Greenwood POTW - Wastewater Treatment Plant in Greenwood, Mississippi

Greenwood POTW is a municipal wastewater treatment plant located in Greenwood, Leflore County, Mississippi. The facility serves a population of about 18,906, placing it in the medium-agglomeration category under US regulatory frameworks. As a US-based plant, Greenwood POTW operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Mississippi Department of Environmental Quality. These permits set effluent limits and monitoring requirements to protect water quality. For plants serving this population size, secondary treatment is typically required as the minimum standard. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Yazoo River and then the Mississippi River. This downstream connection to the Mississippi River system makes the plant's operations significant for the broader aquatic ecosystem, including the Gulf of Mexico, where nutrient management is a key concern.

Greenwood POTW discharges into the Yazoo River basin, a tributary of the Mississippi River. The Mississippi River system supports diverse aquatic life and is a critical migratory corridor for fish and birds. Downstream, the river flows into the Gulf of Mexico, where nutrient loading from upstream sources can contribute to hypoxic zones. Effective treatment at plants like Greenwood helps mitigate these ecological impacts.