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  • ISO 11731:2017

    Current The latest, up-to-date edition.

    Water quality — Enumeration of Legionella

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English, French

    Published date:  12-05-2017

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes ISO/DIS 11731 and ISO 11731-2. (05/2017)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    17/30362689 DC : 0 BS EN 16941-2 - ON-SITE NON-POTABLE WATER SYSTEMS - PART 2: SYSTEMS FOR THE USE OF TREATED GREYWATER
    BS ISO 11731-2 : 2004 WATER QUALITY - DETECTION AND ENUMERATION OF LEGIONELLA - PART 2: DIRECT MEMBRANE FILTRATION METHOD FOR WATERS WITH LOW BACTERIAL COUNTS
    I.S. EN ISO 11133:2014 MICROBIOLOGY OF FOOD, ANIMAL FEED AND WATER - PREPARATION, PRODUCTION, STORAGE AND PERFORMANCE TESTING OF CULTURE MEDIA (ISO/DIS 11133:2012)
    ISO 11133:2014 Microbiology of food, animal feed and water — Preparation, production, storage and performance testing of culture media
    UNI EN ISO 11731-2 : 2008 WATER QUALITY - DETECTION AND ENUMERATION OF LEGIONELLA - PART 2: DIRECT MEMBRANE FILTRATION METHOD FOR WATERS WITH LOW BACTERIAL COUNTS
    EN ISO 11731-2:2008 Water quality - Detection and enumeration of Legionella - Part 2: Direct membrane filtration method for waters with low bacterial counts (ISO 11731-2:2004)
    BS EN ISO 11731-2:2008 Water quality. Detection and enumeration of Legionella Direct membrane filtration method for waters with low bacterial counts
    DIN EN ISO 11133:2015-01 MICROBIOLOGY OF FOOD, ANIMAL FEED AND WATER - PREPARATION, PRODUCTION, STORAGE AND PERFORMANCE TESTING OF CULTURE MEDIA (ISO 11133:2014, CORRECTED VERSION 2014-11-01)
    VDI 4250 Blatt 2:2015-11 Bioaerosols and biological agents - Environmental health assessment of bioaerosols in ambient air - Risk assessment for aerosols containing Legionella
    VDI 2047 Blatt 2:2015-01 Open recooler systems - Securing hygienically sound operation of evaporative cooling systems (VDI Cooling Tower Code of Practice)
    BS 6068-4.18(2004) : 2004 WATER QUALITY - DETECTION AND ENUMERATION OF LEGIONELLA - PART 2: DIRECT MEMBRANE FILTRATION METHOD FOR WATERS WITH LOW BACTERIAL COUNTS
    CSA Z317.1 : 2016 SPECIAL REQUIREMENTS FOR PLUMBING INSTALLATIONS IN HEALTH CARE FACILITIES
    DIN 19643-1:2012-11 Treatment of water of swimming pools and baths - Part 1: General requirements
    BS 8580:2010 Water quality. Risk assessments for Legionella control. Code of practice
    DIN EN ISO 11133 E : 2015 MICROBIOLOGY OF FOOD, ANIMAL FEED AND WATER - PREPARATION, PRODUCTION, STORAGE AND PERFORMANCE TESTING OF CULTURE MEDIA (ISO 11133:2014, CORRECTED VERSION 2014-11-01)
    BS EN ISO 11133 : 2014 MICROBIOLOGY OF FOOD, ANIMAL FEED AND WATER - PREPARATION, PRODUCTION, STORAGE AND PERFORMANCE TESTING OF CULTURE MEDIA
    EN ISO 11133:2014/A1:2018 MICROBIOLOGY OF FOOD, ANIMAL FEED AND WATER - PREPARATION, PRODUCTION, STORAGE AND PERFORMANCE TESTING OF CULTURE MEDIA (ISO 11133:2014/AMD 1:2018)
    I.S. EN ISO 11731-2:2008 WATER QUALITY - DETECTION AND ENUMERATION OF LEGIONELLA - PART 2: DIRECT MEMBRANE FILTRATION METHOD FOR WATERS WITH LOW BACTERIAL COUNTS
    UNE-EN ISO 11133:2014 Microbiology of food, animal feed and water - Preparation, production, storage and performance testing of culture media (ISO 11133:2014)
    BS 7592:2008 Sampling for Legionella bacteria in water systems. Code of practice
    DIN EN ISO 11731-2:2008-06 WATER QUALITY - DETECTION AND ENUMERATION OF LEGIONELLA - PART 2: DIRECT MEMBRANE FILTRATION METHOD FOR WATERS WITH LOW BACTERIAL COUNTS

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
    ISO 7704:1985 Water quality — Evaluation of membrane filters used for microbiological analyses
    ISO 19458:2006 Water quality Sampling for microbiological analysis
    ISO 8199:2005 Water quality General guidance on the enumeration of micro-organisms by culture
    ISO 13843:2017 Water quality — Requirements for establishing performance characteristics of quantitative microbiological methods
    ISO 11133:2014 Microbiology of food, animal feed and water — Preparation, production, storage and performance testing of culture media
    ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
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