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Legionella At Work

Health & Safety

Building owners, employers or those responsible for managing risk related to water quality, are required to: 

Identify and assess sources of risk

  • Water Systems and associated equipment e.g. pumps, heat exchangers, showers, etc.
  • Potential for legionella growth and exposure (via water droplet inhalation).
  • Susceptibility to legionnaires disease.
  • Water temperatures affecting growth rate.
  • Supply of nutrients.

Manage the risk

  • Competent person to undertake the risk assessment.
  • A competent person has sufficient authority, competence, necessary skills, knowledge of the system, and experience.
  • Identify responsibilities.
  • Confirm suitability of works undertaken.

Prevent or control the risk

  • Prevent – remove the risk at source.
  • Where the risk cannot be prevented ensure there is a written control scheme to manage the risk.
  • Implement controls.
  • Carry out checks.
  • Ensure suitable maintenance.

Keep records

  • Document significant findings and controls implemented.
  • Ensure records are kept for the appropriate time period.

Other duties

  • Notify your local authority in writing, if you have a cooling tower or evaporative condenser on site, including its location, and when such devices are no longer in use.
  • Report any cases of legionellosis in an employee who has worked on cooling towers or hot and cold water systems that are likely to be contaminated with legionella.

Law At Work can assist with arranging your assessment at discounted rates as one of our valued clients.


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