Occurrence of Legionellae
Occurrence of legionellae - media-related
- Occurrence in fresh and saline water
- Occurrence in the ground
- Free living and in host organisms (amoebae, ciliates)
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Optimum water temperature is about 25 °C to 50 °C
Occurrence of legionellae - system-related
- Warm water systems in public buildings
- Hospitals, spa facilities, sanatoriums with pool facilities, senior citizens¿ and nursing homes
- Swimming pools (outdoor and indoor pools), sauna facilities, whirlpools
- Hotels (unused or rarely occupied rooms)
- Air conditioning systems
- Sports facilities (gyms, stadiums)
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Fountains
Anywhere where aerosols (spray) are generated and warm water is present, there is a particular risk.