Patch Grove STP - Advanced Wastewater Treatment in Patch Grove, Wisconsin

Patch Grove STP is a municipal wastewater treatment facility located in Patch Grove, Grant County, Wisconsin, serving a small population of 598. The plant provides advanced treatment, ensuring high-quality effluent before discharge. As a small-scale facility, it plays a vital role in protecting local water resources in the rural Driftless Area of southwestern Wisconsin. The plant's advanced treatment process goes beyond secondary standards, typically incorporating nutrient removal or filtration. With a designed capacity of 283.91 megaliters and an annual discharge volume of 151.42 megaliters, it operates well within its capacity. Under the U.S. Clean Water Act, the facility is permitted through the Wisconsin Department of Natural Resources' NPDES program, which sets effluent limits to safeguard receiving waters. The treated effluent likely discharges to a tributary of the Grant River, which flows into the Mississippi River. The Mississippi River is a major ecological corridor supporting diverse aquatic life and migratory birds. The plant's advanced treatment helps minimize nutrient loading, protecting downstream water quality in the Mississippi River basin.

The plant discharges into a local stream that drains to the Grant River, a tributary of the Mississippi River. The Mississippi River is a vital ecological corridor supporting diverse aquatic species, including freshwater mussels and migratory fish. The plant's advanced treatment reduces nutrient and pollutant loads, helping to maintain water quality in the Mississippi River basin, which ultimately flows to the Gulf of Mexico.