Roxbury T Grand Gorge STP NYC - Advanced Wastewater Treatment in Grand Gorge, New York

Roxbury T Grand Gorge STP NYC is an advanced wastewater treatment facility located in Grand Gorge, a hamlet within the Town of Roxbury in Delaware County, New York. The plant serves a population of approximately 1,561 residents, reflecting a small community-scale operation in the rural Catskill Mountains region. As part of New York City's water supply system, the plant plays a role in protecting the watershed that supplies the city's unfiltered drinking water. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. This level of treatment is typical for facilities in sensitive watersheds like the Catskill/Delaware system, where stringent effluent standards are enforced to protect source water quality. The plant has a designed capacity of 1,892.70 units and currently discharges 310.40 units, indicating significant spare capacity for future growth or seasonal variations. The treated effluent is discharged into local waterways that ultimately drain into the East Branch of the Delaware River, a key tributary of the Delaware River Basin. This basin provides drinking water for millions in New York City and Philadelphia, making the plant's advanced treatment critical for downstream water quality. The surrounding Catskill region is ecologically sensitive, supporting diverse aquatic life and serving as an important migratory corridor for fish and birds.

The plant discharges into the East Branch of the Delaware River, which flows into the mainstem Delaware River and eventually into Delaware Bay. This watershed is part of the larger Delaware River Basin, which supplies drinking water to over 15 million people. The Catskill region's forests and streams provide critical habitat for native brook trout and other coldwater species, making nutrient and sediment control essential for maintaining ecological health.