Double Whammy of Pollution for Mississippi River in Minnesota
A U.S. Fish and Wildlife Service employee samples river water for endocrine disrupting pollutants.
Study results publicized this week suggest Twin Cities water resources and the Mississippi River downstream from the Cities are suffering from pollution by road salt and endocrine disrupting chemicals.
The results are from U.S. Geological Survey analysis of watersheds around the U.S. The road salt results indicate chloride levels that may imperil aquatic life in creeks and rivers in the Twin Cities. A study by the University of Minnesota released last winter found that about 70% of the salt applied to roads in the area remained in the Mississippi River and tributaries. Nearly 350,000 tons of road salt are applied for de-icing in the Twin Cities metropolitan area annually.
The U.S.G.S. also reported that 73% of male smallmouth bass sampled in the Mississippi River near Lake City, Minnesota have characteristics of both genders, which researchers believe may be the result of exposure to endocrine-disrupting compounds in wastewater.




