Mannington WWTP - Advanced Wastewater Treatment in Mannington, West Virginia

Mannington WWTP is an advanced wastewater treatment plant located in Mannington, Marion County, West Virginia. The facility serves a population of approximately 992 residents, operating as part of the municipal infrastructure for the community. Its location in the Appalachian region places it within a rural, inland setting. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 946.35 cubic meters per day and an average daily discharge of 757.08 cubic meters, the facility operates well within its capacity. As a US-based plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the West Virginia Department of Environmental Protection, ensuring compliance with federal water quality standards. The treated effluent is discharged into local waterways that ultimately drain into the Monongahela River, a major tributary of the Ohio River. This river system supports diverse aquatic life and provides drinking water for downstream communities. The advanced treatment level helps protect water quality in the region, particularly in the context of the Appalachian watershed's ecological sensitivity.

The plant discharges into local streams that flow into the Monongahela River, which joins the Ohio River and eventually the Mississippi River. This watershed supports a variety of fish species and provides habitat for freshwater mussels. The advanced treatment reduces nutrient loading, helping to prevent eutrophication in downstream water bodies and maintaining the ecological health of the Monongahela River basin.