Yes, a Legionella Risk Assessment can form part of a general risk assessment, but the water risk assessment has to be sufficient to cover the specific measures associated with control of Legionella, which are set out in detail in the HSE ACoP L8 The Control of Legionella Bacteria in Water Systems. In brief, the assessment should identify where there are:

  • Suitable conditions for Legionella growth: water temperature of 25°C to 45°C.
  • Means of dissemination, such as showers or air-conditioning units.
  • Presence and nature of the people exposed. Old and infirm people are more prone to contracting Legionnaires' disease.

A water risk assessment typically includes the schematic drawings of your systems, the asset register, measures to control the risk and monitoring programmes.

Legionella assessments should be carried out at least every two years or when there is a significant change to the water system, and are needed for all commercial buildings with water systems.

Ensure there is a proper training for anyone tasked with maintaining the control systems; it is good practice to provide employees with toolbox talks to understand the potential hazards.

Most organisations trust legionella assessments to specialists. Whoever is assigned the assessor must be competent and have sufficient experience, expertise and training.

OK, I'm interesed what do i do next?

Our legionella risk assessments have been developed in accordance with the guidelines and recommended practices issued by the UK Health & Safety Executive L8 and the health and Safety Commission (HSC).

The legionella and water risk assessment will have a significant impact on reducing liability should any problems occur.

For more information on the services we provide, please email This email address is being protected from spambots. You need JavaScript enabled to view it. or use our Contact Us form.

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