Wood River STP - Wastewater Treatment Plant in Wood River, Illinois

Wood River STP is a municipal wastewater treatment facility located at 401 South Main Street in Wood River, Illinois, serving a population of about 18,143. The plant is situated in Madison County, within the Mississippi River watershed, and plays a key role in managing wastewater for this community. As a U.S. facility, Wood River STP operates under the Clean Water Act, which requires NPDES permits for all discharges. It is subject to state and federal regulations ensuring effluent quality. The treated wastewater from Wood River STP ultimately discharges into the Mississippi River basin, which drains into the Gulf of Mexico. This river system supports diverse aquatic life and is a critical migratory corridor for birds and fish. The plant's operations help protect downstream water quality and the ecological health of the Mississippi River.

Wood River STP discharges into the Mississippi River watershed, which flows south to the Gulf of Mexico. The Mississippi River is a major ecological corridor supporting diverse fish, bird, and plant species. The plant's location in the upper Mississippi basin means its effluent contributes to the river's overall water quality, affecting downstream habitats and the hypoxic zone in the Gulf.