Legionella risks because of water stagnation during the coronavirus outbreak 
Building closure or reduced occupancy can increase the risks of Legionnaires’ disease. 
 
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 was closed or has reduced occupancy during the coronavirus (COVID-19) outbreak, water system stagnation can occur due to lack of use, increasing the risks of Legionnaires’ disease.  
 
This may particularly affect: 
 
• Hot and cold water systems 
• Cooling towers and evaporative condensers 
• Commercial spa pools and hot tubs 
 
For detailed guidance on Legionella and safer working during the coronavirus outbreak visit the HSE website. 
 
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