The Raccoon River near Walnut Woods State Park in West Des Moines on Oct. 2, 2025. (Photo by Cami Koons/Iowa Capital Dispatch)
Environmental groups penned a letter to the U.S. Environmental Protection Agency urging the federal agency to maintain its previously rescinded ruling that seven segments of Iowa rivers were impaired due to nitrate concentrations.
The environmental groups said EPA’s decision to delist these segments was “inconsistent” with the law, failed to hold polluters accountable and would lead to increased regulatory costs for water treatment in Iowa…