Legionella pneumophila will multiply in water within what temperature range?

Legionella pneumophila, the bacterium responsible for Legionnaires' disease, thrives in water temperatures between 20 degrees Celsius and 50 degrees Celsius. Within this range, especially around 35 to 45 degrees Celsius, Legionella can replicate rapidly, making it a critical temperature zone for the risk of legionellosis, particularly in water systems that are not effectively managed.

Understanding this temperature range is vital for those involved in the management of plumbing systems, as it highlights the need for temperature control in hot water systems and cooling towers. Keeping water temperatures outside of this range can significantly reduce the risk of proliferation, which is why any effective Legionella management plan must prioritize maintaining water temperatures that are either below 20 degrees Celsius or above 50 degrees Celsius.