Tioga Lagoon Wastewater Treatment Plant, Tioga, North Dakota

Tioga Lagoon is a municipal wastewater treatment facility located in Tioga, Williams County, North Dakota. The plant serves a population of about 1,230 residents and operates as a lagoon-based secondary treatment system, which is common for small communities in the region. The plant provides secondary treatment, meeting the standard requirements under the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 757.08 cubic meters per day and a current discharge volume of 454.25 cubic meters per day, the facility operates below its capacity, allowing for future growth or seasonal variations. The treated effluent is discharged into local waterways that drain into the Missouri River basin, ultimately reaching the Gulf of Mexico. The plant plays a key role in protecting the local watershed and downstream aquatic ecosystems from untreated sewage.

Tioga Lagoon discharges into receiving waters that flow into the Missouri River, a major tributary of the Mississippi River system. The local watershed supports diverse aquatic life and is part of the larger Mississippi River basin, which empties into the Gulf of Mexico. The plant's secondary treatment helps reduce nutrient loading and protect downstream water quality.