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7 Smart Ways to Prevent Legionnaires' Disease

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What is Legionnaires' Disease?

It’s a lung infection caused by Legionella bacteria, often spread through contaminated water droplets (like from showers or cooling systems).

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Regularly clean and disinfect hot tubs, showers, water tanks, and fountains to stop bacteria from growing.

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Keep cold water below 20°C (68°F) and hot water above 50°C (122°F)—Legionella thrives in warm water!

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Have your building’s water system tested for Legionella bacteria, especially in hotels, hospitals, and large facilities.

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If you manage buildings, make sure cooling towers are cleaned and treated regularly to prevent bacterial buildup.

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Elderly, smokers, and those with weak immune systems are at higher risk. Make sure environments they visit are safe and maintained.

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Check your home water heaters, humidifiers, and filters. Even small systems can grow Legionella if not cleaned properly.

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