This e-learning course introduces the fundamentals of Legionella awareness, including how the bacteria develops, spreads, and creates risks within water systems such as cooling towers, tanks, and HVAC systems. Participants will learn about Legionnaires’ disease, vulnerable groups, environmental conditions that support bacterial growth, and practical prevention methods. The training also covers temperature control, system maintenance, monitoring requirements, and legal responsibilities associated with Legionella management. The course is suitable for personnel involved in facility management, maintenance, or workplace health and safety activities.