contact (BC) with the water, have been the subject of considerable interest by local community members. Consequently, a modeling-based risk assessment study was conducted to assess the potential public health consequences to downstream potable water users consuming water from this reservoir if BC recreation was permitted. Results of the study indicated that the annual risk of waterborne illness would increase three times above background, despite conventional treatment. Moreover, the occurrence of high-loading pathogen events associated with BC recreation was observed to significantly increase the daily risk of waterborne illness to downstream consumers. The study also considered the cost of additional treatment that would be necessary to address the increased risk. The modeling approach used in this study provides guidance for policymakers and stakeholders who are examining issues associated with BC recreation and drinking water reservoirs. Includes 57 references, tables, figures.