HSE highlights Legionella risks during the coronavirus pandemic28 September 2020

In facilities that have been closed or had reduced staffing during the COVID-19 pandemic, water can stagnate due to lack of use, increasing the risks of Legionnaires’ disease, warns the Health and Safety Executive (HSE).

It notes that employers, the self-employed and people in control of premises, such as landlords, have a duty to protect people by identifying and controlling risks associated with legionella.

They should review their risk assessment and manage the Legionella risks when they reinstate a water system or start using it again, or restart some types of air conditioning units that have a source of water that generate aerosol. By contrast, small wall or ceiling-mounted units with closed cooling systems should not present a risk, it adds.

If the water system is still used regularly, maintain the appropriate measures to prevent legionella growth.

Control methods include high temperatures, biocides and other chemicals, mechanical methods and pipework replacement.

HSE has published an overview available via the link below.

William Dalrymple

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