Osnabrock Lagoon Wastewater Treatment Plant, Osnabrock, North Dakota

Osnabrock Lagoon is a municipal wastewater treatment facility located in Osnabrock, a small town in Cavalier County, North Dakota. The plant serves a population of 134 and operates as a lagoon system providing secondary treatment, which is typical for small communities in the region. The plant has a designed capacity of 75.71 million gallons per day and currently treats a discharge volume of 56.78 million gallons per day. As a US facility, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the North Dakota Department of Environmental Quality, ensuring compliance with federal water quality standards. The treated effluent is discharged into local surface waters that drain into the Red River of the North basin, ultimately flowing into Lake Winnipeg in Canada. This watershed supports agricultural and wetland ecosystems, and the plant's secondary treatment helps protect downstream water quality and aquatic habitats.

The plant discharges into the Red River of the North basin, which flows northward into Lake Winnipeg. This watershed is ecologically significant for migratory birds and supports diverse aquatic life. The region's flat terrain and agricultural land use make nutrient management important to prevent eutrophication in downstream lakes.