Preliminary findings of a Wisconsin study reveal that many wells near Green Bay have high levels of strontium, according to a release. The University of Wisconsin – Green Bay is overseeing the analysis.
Researchers collected 115 water samples from municipal and private wells in Brown and Outagamie counties. Lab inspection has shown a full 63 percent of those collected contain strontium levels higher than 4 milligrams per liter, the U.S. EPA’s lifetime Health Advisory Limit. Six water samples were found to contain levels above 25 milligrams per liter.
The researchers analyzed rock samples collected during related studies and found the likely strontium source is celestine or strontianite rock.