Overview
South Middleton Twp STP is an advanced wastewater treatment plant in South Middleton Township, Pennsylvania, serving approximately 4,000 people. It operates under the US Clean Water Act with a discharge volume of 984.21 units.
South Middleton Twp STP (South Middleton Township Sewage Treatment Plant) is a municipal wastewater facility located in South Middleton Township, Cumberland County, Pennsylvania. The plant serves a population of about 4,007 residents in the Springville and Boiling Springs areas, providing advanced treatment to protect local water quality. The plant employs advanced treatment processes, exceeding the secondary treatment standard required by the US Clean Water Act. With a designed capacity of 2,839.05 units and an average discharge volume of 984.21 units, the facility operates well below its capacity, indicating room for future growth. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to safeguard receiving waters. The treated effluent is discharged into a local water body that ultimately drains into the Susquehanna River basin and then to the Chesapeake Bay. The plant's advanced treatment helps reduce nutrient loads, contributing to the Chesapeake Bay restoration efforts and protecting downstream aquatic ecosystems.
Environmental context
The plant discharges into a tributary of the Susquehanna River, which flows into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay watershed is ecologically sensitive, supporting diverse aquatic life and important migratory bird populations. Advanced treatment at this plant helps minimize nutrient and pollutant loading, reducing the risk of algal blooms and hypoxia in the bay.
Frequently asked questions
South Middleton Twp STP is located on West 1st Street in Springville, Boiling Springs, South Middleton Township, Cumberland County, Pennsylvania, United States.
The plant serves approximately 4,007 residents in the South Middleton Township area, including the communities of Springville and Boiling Springs.
The plant discharges treated effluent into a local water body that flows into the Susquehanna River basin, ultimately reaching the Chesapeake Bay.
As a US wastewater facility, South Middleton Twp STP operates under the Clean Water Act and is regulated via an NPDES permit issued by the Pennsylvania Department of Environmental Protection, which sets effluent limits for pollutants.
For small to medium-sized communities in the US, secondary treatment is the minimum standard, but many plants like South Middleton Twp STP employ advanced treatment to meet stricter nutrient removal requirements, especially in watersheds sensitive to eutrophication.
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