For nearly a century, swimming in the Chicago River was unthinkable as the waterway had become a toxic dumping ground for industrial pollution and sewage that created dangerous conditions for any human contact. On Sunday, September 21st, that changed forever when over 300 qualified swimmers dove into the river for the first organized open-water swim since 1926, marking one of the most remarkable environmental comeback stories in American history. The swimmers navigated one- and two-mile courses between the iconic downtown bridges while thousands of spectators lined the Riverwalk, witnessing a milestone that seemed impossible just decades ago.
The historic event raised $150,000 for ALS research while celebrating the river’s dramatic transformation from polluted industrial channel to clean urban waterway that now supports over 70 species of fish. Water quality testing in the weeks leading up to the swim consistently exceeded federal standards for human contact, proving that decades of environmental protection efforts, cleanup initiatives, and the Clean Water Act of 1972 had finally restored the river to swimmable condition. Becca Mann won the two-mile race in just over 40 minutes, while participants described swimming through downtown Chicago as “a different type of architecture tour” that offered a completely new perspective on their beloved city. This triumphant return to the water represents more than just a swim, it’s proof that environmental restoration is possible when communities commit to healing their waterways for future generations.
