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ISO 11731:2017

Water quality — Enumeration of Legionella ISO 11731:2017

Publication date:   May 12, 2017

General information

90.93 Standard confirmed   Sep 19, 2022

ISO

ISO/TC 147/SC 4 Microbiological methods

International Standard

07.100.20   Microbiology of water

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11731:1998

WITHDRAWN
ISO 11731-2:2004

NOW

PUBLISHED
ISO 11731:2017
90.93 Standard confirmed
Sep 19, 2022