在这项研究之前，水务公司需要确定 大肠杆菌O157:H7在其体内的存在 原水或饮用水需要等待三到五分钟 等待结果的日子。这项调查是为了 定义可以在一次工作中实现这一点的方法 一天，这是必要的，让公用事业员工作出反应 及时将感染风险降至最低 用水者。 在此基础上，提出了两种方法 已识别出能够快速检测极低水平E。 原水或饮用水中的大肠杆菌O157:H7。本文 描述这些程序，这些程序可以与现有程序相吻合 总大肠菌群规则程序或作为独立程序使用 方法。程序快速（耗时<8小时）且用户友好 足够让缺乏技术技能的人 准确地使用这些测试来获得有意义的结果。包括34个参考文献、表格、图表。

Prior to this research, water utilities needing to determine the presence of Escherichia coli O157:H7 in their raw water or drinking water needed to wait three to five days for the results. This investigation was undertaken to define methods that could achieve this in one working day, which is necessary to allow utility staff to respond in a timely manner and reduce the risk of infection to water consumers. On the basis of this research, two methods have been identified that allow quick detection of very low levels of E. coli O157:H7 in either raw or drinking water. This article describes these procedures, which can dovetail into existing Total Coliform Rule procedures or serve as stand-alone methods. The procedures are quick (taking < 8 h) and user-friendly enough that individuals with little technical skill can accurately use these tests to obtain meaningful results. Includes 34 references, tables, figures.