Nicosia, Cyprus. Businesses, hotels and healthcare facilities have been urged to strengthen precautions against Legionella this summer, as higher temperatures increase the risk of the bacteria developing in water systems, the labour inspection department said on Wednesday.
Higher summer risk
The department said the combination of heat and increased use of cooling systems can create conditions that allow the bacteria to grow if equipment is not properly maintained.
Legionella develops in artificial water systems where water remains stagnant, temperatures are unsuitable and maintenance is poor.
How infection occurs
People become infected by inhaling tiny contaminated water droplets, the department said. It added that the disease is not spread from person to person or by drinking water.
Facilities requiring particular care
The department said particular care should be taken in hospitals, clinics, rehabilitation centres, elderly care homes, hotels and other tourist accommodation.
It added that large residential buildings, water storage tanks, spas, jacuzzis, cooling towers, central air conditioning systems and decorative fountains also require close monitoring.
The department said domestic split unit air conditioners are not usually a source of Legionella because they do not use stored water.
Required prevention measures
According to the department, employers and building managers are required to have a prevention and maintenance plan in place.
This includes appointing a person responsible for Legionella risk management and carrying out regular written risk assessments.
They should also ensure hot water remains above 50C and cold water below 25C where possible.