Brookings WWT Facility - Municipal Wastewater Treatment in Brookings County, South Dakota

Brookings WWT Facility is a municipal wastewater treatment plant located in Brookings County, South Dakota, serving a population of about 15,314. The facility is situated in the Big Sioux River watershed, which drains into the Missouri River and ultimately the Gulf of Mexico. As a US-based plant serving a medium-sized agglomeration, it operates under the Clean Water Act and is regulated by an NPDES permit issued by the South Dakota Department of Agriculture and Natural Resources. Such permits typically require secondary treatment and may include nutrient limits to protect downstream water quality. The plant's treated effluent discharges into the Big Sioux River basin, which flows through eastern South Dakota and supports diverse aquatic life. The river is an important tributary of the Missouri River, contributing to the larger Mississippi River system. The plant plays a key role in protecting local water quality and the ecological health of the Big Sioux River.

The plant discharges into the Big Sioux River basin, which flows into the Missouri River and then the Mississippi River to the Gulf of Mexico. The Big Sioux River supports diverse fish and macroinvertebrate communities and is used for recreation and irrigation. The plant's operations help maintain water quality in this agriculturally important region.