phosphorous levels

John Koepke

Oconomowoc sits about 30 miles west of Milwaukee and falls within a lake and stream-rich 8300-acre watershed .  It falls within the massive Rock River basin.

Stretches of the system are subject to an abundance of phosphorus, too much of it, which leads to algal bloom and loss of aquatic life.

Parts of Lake Michigan’s Green Bay have areas of low oxygen, which threaten aquatic life.