Montgomery Co Ma Eureka STP - Horsham Township, Pennsylvania Wastewater Treatment Plant

Montgomery Co Ma Eureka STP is a municipal wastewater treatment plant located in Horsham Township, Montgomery County, Pennsylvania. It serves a population of approximately 4,200 residents in this suburban community northwest of Philadelphia. As a U.S. facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program established by the Clean Water Act. For a plant serving this population size, secondary treatment is typically required, which includes biological treatment to remove organic matter and suspended solids. The plant discharges treated effluent into local waterways within the Delaware River watershed. The Delaware River basin supports diverse aquatic life and provides drinking water for millions. Proper treatment helps protect downstream ecosystems and water quality in the region.

The plant discharges into tributaries of the Delaware River, which flows into Delaware Bay and ultimately the Atlantic Ocean. The Delaware River watershed is ecologically significant, supporting migratory fish species such as American shad and providing critical habitat for freshwater mussels and other aquatic organisms. The region's water quality is managed under the Delaware River Basin Commission's regulations.