SLTMA Campbelltown West STP - Advanced Wastewater Treatment in South Londonderry Township, Pennsylvania

SLTMA Campbelltown West STP is an advanced wastewater treatment facility located in South Londonderry Township, Lebanon County, Pennsylvania. The plant serves a population of approximately 1,328 residents in the Campbelltown area, providing essential wastewater management for this small community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 643.52 million gallons per day and a discharge volume matching that figure, the facility operates at full 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 Pennsylvania Department of Environmental Protection, which set effluent limits to protect water quality. The treated effluent is discharged into a local waterway that ultimately drains into the Susquehanna River basin, which flows into the Chesapeake Bay. The Chesapeake Bay is a large estuary of ecological significance, supporting diverse aquatic life and fisheries. The plant's advanced treatment helps reduce nutrient loading to the bay, contributing to regional water quality improvement efforts.

The plant discharges into a tributary of the Susquehanna River, which flows south through Pennsylvania and Maryland into the Chesapeake Bay. The Chesapeake Bay is the largest estuary in the United States, supporting a rich ecosystem of fish, crabs, and waterfowl. Nutrient pollution from wastewater is a key concern for the bay, and advanced treatment at this plant helps reduce nitrogen and phosphorus loads, protecting downstream habitats and recreational uses.