这篇文章报道了在俄亥俄州哥伦布市新建的供水和管道系统中军团菌的流行情况。研究结果表明，与运行前电厂冷水系统相关的管道装置受到军团菌污染。具有代表性的阳性菌株被确定为嗜肺L.菌。在进入的主管道水中未检测到军团菌。数据表明，军团菌能够在冷水系统中繁殖，其密度至少达到热水系统中的密度。由于有机物与氯接触不良，重复冲洗和高氯化不足以作为去污程序。 通过停滞或阀门组件设计的物理保护，使阀门和相关内部零件能够抵抗氯消毒，结果表明，这些阀门和相关内部零件被军团菌定植。包括18个参考文献、表格、图表。

This article reports on the distribution and prevalence of Legionella in the water and plumbing systems at various sites in a newly constructed water treatment facility in Columbus, Ohio. Results of studies indicate that plumbing fixtures associated with the coldwater system in the preoperational plant were contaminated with Legionella. Representative positive isolates were identified as L. pneumophilia. Legionella spp. were not detected in the incoming mainline water. Data indicate that Legionella is able to proliferate in cold-water systems, reaching densities at least as great as those found in hot-water systems. Repeated flushing and hyperchlorination were inadequate as decontamination procedures because of poor contact of the organisms with chlorine. Valves and associated inner parts, rendered resistant to chlorine disinfection through stagnation or through physical protection from the design of the valve assembly, were shown to be colonized by Legionella. Includes 18 references, tables, figures.