Recent cases of Legionnaires’ disease in the Midlands are a powerful reminder that employers, the self-employed and people in control of premises (such as landlords) have a duty to identify and control risks associated with legionella.

If your building has been closed or had reduced occupancy during the coronavirus (COVID-19) pandemic, water system stagnation can occur due to lack of use, increasing the risks of Legionnaires’ disease.
You should review your risk assessment and manage the legionella risks when you:
reinstate a water system or start using it again
restart some types of air conditioning units
If the water system is still used regularly, maintain the appropriate measures to prevent legionella growth.
For detailed guidance on managing the risks of Legionnaires’ disease during the pandemic click on the attached link:
https://www.hse.gov.uk/coronavirus/legionella-risks-during-coronavirus-outbreak.htm