The St. Clair River is on a list of toxic hot spots in Michigan. They’re called Areas of Concern.
The river is on this list because of a long history of industrial pollution. But people have been working to clean it up.
In order to take the river off the list, there are a number of problems that have to be fixed.
One of these is beach closings. Those can happen when untreated sewage gets into the river during storms. But officials say things are getting much better on that front.