Hot Springs BacteriaWhile Legionella pneumophila, a cause of Legionnaires' disease, grows in water at temperatures between 77°F and 113°F (25-45°C). Avoid hot springs if you have deep cuts and wounds, as they can get infected.
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Avoid pools that are hotter than 120 degrees. Hot springs can raise heart rate and blood pressure, and can pose a threat to people with health conditions. Pregnant women should consult a doctor before soaking in hot springs, especially during the first trimester.
While clothing may be optional at your desired hot spring, it's always smart to have one on hand! You never know who could be there when you arrive, and it might feel weird or uncomfortable to be nude if you see a family with small children soaking in the pool you want to use.