PLAZA LAGOON Wastewater Treatment Plant, Plaza, North Dakota

PLAZA LAGOON is a wastewater treatment plant located in Plaza, North Dakota, serving a small population of 171 residents. The facility provides secondary treatment, a standard level for small communities in the United States, ensuring compliance with the Clean Water Act. The plant has a designed capacity of 37.85 units and discharges a similar volume, indicating full utilization. As a US facility, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body, likely tributary to the Missouri River basin. The surrounding area is rural and agricultural, making the plant's role in preventing nutrient pollution critical for downstream ecosystems.

The plant discharges into a local watercourse that drains into the Missouri River, a major tributary of the Mississippi River system. This watershed supports diverse aquatic life and is important for regional agriculture. Proper treatment helps prevent eutrophication and maintains water quality for downstream communities.