Pembroke STP - Narrows, Virginia Wastewater Treatment Plant

Pembroke STP is a municipal wastewater treatment plant located in Narrows, Giles County, Virginia, serving a population of approximately 1,384. The facility operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal plants discharging to surface waters. The plant provides secondary treatment, a standard biological process that removes biodegradable organic matter and suspended solids. With a designed capacity of 757.08 million gallons per year, the plant currently treats an average annual discharge volume of 264.98 million gallons, indicating significant reserve capacity. The treated effluent is discharged into a receiving water body within the New River watershed, which flows northward through Virginia and West Virginia before joining the Kanawha River and ultimately the Ohio River. This system supports diverse aquatic life and provides recreational and drinking water resources for downstream communities.

The plant discharges into the New River basin, part of the larger Ohio River watershed. The New River is one of the oldest rivers in North America and supports a variety of fish species, including smallmouth bass and muskellunge. Downstream, the river flows through the Appalachian region, providing habitat for freshwater mussels and other sensitive aquatic organisms. The plant's secondary treatment helps protect water quality in this ecologically significant system.