Zeeland Lagoon Wastewater Treatment Plant, Zeeland, North Dakota

Zeeland Lagoon is a municipal wastewater treatment facility located in Zeeland, North Dakota, serving a small population of 86 residents. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for most municipal facilities to reduce organic pollutants and suspended solids before discharge. As a small-scale plant, it operates under the National Pollutant Discharge Elimination System (NPDES) permitting program, which sets effluent limits to protect water quality. The plant's designed capacity is 75.71 cubic meters per day, matching its current discharge volume, indicating full utilization of its treatment capacity. The treated effluent is discharged into local surface waters that ultimately drain into the Missouri River watershed, a major tributary of the Mississippi River system. This discharge contributes to the overall water quality management of the region, supporting downstream aquatic ecosystems and agricultural water uses.

The plant's discharge enters local streams that flow into the Missouri River, which is a major waterway in the Great Plains region. The Missouri River supports diverse aquatic life, including fish species such as paddlefish and sturgeon, and provides habitat for migratory birds. Downstream, the river joins the Mississippi River, eventually reaching the Gulf of Mexico, where nutrient loading from upstream sources can contribute to hypoxic zones.