The key to preventing legionellosis is maintenance of the water systems in which Legionella grow, including drinking water systems, hot tubs, decorative fountains, and cooling towers (air-conditioning units for large buildings). There are no vaccines that can prevent legionellosis. People at increased risk of infection may choose to avoid high-risk exposures, such as being in or near a hot tub.
Legionella and Hot Tubs
Because high water temperatures make it hard to maintain the disinfectant levels needed to kill germs like Legionella, making sure that hot tubs have the right disinfectant and pH levels are maintained is essential. Learn how you can test the water before you use a hot tub and questions you should ask your hot tub operator to determine whether or not a hot tub has been properly maintained:
- Page last reviewed: October 28, 2015
- Page last updated: October 28, 2015
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