ISO 11731:2017规定了隔离军团菌的文化方法和其在水样中数量的估计。 这些方法适用于各种水样，包括饮用水，工业，废物和天然水。这些方法可以用于水相关基质，例如生物膜，沉积物等 不是所有军团菌都是可培养的;因此，本文件描述的方法不能恢复所有种类的军团菌

ISO 11731:2017 specifies culture methods for the isolation of Legionella and estimation of their numbers in water samples. These methods are applicable to all kinds of water samples including potable, industrial, waste and natural waters. These methods can be used for water related matrices, e.g. biofilms, sediments, etc. Not all Legionella species are culturable; therefore, the methods described in this document do not recover all species of Legionella.