Siloam Springs WWTP - Municipal Wastewater Treatment in Siloam Springs, Arkansas

Siloam Springs WWTP is a municipal wastewater treatment facility located in Siloam Springs, Arkansas, serving a population of about 15,916. The plant is situated inland in Benton County, part of the Ozark region, and treats wastewater from the local community before discharging into nearby waterways. Under the U.S. Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permit program. The Arkansas Department of Energy and Environment - Division of Environmental Quality oversees permitting and compliance for wastewater facilities in the state. The treated effluent from Siloam Springs WWTP likely discharges into a tributary of the Illinois River, which flows into the Arkansas River and eventually the Mississippi River. This watershed supports diverse aquatic life and is part of the larger Mississippi River basin, a critical ecological corridor in North America.

The plant's discharge enters a tributary of the Illinois River, which flows into the Arkansas River and then the Mississippi River. This watershed supports diverse aquatic species and is an important migratory route for birds and fish. The Ozark region's karst geology makes groundwater particularly sensitive to contamination, emphasizing the need for effective treatment.