ANETA LAGOON Wastewater Treatment Plant, Aneta, North Dakota

ANETA LAGOON is a municipal wastewater treatment facility located in Aneta, a small town in Griggs County, North Dakota. Serving a population of 222, the plant is designed for the community's modest scale and operates under secondary treatment standards. The plant employs secondary treatment, a standard biological process that reduces organic matter and suspended solids. With a designed capacity of 151.42 megaliters per year and an actual discharge volume of 113.56 megaliters per year, the facility operates below its capacity. As a US plant, it falls under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permitting program, which sets effluent limits to protect water quality. The treated effluent from ANETA LAGOON is discharged into local waterways that ultimately drain into the Red River Basin, which flows north into Lake Winnipeg in Canada. The plant's location in the Great Plains region means it plays a role in maintaining water quality in a watershed that supports agriculture and wildlife habitats.

ANETA LAGOON discharges into tributaries of the Red River of the North, which flows into Lake Winnipeg, a large and ecologically sensitive lake. The Red River Basin is characterized by flat terrain and agricultural land use, making nutrient management critical to prevent eutrophication in downstream waters. The plant's secondary treatment helps reduce organic pollutants, but nutrient removal may be limited without tertiary processes.