Liverpool Municipal Authority Sewage Treatment Plant - Secondary Treatment in Pennsylvania

The Liverpool Municipal Authority Sewage Treatment Plant (STP) is a publicly owned wastewater facility serving the borough of Liverpool in Perry County, Pennsylvania. Located along Susquehanna Trail, the plant provides secondary treatment for a population of approximately 806 residents, making it a small-scale municipal facility. As a secondary treatment plant, it meets the minimum federal standard under the U.S. Clean Water Act for municipal wastewater treatment. The plant has a designed capacity of 378.54 cubic meters per day and discharges a similar volume, indicating full utilization. Secondary treatment typically involves biological oxidation followed by clarification. The plant's treated effluent enters the Susquehanna River watershed, which flows south through Pennsylvania and into the Chesapeake Bay. The Susquehanna is the largest river feeding the Chesapeake Bay estuary, a critical ecosystem for fish, shellfish, and migratory birds. The plant's discharge contributes to nutrient loads in the bay, making its operation relevant to regional water quality management.

The plant discharges into the Susquehanna River basin, which drains into the Chesapeake Bay, the largest estuary in the United States. The bay supports diverse aquatic life, including blue crabs, oysters, and striped bass, and is a vital migratory corridor for waterfowl. Nutrient pollution from wastewater plants in the watershed is a key concern for bay health, driving regulatory programs like the Chesapeake Bay Total Maximum Daily Load (TMDL).