EPA is not aware of arsenic causing lung effects from hot showers. The health effects for arsenic from inhalation exposures at levels found in water are not well studied compared to drinking and other oral exposure studies. The cancer effects data from inhalation of arsenic was studied for factory workers in smelters, but these levels of exposure are much higher than what would occur from inhalation of water vapors and air during a shower.
What is the effect of arsenic on the lungs with long hot showers? Has EPA conducted research studying these effects?
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