Cooperstown Lagoon Wastewater Treatment Plant, Cooperstown, North Dakota

Cooperstown Lagoon is a municipal wastewater treatment facility located in Cooperstown, North Dakota, serving a population of approximately 984 residents. The plant operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater to protect water quality. As a lagoon system, it provides biological treatment through natural processes, meeting the secondary treatment standards set by the Environmental Protection Agency. The plant's designed capacity is 529.96 million gallons per year, with a similar discharge volume, indicating it operates at full capacity. Under the Clean Water Act, the facility must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the state of North Dakota, which set limits on effluent quality to safeguard receiving waters. The treated wastewater from Cooperstown Lagoon is discharged into the local watershed, which drains into the Sheyenne River and eventually the Red River of the North. This river system flows north into Lake Winnipeg in Canada, supporting diverse aquatic life and providing water for agriculture and recreation. The plant's secondary treatment helps reduce nutrient loads and protect downstream ecosystems.

The treated effluent from Cooperstown Lagoon enters the local watershed, which flows into the Sheyenne River, a tributary of the Red River of the North. The Red River ultimately drains into Lake Winnipeg, a large lake that supports important fisheries and migratory bird populations. The plant's secondary treatment reduces organic matter and nutrients, helping to prevent eutrophication in downstream water bodies and maintain ecological balance in the region.