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  2. National Pollutant Discharge Elimination System (NPDES)

Combined Sewer Overflows in the Great Lakes Basin-New York

<< CSO Homepage  <  CSOs in the Great Lakes Basin

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There are 16 NPDES permits for CSO discharges in the Great Lakes Basin in New York. The table below provides information about those permittees and, where available, links to their CSO website. The New York State Department of Environmental Conservation (DEC) also compiles historical sewage discharge data from its NY-Alert system in the Sewage Discharge Reports. These reports are available for download on the DEC's website, Sewage Pollution Right To Know. Concerned citizen can also sign up for Sewage Discharge Alerts at the NY-Alert website. 

Map of CSOs in New York that drain to the Great Lakes Basin

The following links exit the site.

Municipal Operator of CSONPDES Permit NumberGreat Lake Discharged ToWater Body Directly Discharged IntoWebsite
Auburn STPNY0021903Lake OntarioOwasco OutletAuburn website
Boonville WWTPNY0020494Lake OntarioMill CreekBoonville website
Buffalo Sewer AuthorityNY0028410Lake ErieNiagra River, Buffalo River, Scajaquada Creek, Black Rock Canal, Cazenovia CreekBuffalo website
Canastota WPCFNY0029807Lake OntarioCanastota CreekCanastota website
Dunkirk WWTPNY0027961Lake ErieLake ErieDunkirk website
Frank E. VanLare STP (Rochester)NY0028339Lake OntarioGenesee River, Irondequoit Bay 
Gouverneur STPNY0020117St. Lawrence SeawayOswegatchie RiverGouverneur website
Lockport WWTPNY0027057Lake OntarioBarge Canal and Eighteen Mile CreekLockport website
Massena WWTPNY0031194St. Lawrence SeawayGrasse and Raquette RiversMassena website
Medina WWTPNY0021873Lake OntarioBarge Canal and Oak Orchard Creek 
Niagara Falls WWTPNY0026336Lake ErieNiagara RiverNiagara Falls website
North Tonawanda WWTPNY0026280Lake OntarioNiagara RiverNorth Tonawanda website
Ogdensburg WWTPNY0029831St. Lawrence SeawaySt. Lawrence RiverOgdensburg website
OswegoNY0029106, 
NY0029114
Lake OntarioOswego RiverOswego website
Syracuse Metro WWTPNY0027081Lake OntarioHarbor BrookSyracuse website
Watertown WPCPNY0025984Lake OntarioBlack RiverWatertown website

EPA’s Enforcement and Compliance History Online (ECHO) database has additional information on NPDES discharges, including CSO discharges for some facilities.

National Pollutant Discharge Elimination System (NPDES)

  • About NPDES
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Contact Us About NPDES
Contact Us About NPDES to ask a question, provide feedback, or report a problem.
Last updated on August 29, 2025
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