Junction City WWTP - Union County, Arkansas Wastewater Treatment Plant

Junction City WWTP is a municipal wastewater treatment facility located in Union County, Arkansas, United States. The plant serves a small population of 581 residents and operates under secondary treatment standards, which is the minimum required by the US Clean Water Act for municipal wastewater treatment. The plant has a designed capacity of 492.10 million gallons per day and currently discharges 11.36 million gallons per day, indicating significant available capacity. As a US facility, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Ouachita River basin, which flows through Arkansas and Louisiana before reaching the Mississippi River. This watershed supports diverse aquatic life and provides drinking water for downstream communities.

The plant discharges into a tributary of the Ouachita River, which flows southward through Arkansas and Louisiana, eventually joining the Mississippi River. The Ouachita River basin supports a variety of fish species and provides habitat for migratory birds. The region's forested watershed helps maintain water quality, but nutrient loading from wastewater can impact downstream ecosystems.