CULBERTSON WWTP - Secondary Treatment Plant in Roosevelt County, Montana

CULBERTSON WWTP is a municipal wastewater treatment facility located in Roosevelt County, Montana, United States. The plant serves a population of approximately 819 residents, classifying it as a small community system under U.S. EPA guidelines. The plant provides secondary treatment, which is the minimum standard required by the U.S. Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 378.54 megaliters per year and treats an annual discharge volume of 302.83 megaliters, indicating operational capacity utilization within design limits. The treated effluent from CULBERTSON WWTP is discharged into a local water body, likely a tributary of the Missouri River basin, which ultimately drains into the Mississippi River and the Gulf of Mexico. The plant's operations are subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Montana Department of Environmental Quality, ensuring compliance with water quality standards to protect downstream aquatic ecosystems.

The plant discharges into a receiving water body within the Missouri River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. The local environment supports diverse aquatic life and is part of the Northern Great Plains ecosystem. Proper wastewater treatment is essential to prevent nutrient pollution and protect downstream water quality in this agriculturally important region.