Overview
Whitemarsh Township Authority STP serves approximately 15,100 people in Whitemarsh Township, Pennsylvania. The plant operates under the US Clean Water Act NPDES permit program.
Whitemarsh Township Authority Sewage Treatment Plant (STP) is a municipal wastewater facility serving Whitemarsh Township in Montgomery County, Pennsylvania. The plant provides wastewater treatment for a population of about 15,100 residents within the Philadelphia metropolitan area. As a US-based facility serving a medium-sized agglomeration, the plant is subject to the National Pollutant Discharge Elimination System (NPDES) under the Clean Water Act. This regulatory framework requires permits that set effluent limits based on the receiving water body's designated uses. Treatment typically includes secondary treatment as a minimum standard for municipal plants of this scale. The plant's treated effluent discharges into local waterways within the Delaware River watershed, which ultimately drains to the Delaware Bay and the Atlantic Ocean. The receiving waters support aquatic life and are part of a regionally important river system that provides drinking water and recreational opportunities for millions in the northeastern United States.
Environmental context
The plant discharges into tributaries of the Delaware River, which flows through Pennsylvania, New Jersey, and Delaware before emptying into the Delaware Bay and the Atlantic Ocean. The Delaware River watershed is ecologically significant, supporting diverse fish populations including American shad and striped bass, and providing habitat for migratory birds along the Atlantic Flyway.
Frequently asked questions
The plant is located at the Whitemarsh Parks and Recreation Building on Joshua Road in Marble Hall, Whitemarsh Township, Montgomery County, Pennsylvania, USA.
The plant serves approximately 15,100 people in Whitemarsh Township and surrounding areas.
The plant discharges treated effluent into local waterways within the Delaware River watershed, which ultimately flows to the Delaware Bay and Atlantic Ocean.
As a US municipal wastewater plant, it operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES), which requires permits with effluent limits to protect water quality.
Plants of this scale in the US typically provide at least secondary treatment, which uses biological processes to remove organic matter and suspended solids, meeting EPA standards under the Clean Water Act.
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