A Legionella risk assessment is an essential process that helps identify and evaluate potential sources of Legionella bacteria in a specific environment. This assessment typically involves examining water systems, such as cooling towers, hot tubs, and plumbing systems, to determine the likelihood of Legionella growth and transmission. 

Legionella bacteria, found in water droplets, can cause health risks like Legionnaires’ disease (severe pneumonia) and Pontiac fever (milder respiratory infection).

 Legionella thrives and grows in water systems or stagnant water. By conducting a thorough risk assessment, organisations can implement effective control measures to minimise the risk of Legionnaires’ disease outbreaks .