Illinois

The Chicago River, once devastated by pollution, has seen a remarkable turnaround, with cleaner water, expanding wildlife, and renewed public confidence. Conservation groups now report diverse fish species, turtles, and birds thriving along the river, while the city prepares for its first open-water swim in nearly a century. Years of effort—ranging from sewage treatment upgrades to floating wetlands and volunteer cleanups—have driven the transformation. Challenges like stormwater overflows remain, but the river’s revival demonstrates what persistent investment, advocacy, and collaboration can achieve.