Legionnaires’ Disease: Guide for Dutyholders

Legionnaires’ Disease: Guide for DutyholdersDo you have responsibility for the control of a particular building or facility, either as a manager, an employer, property owner or a landlord? If you do then the UK’s Health & Safety Executive will often refer to you as the duty holder, and you may well have a legal duty to identify and manage any risks that are associated with Legionella bacteria and Legionnaires’ disease at that facility.

Legionella bacteria and Legionnaires' disease

Legionella is the name given to a pathogenic group of bacteria that cause legionellosis including Legionnaires' disease and Pontiac fever.

Legionella bacteria – can crop up in man-made water systems that are built to serve a particular purpose, for example domestic hot and cold water systems, air conditioning systems and spa pools. They occur in the natural world too, in rivers and other water sources. However, in these instances the numbers of bacteria are small and do not pose a significant risk. It is the precise nature of man-made water systems that may potentially lead to the Legionella bacteria spreading and multiplying, and therefore posing a health risk to anyone exposed to that water source.

Finding out more about your responsibilities as a dutyholder

The UK’s Health and Safety Executive (HSE) provides ample information for dutyholders who have a responsibility to manage risks associated with Legionella, Legionnaires’ disease and engineered water systems. These water systems can range from large cooling towers to a small hot tub used on display in a shop. Basically, any water system could have the potential to allow for the spread of Legionella bacteria.

Performing a risk assessment for Legionnaires’ disease

You can only identify the risks and manage them appropriately once a Legionella risk assessment has taken place – this should be seen as your starting point. You may be able to do this yourself if you have the proper skills, or if the risks are very small. However, it is often better to hire an experienced Legionella risk assessor with the right skills to do the risk assessment for you.

Regular monitoring inspections and record keeping

In some cases, it will be discovered that the risks are minimal. In this case, nothing else needs to be done, save regular monitoring to ensure the risk level is properly managed and has not increased. It is wise to keep a record of what has been done in every case, in the event it should be required.

Legionella testing

However, in other situations, regular Legionella testing may be required to ensure the amount of bacteria remains below specific levels identified by the HSE. Sometimes testing may not be needed, particularly if other control measures can be identified that would allow levels of bacteria to remain at a safe level.

Dutyholders legal responsibilities

The most important thing to remember is that every dutyholder has a legal responsibility to identify and manage any and all risks associated with Legionella bacteria and Legionnaires’ disease at the properties they are tasked with managing.

If you are the recognised dutyholder then following the advice given by the HSE is a great starting point and will certainly help to ensure that the health and safety of your employees, work colleagues and others around you are protected, and that your legal obligations associated with the control of Legionella bacteria and Legionnaires’ disease and are met.

Expert Legionella risk assessment and risk management support

To find out more about our expert Legionella risk assessment and risk management support services please contact us on 0161 877 0586 (Manchester) or 0203 637 47 48 (London).

London Office
Kemp House
152 City Road
London EC1V 2NX
United Kingdom
Tel: +44 (0) 203 637 47 48
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Manchester Office
Unit B Badex Building
Westbrook Park
Manchester M17 1AY
United Kingdom
Tel: +44 (0) 161 877 0586
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Further reading

For additional information about Legionella and the dutyholders responsibilities … here

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Unit B Badex Building
Westbrook Park
Manchester M17 1AY
United Kingdom

Manchester: +44 (0) 161 877 05 86
London: +44 (0) 203 637 47 48
Email: info@legionellacontrol.com

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