The risk of contracting Naegleria fowleri (commonly known as the “brain-eating amoeba”) from shower water is extremely low. This amoeba is typically found in warm, untreated freshwater (like lakes, rivers, and hot springs) and not in treated tap water. Shower water is usually treated and chlorinated, which greatly reduces the likelihood of amoeba contamination.
Next Steps
Watch for any unusual symptoms like severe headache, fever, nausea, or neck stiffness over the next 1–2 weeks. If these occur, seek medical attention immediately.