Spring Creek STP - Clay Township, Pennsylvania Wastewater Treatment Plant

Spring Creek STP is a municipal wastewater treatment facility located in Clay Township, Huntingdon County, Pennsylvania. It serves a small population of 1,078 residents, reflecting the rural character of the area. The plant is situated near Pogue Road in the central part of the state, within the Susquehanna River basin. The facility provides secondary treatment, which is the standard biological treatment required under the U.S. Clean Water Act for municipal plants. It has a designed capacity of 416.39 million gallons per year and currently discharges 340.69 million gallons annually, indicating it operates below capacity. As a small plant, it is subject to EPA National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent from Spring Creek STP flows into local streams that drain into the Juniata River, a major tributary of the Susquehanna River. The Susquehanna ultimately empties into the Chesapeake Bay, the largest estuary in the United States. The plant's discharge contributes to the nutrient and sediment loads that affect the bay's ecosystem, making its treatment performance important for downstream water quality.

Spring Creek STP discharges into headwater streams of the Juniata River, which flows into the Susquehanna River and then to the Chesapeake Bay. The Chesapeake Bay watershed is ecologically sensitive, supporting diverse aquatic life including striped bass, blue crabs, and oysters. Nutrient pollution from wastewater treatment plants is a key concern for the bay's health, and the plant's secondary treatment helps reduce but does not eliminate nutrient loads.