Walthall POTW - Secondary Wastewater Treatment Plant in Walthall, Mississippi

Walthall POTW is a municipal wastewater treatment plant located in Walthall, Webster County, Mississippi. It serves a small population of 167 residents, reflecting the rural character of the area. The plant is situated along Mississippi Highway 9 in the northern part of the state. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant's designed capacity is 109.78 million gallons per day, and it currently discharges 7.57 million gallons per day, indicating significant reserve capacity. The treated effluent is discharged into a local water body, likely a tributary of the Tombigbee River basin, which flows southward to the Gulf of Mexico. The plant's operations are subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Mississippi Department of Environmental Quality, ensuring compliance with water quality standards to protect downstream ecosystems.

The plant discharges into a receiving water body within the Tombigbee River basin, which ultimately drains into the Mobile River estuary and the Gulf of Mexico. This watershed supports diverse aquatic life, including fish and invertebrates, and provides important habitat for migratory birds. The secondary treatment process helps reduce nutrient and organic pollutant loads, protecting downstream water quality in this ecologically sensitive region.