Greenfield Township Blair STP - Pennsylvania Wastewater Treatment Plant Serving 706 Residents

Greenfield Township Blair STP is a municipal wastewater treatment plant located in Greenfield Township, Blair County, Pennsylvania. It serves a small population of 706 residents, typical of rural facilities in the Appalachian region. As a US plant serving fewer than 10,000 people, it operates under the EPA's National Pollutant Discharge Elimination System (NPDES) permit program, which sets discharge limits based on water quality standards. The plant's treatment process is designed to meet secondary treatment requirements under the Clean Water Act. The plant discharges into local streams that drain into the Juniata River watershed, part of the larger Susquehanna River basin. This region supports diverse aquatic life and provides drinking water for downstream communities. Proper treatment protects these water resources from nutrient pollution and pathogens.

The plant discharges into tributaries of the Juniata River, which flows into the Susquehanna River and ultimately reaches the Chesapeake Bay. The Chesapeake Bay watershed is ecologically sensitive, supporting diverse fish and shellfish populations. Nutrient removal at plants like this helps reduce algal blooms and hypoxia in the bay.