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U.S. Steel Midwest Plant on the shore of Lake Michigan, with the Indiana Dunes Portage Lakefront and Riverwalk Trail in the foreground, in 2019. (Patty Wetli / WTTW News)

The Environmental Protection Agency confirmed the “reddish-orange discharge” that poured into Lake Michigan on Sunday from a steel plant in Portage, Indiana, was caused by high levels of iron, and says there’s no indication of health risks for people who may come into direct contact with the water.

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U.S. Steel Midwest Plant on the shore of Lake Michigan, with the Indiana Dunes Portage Lakefront and Riverwalk Trail in the foreground, in 2019. (Patty Wetli / WTTW News)

U.S. Steel is reporting that a “rusty colored” discharge that poured into Lake Michigan on Sunday from its plant in Portage, Indiana, was due to elevated iron levels.

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Indiana Dunes National Park, with various industrial plants in the background, in 2019. (Patty Wetli / WTTW News)

Officials from the Indiana Department of Environmental Management are investigating a “rusty colored liquid” discharged from the U.S. Steel plant in Portage, spotted Sunday evening in the Burns Waterway.