ELIZABETHTOWN BORO STP - Mount Joy Township, Pennsylvania Wastewater Treatment Plant

ELIZABETHTOWN BORO STP is a municipal wastewater treatment plant located in Mount Joy Township, Lancaster County, Pennsylvania. It serves a population of approximately 14,390 people, classifying it as a medium-sized facility under U.S. EPA guidelines. The plant is situated inland, more than 50 kilometers from the Atlantic coast, and its operations are integral to the region's water management infrastructure. As a U.S. facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. For a plant serving this population size, secondary treatment is typically required, with potential additional nutrient removal standards depending on the receiving water body's sensitivity. The plant's treatment processes and capacity details are managed by local authorities to ensure compliance with state and federal regulations. The treated effluent from ELIZABETHTOWN BORO STP is discharged into local streams that flow into the Susquehanna River, which ultimately drains into the Chesapeake Bay. The Chesapeake Bay watershed is ecologically significant, supporting diverse aquatic life and serving as a critical habitat for migratory fish and waterfowl. Nutrient management from wastewater plants in this basin is crucial to reduce hypoxia and protect the bay's health.

The plant discharges into tributaries 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 and supports a complex ecosystem of fish, crabs, and waterfowl. Nutrient loading from upstream sources, including wastewater plants, is a key concern for maintaining water quality and preventing algal blooms in the bay.