Mantador Lagoon Wastewater Treatment Plant, Mantador, North Dakota

Mantador Lagoon is a municipal wastewater treatment plant located in Mantador, North Dakota, a small community in Richland County. The facility serves a population of 64 and operates with secondary treatment, which is standard for small agglomerations in the United States. The plant's designed capacity is 37.85 million gallons per year, matching its discharge volume. As a secondary treatment plant, Mantador Lagoon uses biological processes to reduce organic matter and suspended solids, meeting the requirements of the US Clean Water Act. The facility is likely permitted under the National Pollutant Discharge Elimination System (NPDES), which sets effluent limits to protect water quality. For small populations like this, lagoon systems are common in rural areas due to their low operational costs and effective treatment. The treated effluent from Mantador Lagoon is discharged into local waterways that drain into the Red River of the North basin. This river flows north into Canada, eventually reaching Lake Winnipeg. The watershed supports agricultural activities and provides habitat for fish and waterfowl. Proper treatment is essential to prevent nutrient pollution that could affect downstream ecosystems.

Mantador Lagoon discharges into the Red River of the North basin, which flows northward through North Dakota and Minnesota into Manitoba, Canada, ultimately reaching Lake Winnipeg. The Red River basin is a flat, agricultural region prone to seasonal flooding. Nutrient loading from wastewater can contribute to algal blooms in Lake Winnipeg, making effective treatment critical for downstream water quality.