本文强调了列举饮用水中受伤大肠菌群的重要性。综述了氯和其他消毒剂、热、冷冻、阳光、pH值、铜等过渡金属、拮抗平板计数菌以及标准平板计数菌相互作用等多种来源对指示菌造成的伤害。本文讨论了影响损伤程度和严重程度的因素，包括暴露时间和温度、机体菌株、生理状态、营养素浓度、中和技术、稀释剂和计数方法。作者描述了压力大肠菌群的计数方法，并建议使用mEndo和m进行平行大肠菌群分析- T7琼脂用于评估受伤大肠菌群的发生程度。包括105个参考文献、图表。

This article emphasizes the importance of enumerating injured coliforms in drinking water. Sources of injury to indicator bacteria resulting from a variety of sources including chlorine and other disinfectants, heat, freezing, sunlight, pH, transition metals such as copper, antagonistic plate count organisms, and interactions of standard plate count bacteria are reviewed. Factors that can influence the extent or severity of injury include time and temperature of exposure, strain of organism, physiological state, concentration of nutrients, neutralization technique, diluent, and method of enumeration are discussed. The authors describe methods for enumerating stressed coliforms and recommend performing parallel coliform analyses using mEndo and m-T7 agars to assess the extent of occurrence of injured coliforms. Includes 105 references, figures.