Portia WWTP - Secondary Treatment Plant in Portia, Arkansas

Portia WWTP is a municipal wastewater treatment plant located in Portia, Lawrence County, Arkansas. The facility serves a small population of 437 residents, reflecting its role in a rural community within the state's northeastern region. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 340.69 million gallons and an annual discharge volume of 22.71 million gallons, the plant operates well below its capacity. As a US facility, it is subject to the Clean Water Act and likely operates under an NPDES permit issued by the Arkansas Department of Energy and Environment. The treated effluent is discharged into a local waterway, ultimately contributing to the Black River basin, which flows into the Mississippi River and then the Gulf of Mexico. The plant's operations help protect downstream aquatic ecosystems and maintain water quality in the region.

The plant discharges into a tributary of the Black River, which flows into the Mississippi River and eventually the Gulf of Mexico. This watershed supports diverse aquatic life and provides habitat for fish and migratory birds. The secondary treatment process reduces organic pollutants, helping to maintain the ecological health of the downstream river system.