According to the MN Department of Health, an alarming 10% of wells in Minnesota have arsenic levels greater than EPA allowable limits, but one study by the National Institute of Health reveals that no level of arsenic may be safe.
Arsenic concentrations divided by county. Dark areas represent a high percent of wells with high concentrations of arsenic.
Mice exposed to low levels of arsenic in drinking water, similar to what some individuals might consume, developed lung cancer, according to researchers at the National Institutes of Health (NIH).
“Although this is only one study, it adds to a growing body of evidence showing adverse health effects from very low exposures to arsenic, raising the possibility that no level of arsenic appears to be safe,”
– Linda Birnbaum, Ph.D, director of the National Institute of Environmental Health Sciences (NIEHS) and NTP.