LONGVILLE STP - Secondary Wastewater Treatment in Longville, Minnesota

LONGVILLE STP is a municipal wastewater treatment facility located in Longville, Cass County, Minnesota. It serves a small population of 151 residents, reflecting the rural character of the area. The plant is situated in the northern part of the state, near numerous lakes and forests. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. With a designed capacity of 230.91 and an average daily discharge of 117.35, the facility operates well within its capacity. As a small plant, it is subject to state-level permitting through the Minnesota Pollution Control Agency, which enforces effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Mississippi River Basin. This region is ecologically sensitive, supporting diverse aquatic life and recreational uses. Proper treatment helps maintain water quality in downstream lakes and rivers, which are vital for the local ecosystem and community.

The plant discharges into a local waterway that flows into the Mississippi River Basin, eventually reaching the Gulf of Mexico. The surrounding area features numerous lakes and wetlands that provide habitat for fish, waterfowl, and other wildlife. Protecting these waters from nutrient pollution is critical to prevent algal blooms and maintain recreational and ecological value.