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Wastewater Treatment

Mandan's Wastewater Treatment Plant receives wastewater from industrial, commercial and residential sources, treating an average of 1.6 million gallons per day (MGD). Treated water from the plant is continuously discharged to the Missouri River.

The primary objective of the plant is to produce the highest quality effluent possible while ensuring the protection of the downstream water user.

The plant is designed to treat an average daily flow of 2.2 MGD with a peak design of 5.0 MGD. It is a Class IV mechanical treatment plant constructed in 1997. The plant operates in accordance with a North Dakota Pollutant Discharge Elimination System (NDPDES) permit.

The wastewater treatment plant is staffed with a superintendent, assistant superintendent, laboratory technician and two operators. Normal hours are Monday through Friday 8 a.m. to 4:30 p.m. with one person on call every week for weekends and after hour emergencies.

Information in this section:


Administration & Control

Treatment Process

Solids Handling

Material Disposal Tips