22/04/2024
Causes and Common Sources of Infection
Legionella bacteria are found naturally in freshwater environments, like lakes, streams and tanks. The bacteria can become a health concern when they grow and spread in human-made building water systems like
1. Showerheads and sink faucets.
2. Cooling towers (structures that contain water and a fan as part of centralized air cooling systems for buildings or industrial processes).
3. Hot tubs.
4. Decorative fountains and water features.
5. Hot water tanks and heaters.
6. Large, complex plumbing systems.
7. Home and car air-conditioning units do not use water to cool the air, so they are not a risk for Legionella growth.
However, Legionella can grow in the windshield wiper fluid tank of a vehicle (such as a car, truck, van, school bus, or taxi), particularly if the tank is filled with water and not genuine windshield cleaner fluid.