Overview
Onondaga Co Metro Syracuse STP serves approximately 270,000 people in Syracuse, New York. The plant discharges treated wastewater into Onondaga Lake, part of the Lake Ontario basin.
The Onondaga County Metropolitan Syracuse Wastewater Treatment Plant (STP) is a major municipal facility located in Syracuse, New York, on the shores of Onondaga Lake. Serving a population of around 270,000, it is one of the largest treatment plants in the region, managed by Onondaga County. The plant plays a critical role in protecting public health and the environment in Central New York. As a large agglomeration under the U. S. Clean Water Act, the plant is required to meet secondary treatment standards and operate under a National Pollutant Discharge Elimination System (NPDES) permit issued by the New York State Department of Environmental Conservation. The permit sets limits on pollutants such as biochemical oxygen demand, total suspended solids, and nutrients to ensure the treated effluent meets water quality standards for the receiving water body. The plant discharges treated effluent into Onondaga Lake, which flows via the Seneca River into the Oswego River and ultimately into Lake Ontario, part of the Great Lakes system. Onondaga Lake has historically been impacted by industrial pollution and sewage discharges, but extensive remediation efforts have improved water quality. The plant's operations are vital to maintaining these gains and supporting recreational use and aquatic life in the lake.
Environmental context
The plant discharges into Onondaga Lake, a 4.6-square-mile lake in Central New York that drains into the Seneca River, then the Oswego River, and finally Lake Ontario. Onondaga Lake is ecologically sensitive, supporting diverse fish populations and migratory birds. Historically impacted by industrial and municipal pollution, the lake has undergone significant cleanup, and the plant's advanced treatment helps maintain improved water quality and ecosystem health.
Frequently asked questions
The plant is located at 650 Hiawatha Boulevard West in the Lakefront neighborhood of Syracuse, New York, on the shores of Onondaga Lake.
The plant serves approximately 270,398 people in the Syracuse metropolitan area and Onondaga County.
The plant discharges treated effluent into Onondaga Lake, which flows into the Seneca River, then the Oswego River, and ultimately into Lake Ontario.
As a large municipal treatment plant, it operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality in Onondaga Lake and downstream waters.
Plants of this size in New York typically provide at least secondary treatment, and many incorporate advanced nutrient removal to meet stringent limits for phosphorus and nitrogen, especially when discharging to sensitive water bodies like Onondaga Lake.
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