Mandan WWTP: Municipal Wastewater Treatment in Mandan, North Dakota

Mandan WWTP is a municipal wastewater treatment facility located in Mandan, Morton County, North Dakota, serving a population of about 18,331. The plant is situated near the Missouri River, which is a major tributary of the Mississippi River system. As a medium-sized agglomeration, the facility plays a key role in managing wastewater for the city and surrounding area. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater plants of this scale. The designed capacity is 1.00 million gallons per day, indicating a facility sized to handle the community's wastewater flows. Compliance with National Pollutant Discharge Elimination System (NPDES) permits is typical for such plants, ensuring discharge limits are met. The treated effluent from Mandan WWTP ultimately flows into the Missouri River, which drains into the Mississippi River and then the Gulf of Mexico. The plant's operations help protect the Missouri River's water quality, supporting aquatic life and downstream uses such as recreation and drinking water supply.

Mandan WWTP discharges into the Missouri River basin, part of the larger Mississippi River watershed that drains to the Gulf of Mexico. The Missouri River in this region supports diverse aquatic species and is an important migratory corridor for birds. The plant's treatment helps reduce nutrient and pollutant loads, contributing to the ecological health of the river and downstream environments.