Jamestown’s wastewater treatment plant is located on the Bloom exit of Interstate 94 and is noticeable by the burning methane at night. The wastewater plant ensures public health by properly treating and discharge of treated water to the James River. The department also monitors the discharge into river for the North Dakota Department of Health. The plant treats an average of 2.7 million gallons of water a day. It has the capacity to treat 4.5 million gallons of water a day.

The department treats the water from all of the city’s sewage and the water from Cavendish Farms, for which the plant was built. The treatment plant also features a certified lab.