Overview
GROTTOES STP is a secondary wastewater treatment plant serving 1,076 people in Grottoes, Virginia, USA. It discharges 416.40 million gallons per year and has a designed capacity of 757.08 million gallons per year.
GROTTOES STP is a municipal wastewater treatment plant located in Grottoes, Rockingham County, Virginia. The plant serves a population of approximately 1,076 residents and operates as part of the region's wastewater infrastructure. Its location in the Shenandoah Valley places it within a rural to suburban setting, contributing to local water quality management. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal facilities. With a designed capacity of 757.08 million gallons per year and an actual discharge volume of 416.40 million gallons per year, the plant operates below its capacity. The U.S. Environmental Protection Agency (EPA) and the Virginia Department of Environmental Quality (DEQ) regulate such plants through National Pollutant Discharge Elimination System (NPDES) permits, ensuring compliance with effluent limits. The treated effluent from GROTTOES STP is discharged into a local waterway that eventually drains into the South Fork Shenandoah River, a tributary of the Potomac River and ultimately the Chesapeake Bay. The Chesapeake Bay watershed is ecologically significant, supporting diverse aquatic life and fisheries. The plant's operations help protect downstream water quality in this sensitive estuarine ecosystem.
Environmental context
The treated effluent from GROTTOES STP enters a local stream that flows into the South Fork Shenandoah River, part of the Potomac River basin. The Potomac River drains into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay supports a complex ecosystem of fish, crabs, and migratory birds, and is sensitive to nutrient pollution. Secondary treatment at this plant reduces organic matter and nutrients, helping to mitigate eutrophication risks in the bay.
Frequently asked questions
GROTTOES STP is located at 20th Street in Grottoes, Rockingham County, Virginia, United States.
The plant serves a population of approximately 1,076 people.
The plant discharges treated effluent into a local stream that flows into the South Fork Shenandoah River, part of the Potomac River basin leading to the Chesapeake Bay.
As a U.S. municipal wastewater plant, GROTTOES STP operates under the Clean Water Act and is regulated by the EPA and Virginia DEQ through an NPDES permit, which sets effluent limits for secondary treatment.
For small communities in the U.S., secondary treatment is the standard requirement under the Clean Water Act, which typically includes biological treatment to reduce organic matter and suspended solids.
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