Is it safe to swim in a geyser?

Don't touch any water in or around thermal features. Never swim, soak, or wade in thermal features. More than 20 people have died from intentionally entering or falling into hot springs. Pets are not allowed in thermal areas, and you're better off leaving your pet at home.



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Taking a Dip The naturally high temperatures of the spring water make the water unsafe for bathing, so think twice before you dip your toes in. Fortunately, there are other options at the park that make it possible to submerse yourself in the therapeutic waters at a safe temperature.

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In October 2021, a 20-year-old woman suffered second-degree burns after she rushed into a hot spring at Yellowstone while trying to rescue her dog. The hot spring that she entered, Maiden's Grave Spring, has an average temperature of 200 degrees Fahrenheit, per the NPS.

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We recommend getting out of the water for 5 minutes every 15 minutes or so. This largely depends on the temperature of the pool you're in. You might need to get out more often in a hotter pool and less in a mild pool. Listen to your body.

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The minerals in the hot springs water is no more damaging to bathing suits than chlorinated pools, saltwater or hot tubs. However, there are a few keys to keeping it in pristine condition. After you're done enjoying the soothing and rejuvenating waters, be sure to thoroughly rinse your swimsuit in cool water.

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In some small geysers, the eruption process can take just a few minutes. In larger geysers, it can take days. The most famous geyser in the United States, Yellowstone National Park's Old Faithful, erupts about every 50-100 minutes.

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