ISO 11731:2017 PDF Download

ISO 11731:2017 is a standard that provides guidelines for the enumeration and isolation of Legionella, a type of bacteria commonly found in water. The standard outlines culture methods that can be used to estimate the number of Legionella present in various types of water samples, including potable, industrial, waste, and natural waters. It also highlights that the methods can be applied to different water-related matrices such as biofilms and sediments.

However, it is important to note that not all species of Legionella can be cultured using these methods. This means that the standard may not recover all types of Legionella species present in a given sample. Nonetheless, ISO 11731:2017 offers a standardized approach to assess the presence and quantity of Legionella in water, which is valuable for monitoring and managing the potential health risks associated with these bacteria.