Newtown Lagoon Wastewater Treatment Plant, New Town, North Dakota

Newtown Lagoon is a municipal wastewater treatment facility located in New Town, Mountrail County, North Dakota. The plant serves a population of around 1,925 residents and operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges. As a lagoon-based system, it provides biological treatment through natural processes in aerated or facultative ponds. The plant has a designed capacity of 681.37 cubic meters per day and discharges a similar volume of treated wastewater. Secondary treatment typically involves biological oxidation and settling to reduce organic pollutants and suspended solids. The facility is subject to National Pollutant Discharge Elimination System (NPDES) permitting, administered by the North Dakota Department of Environmental Quality, which sets effluent limits to protect water quality. The treated effluent from Newtown Lagoon ultimately drains into the Missouri River watershed, one of the major river systems in North America. The plant is located within 10 kilometers of Lake Sakakawea, a large reservoir on the Missouri River that supports diverse aquatic life and recreational activities. The discharge contributes to the overall nutrient and flow dynamics of the lake and downstream river reaches, which are important for regional ecology and water supply.

Newtown Lagoon discharges into the Missouri River basin, specifically near Lake Sakakawea, a large impoundment on the Missouri River. The lake supports a variety of fish species, including walleye and northern pike, and provides habitat for migratory waterfowl. Downstream, the Missouri River flows through the Great Plains and eventually joins the Mississippi River, making the plant's effluent part of a vast drainage network that reaches the Gulf of Mexico. Nutrient loading from wastewater can contribute to algal blooms in the reservoir, so treatment performance is critical for maintaining water quality.