CASS WWTP - Secondary Wastewater Treatment in Cass, West Virginia

CASS WWTP is a municipal wastewater treatment facility located in Cass, a small community in Pocahontas County, West Virginia. The plant serves a population of approximately 180 residents, reflecting its role as a small-scale treatment facility in a rural Appalachian setting. As a secondary treatment plant, CASS WWTP provides biological treatment to remove organic matter and suspended solids. The plant has a designed capacity of 302.83 thousand cubic meters per year and currently discharges 227.13 thousand cubic meters annually. Under the U.S. Clean Water Act, such facilities operate under National Pollutant Discharge Elimination System (NPDES) permits issued by the West Virginia Department of Environmental Protection, which set effluent limits to protect water quality. The plant's treated effluent is discharged into the Greenbrier River watershed, which flows through the Monongahela National Forest and eventually joins the New River. The New River is a tributary of the Kanawha River, which drains into the Ohio River and ultimately the Mississippi River. The surrounding area is ecologically significant, supporting diverse aquatic life and providing habitat for species such as the candy darter and the West Virginia spring salamander.

CASS WWTP discharges into the Greenbrier River watershed, which flows into the New River, a tributary of the Kanawha River and part of the Ohio-Mississippi River system. The receiving waters support diverse aquatic life, including sensitive species like the candy darter and the West Virginia spring salamander. The plant's secondary treatment helps protect downstream water quality in this ecologically rich Appalachian region.