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Legionella.io

Sources & bibliography

Every figure and claim on this site is traceable to one of these authoritative sources. We cite the official publisher, not secondary blogs. Links go to the source; always check you are reading the current edition.

Bibliography last reviewed 27 June 2026

Find & verify a figure in the source

For the main documents, here is the section and page where each topic sits, so you can open the official source and check it yourself. Page numbers are from the editions named; always confirm against the current version.

HSG274 Part 2 (2024): HSG274 Part 2: The control of legionella bacteria in hot and cold water systems

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Free PDF (Part 2) from HSE (hse.gov.uk/pubns/books/hsg274.htm).

  • Types and application of hot and cold water systemsp.53
  • Water system design and commissioningp.63
  • Operation and inspection of hot and cold water systemsp.70
  • Water treatment and control programmes for hot and cold water systemsp.79
  • Microbiological monitoringp.85
  • Cleaning and disinfectionp.87
  • Shared premises and residential accommodation: landlordsp.90
  • Special considerations for healthcare and care homesp.93
  • Appendix 1: Legionella risk assessmentp.104
  • Appendix 2: Legionella written control schemep.106

HSG274 Part 1 (2024): HSG274 Part 1: The control of legionella bacteria in evaporative cooling systems

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Free PDF (Part 1) from HSE (hse.gov.uk/pubns/books/hsg274.htm).

  • Evaporative cooling systems: types, design and operationp.9
  • Requirements of a cooling water treatment programmep.17
  • Inspection, cleaning and disinfection proceduresp.27
  • Monitoring water quality and understanding water treatment analytical reportsp.42

HSG274 Part 3 (2024): HSG274 Part 3: The control of legionella bacteria in other risk systems

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Free PDF (Part 3) from HSE (hse.gov.uk/pubns/books/hsg274.htm).

  • What are other risk systems?p.101
  • Risk identification and controlp.102

ACoP L8 (2013): Legionnaires’ disease: The control of legionella bacteria in water systems (Approved Code of Practice and guidance, L8)

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Free PDF from HSE (hse.gov.uk/pubns/books/l8.htm).

  • Identification and assessment of the riskp.11
  • Carrying out a risk assessmentp.12
  • Managing the risk: management responsibilities, training and competencep.14
  • Implementation of the control schemep.15
  • Preventing or controlling the risk from exposure to legionella bacteriap.16
  • Review of control measures: monitoring and routine inspectionp.18
  • Record keepingp.19

HSG282 (2017): HSG282: Control of legionella and other infectious agents in spa-pool systems

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Free PDF from HSE (hse.gov.uk/pubns/books/hsg282.htm).

  • Section 1: Legislative requirementsp.6
  • Section 2: Types and settingsp.20
  • Section 3: Design and commissioningp.24
  • Section 4: Operation and maintenancep.32
  • Section 5: Testing and monitoring water qualityp.44

HTM 04-01: Safe water in healthcare premises (HTM 04-01)

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Free PDFs (Parts A, B and C) from NHS England.

  • Part A: Design, installation and commissioning
  • Part B: Operational management
  • Part C: Pseudomonas aeruginosa

WHO (2011) (2011): Water safety in buildings

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Free PDF from WHO IRIS (iris.who.int/handle/10665/76145). Licensed CC BY-NC-SA.

  • 1. Introductionp.1
  • 2. What are the issues?p.5

NHS: Legionnaires’ disease

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Public NHS page.

  • How you get Legionnaires’ diseaseopen
  • Symptoms of Legionnaires’ diseaseopen
  • Treatment for Legionnaires’ diseaseopen

CDC: About Legionnaires’ disease

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Public CDC page.

BS 8580-1 (2019): BS 8580-1:2019 Water quality. Risk assessments for Legionella control. Code of practice

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Paid standard from BSI (BS 8580-1:2019). Cite by clause; page numbers vary by printing.

  • Clause 5.1 Competence of the risk assessor
  • Clause 5.2 Agreeing the terms of reference
  • Clause 5.3 Independence
  • Clause 6 Desktop appraisal of documentation
  • Clause 7 Site visit/survey
  • Clause 8 Evaluation of the risk (8.2 risk rating systems)
  • Clause 9 Risk assessment reporting (9.2 identified risks)
  • Clause 10 Risk review and reassessment

BS 8580-2 (2022): BS 8580-2:2022 Water quality. Risk assessments for Pseudomonas aeruginosa and other waterborne pathogens. Code of practice

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Paid standard from BSI (BS 8580-2:2022). Clause + page from the 2022 edition.

  • Clause 5 Hazards and hazardous events for all premisesp.11
  • Clause 6 Preparations for risk assessment (6.1 competence, 6.2 independence)p.11
  • Clause 8 Site survey (8.3 risk assessment and rating systems)p.17
  • Clause 10 Risk assessment reporting for all premisesp.25

BS 7592 (2022): BS 7592:2022 Sampling for Legionella bacteria in water systems. Code of practice

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Paid standard from BSI (BS 7592:2022). Clause + page from the published 2022 edition.

  • Clause 4 Preparation for sampling (4.2 task risk assessment, 4.5 reactive sampling)p.7
  • Clause 5 Survey and samplingp.9
  • Clause 6.2 Biocide neutralizing agentsp.12
  • Clause 7 Sampling proceduresp.14
  • Clause 7.4 Pre-flush and post-flush samplesp.16
  • Clause 7.5 Biofilm samplesp.20
  • Clause 8 Sample transport and storagep.26
  • Clauses 9–15 Sampling for outbreak and other investigationsp.29

BS 8680 (2020): BS 8680:2020 Water quality. Water safety plans. Code of practice

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Paid standard from BSI (BS 8680:2020). Clause + page from the 2020 edition.

  • Clause 4 The water safety plan (WSP)p.7
  • Clause 4.2 Governancep.10
  • Clause 4.3 System assessmentp.16
  • Clause 4.4 Risk assessmentp.18
  • Clause 4.6 Controlling risks (scheme of control)p.29
  • Clause 4.9 Monitoringp.38
  • Clause 4.10 Supporting programmesp.41
  • Clause 4.11 Documentationp.43

HSE, law & guidance

NHS & healthcare

UK Health Security Agency

BSI standards

International

Trade body

For what each document is and who it binds, see standards & guidance; for the numbers, the control-parameters reference.