Which of the following should Legionella control measures be implemented in?

Implementing Legionella control measures in all building systems potentially harboring the bacteria is crucial for maintaining public health. Legionella can thrive in various water systems where conditions such as stagnant water, warm temperatures, and biofilm accumulation exist. This includes not just drinking water systems but also other sources like cooling towers, decorative fountains, and hot water systems.

Fire protection systems, while important, are usually not a primary focus for Legionella management compared to systems where water is regularly stagnated or can create aerosolized water droplets. Drinking water systems are critical, but focusing solely on them neglects other potential sources of exposure in a building. Waste management systems generally do not directly relate to Legionella proliferation and therefore do not require the same level of control measures as systems where water stagnation and aerosol creation can occur. Hence, the comprehensive approach encompassing all potentially affected systems is essential for effective Legionella risk management.