Mountainburg WWTP - Advanced Wastewater Treatment in Mountainburg, Arkansas

Mountainburg WWTP is a municipal wastewater treatment facility located in Mountainburg, Crawford County, Arkansas, United States. The plant serves a small population of 631 residents, reflecting the rural character of the area. It is situated along State Highway 282 and operates under the regulatory framework of the US Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant employs advanced treatment processes, which go beyond secondary treatment to remove additional nutrients and contaminants. This level of treatment is typically required for sensitive receiving waters or to meet stringent water quality standards. The facility has a designed capacity of 454.25 units and currently treats an average daily flow of 204.41 units, indicating ample reserve capacity for future growth. The treated effluent from Mountainburg WWTP is discharged into a local water body that ultimately drains into the Arkansas River watershed, part of the larger Mississippi River basin. The advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the region. The plant's inland location, over 50 km from the coast, reduces direct marine impact but underscores its role in maintaining freshwater quality.

The plant discharges into a tributary of the Arkansas River, which flows into the Mississippi River and eventually the Gulf of Mexico. The watershed supports diverse aquatic life and is important for regional biodiversity. Advanced treatment at this facility helps reduce nutrient loading, which is critical for preventing eutrophication in downstream water bodies.