The increased frequency of combined sewer overflows poses significant risks to both human health and the environment. Pollutants such as oil, road salt, pesticides, and bacteria are being carried into the Chicago River, harming aquatic life and creating unsafe conditions for humans. Wildlife in the river is particularly vulnerable, with fish struggling to survive due to oxygen depletion caused by algae blooms. The overflows also disrupt the food chain and contribute to environmental degradation. Residents and local ecosystems face heightened risks as climate change intensifies rainfall events, further straining the city's infrastructure.