PEQUOT LAKES STP - Secondary Wastewater Treatment Plant in Rushford, Minnesota

PEQUOT LAKES STP serves the community of Rushford in Fillmore County, Minnesota. The plant provides secondary treatment for a population of 2,405, operating under the regulatory framework of the US Clean Water Act, which requires NPDES permits for such facilities. Its designed capacity is 950.14, with a current discharge volume of 776.01. The plant's treatment process is secondary, which is typical for smaller agglomerations in the United States. Under the Clean Water Act, secondary treatment is the minimum standard for municipal wastewater plants, ensuring significant reduction of organic matter and suspended solids. The plant's capacity utilization suggests it operates below its design capacity, indicating room for future growth. The treated effluent from PEQUOT LAKES STP is discharged into local waterways that ultimately drain into the Mississippi River basin. This region is part of the Upper Mississippi River watershed, which supports diverse aquatic life and provides important habitat for migratory birds. The plant's discharge contributes to the overall water quality of the downstream environment, which is monitored under state and federal regulations.

The plant discharges into the Root River watershed, a tributary of the Upper Mississippi River. The Root River flows through southeastern Minnesota, supporting coldwater fisheries and recreational activities. Downstream, the Mississippi River carries the effluent to the Gulf of Mexico, where nutrient loading from upstream sources contributes to the hypoxic zone. The plant's secondary treatment helps reduce organic pollutants, but nutrient removal may be limited without tertiary processes.