Building and Developing

Where does legionella come from?


Legionella bacteria are found in soil and fresh water sources in the natural environment. It grows readily at temperatures ranging between 20 and 50°C. As the name suggests, it’s also the species that causes Legionnaires’ disease. Symptoms of the disease include breathing difficulties, dry cough, flu-like symptoms and in some cases vomiting, diarrhoea and delirium.

The bacteria generally only cause illness when they begin to flourish in man-made water systems such as cooling towers, hot/cold water systems, fountains and in equipment that produces moist air such as air conditioning units.

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