A member asked:

Does a hot water heater at 120 degrees make naegleria fowleri nonviable?

4 doctors weighed in across 3 answers
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

By CDC website: Naegleria fowleri grows best at higher temperatures up to 115°F (46°C). Although the amebae may not be able to grow well, Naegleria fowleri can still survive at higher temperatures for short periods of time. The trophozoites and cysts can survive from minutes to hours at 122–149°F (50–65°C), with the cysts being more resistant at these temperatures.

Answered 12/23/2022

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Dr. Daniel Ziegler answered

Specializes in Emergency Medicine

NO. Naegleria Fowleri is an amoeba that thrives in warm freshwater lakes, streams, hot springs and unchlorinated pools. It thrives in temps between 80 and 115 degrees but can survive in higher temperatures. It has been found in every state. It enters the nose and causes a fatal brain infection but won't harm you if swallowed. There are just 3 cases/yr in the US compared to 400 drownings/yr.

Answered 12/24/2022

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Since you seem concerned regarding amebic contamination in your water supply, contact your local water company to have your water tested.

Answered 12/26/2022

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