本文讨论了水系统中军团菌的存在。具体而言，本文包括:促进水系统中军团菌生长的条件；军团菌不同消毒方法的成本、优点和缺点，包括铜银电离、热根除（过热和冲洗程序）、紫外线（UV）光、瞬时加热系统、过氯化、臭氧和冗余；未经验证的根除方法；消毒后的监测。包括113个参考文献和表格。

This article discusses the presence of Legionella in water systems. Specifically, the article covers: conditions promoting the growth of Legionella in water systems; costs, advantages, and disadvantages of different disinfection methods for Legionella, including copper-silver ionization, thermal eradication (superheat-and-flush procedures), ultraviolet (UV) light, instantaneous heating system, hyperchlorination, ozone, and redundancy; unvalidated eradication methods; and, monitoring after disinfection. Includes 113 references, tables.