Legionella Risk Assessment

Do I need a Legionella risk assessment?

  • Legionella risk assessments are required by law.

  • They are a statutory requirement under the Health and Safety at Work Act 1974 amongst others.

  • A Legionella risk assessment is a fundamental step in protecting your employees and the public from exposure to contracting Legionnaires' disease.

  • Legionella risk assessments should meet the requirements of the HSE’s ACoP L8.

  • BS 8580:2010 is the latest British Standard relating to Legionella.

  • They should be reviewed every two years or following a system change.


What does a Legionella risk assessment involve?

Our comprehensive and compliant Legionella risk assessments include identification and evaluation of all potential sources of risk associated with Legionella within your building’s water system.

A City and Guilds qualified Legionella risk assessor visits your premises to perform a site survey.

This involves:

  • Water temperatures taken across the site measured against acceptable ranges

  • Identification and detailed inspection of all site assets

  • Trace of all pipe work configurations and water sources

  • Identification, evaluation and prioritisation of all risks

  • Control scheme recommendations against the identified risks

  • Check of system materials to ensure compliance with WRAS 

  • Photography of all site assets and risk areas


Following the site visit, the risk assessment is typed up and issued to you electronically and/or in hardcopy depending on your requirements.

This includes:


  • Overall risk rating - a quantitative way to measure risk and prioritise remedial works

  • Executive summary - a summary of findings and recommendations for initial review

  • Recommendations - a task-by-task summary of all recommendations bespoke to site

  • Site and asset inspection reports - Asset registries, useful for management records

  • Report photography - All findings clearly referenced against photographic record

  • Site schematic - Simple to follow, detailed representations of the entire site