Bloomington STP South - Monroe County, Indiana Wastewater Treatment Plant

Bloomington STP South is a municipal wastewater treatment plant located in Monroe County, Indiana, serving a population of around 53,800. The facility is part of the city's wastewater infrastructure, managed by local authorities to ensure compliance with environmental regulations. Under the US Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant's treatment processes are designed to reduce pollutants before discharging treated effluent into local water bodies. The treated wastewater from Bloomington STP South ultimately flows into the White River watershed, which drains into the Wabash River and then the Ohio River, contributing to the Mississippi River basin. This downstream network supports diverse aquatic life and provides water resources for communities and ecosystems along its course.

The plant discharges into the White River watershed, which flows through southern Indiana before joining the Wabash River. The Wabash River is a major tributary of the Ohio River, which feeds into the Mississippi River. This river system supports a variety of fish and wildlife, including migratory species, and provides drinking water for downstream communities. The region's karst topography and agricultural runoff can affect water quality, making effective treatment essential.