Greenville POTW Wastewater Treatment Plant, Greenville, Mississippi

Greenville POTW is a municipal wastewater treatment plant located in Greenville, Washington County, Mississippi, along the Mississippi River. It serves a population of approximately 41,633 residents, classifying it as a medium-sized agglomeration under US regulatory standards. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. For a plant of this scale, secondary treatment is typically required, with additional nutrient controls possible in sensitive watersheds. The plant's treated effluent discharges into the Mississippi River, a major waterway that flows into the Gulf of Mexico. This river system supports diverse aquatic life and is a critical migratory corridor for fish and birds. The plant's operations contribute to maintaining water quality in the Lower Mississippi basin and ultimately the Gulf ecosystem.

The plant discharges into the Mississippi River, which flows southward through the Mississippi Delta and empties into the Gulf of Mexico. This watershed supports a rich aquatic ecosystem, including catfish, bass, and migratory waterfowl. Downstream, the river's nutrient load can contribute to hypoxic zones in the Gulf, making effective wastewater treatment important for regional water quality.