Cologne WWTF - Secondary Wastewater Treatment Plant in Cologne, Minnesota

Cologne WWTF is a municipal wastewater treatment facility located in Cologne, Minnesota, United States. The plant serves a population of 1,620 and operates under secondary treatment, which is the standard level required by the US Clean Water Act for most municipal plants. The facility has a designed capacity of 1,854.85 million gallons per year and currently discharges 995.56 million gallons per year, indicating it operates below its capacity. As a secondary treatment plant, Cologne WWTF uses biological processes to remove organic matter and suspended solids from wastewater. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. For a plant of this size, typical NPDES permits require compliance with secondary treatment standards and may include monitoring for nutrients or other pollutants. The treated effluent from Cologne WWTF is discharged into a local water body, likely a stream or river within the Minnesota River Basin. This basin ultimately drains into the Mississippi River, which flows to the Gulf of Mexico. The plant's discharge contributes to the overall water quality in the region, and its secondary treatment helps reduce the impact on downstream ecosystems.

Cologne WWTF discharges into a local water body within the Minnesota River Basin, which flows into the Mississippi River and eventually reaches the Gulf of Mexico. The downstream environment includes diverse aquatic habitats that support fish, invertebrates, and migratory birds. Secondary treatment reduces organic pollutants and suspended solids, helping to maintain water quality in the receiving stream and minimizing eutrophication risks in downstream waters.