Stormwater Index

Regulatory History


Regulatory History of the Environmental Protection Agency Stormwater Program

The 1987 Amendments to the Clean Water Act required a phased approach to the National Polluntant Discharge Elimination System (NPDES) Stormwater Program. In New York State, the New York State Department of Environmental Conservation (NYSDEC) is responsible for administering the program as part of the State Pollutant Discharge Elimination System (SPDES).

Phase I

  • Instituted in 1990.

  • Required SPDES permit coverage for

    • Medium and Large Municipal Separate Storm Sewer Systems (MS4s) serving populations over 100,000.

    • Construction activities disturbing five acres or more

    • 10 Categories of industrial activities

Phase II

  • Signed in 1999.

  • Two new permits for stormwater discharges

    • MS4

    • Small Construction

  • Address Other Sources

    • Small Municipal Separate Storm Sewer Systems (MS4s) serving populations less than 50,000

    • Non-Traditional Municipal Separate Storm Sewer Systems (MS4s)(ex. County Highways, NYSDOT, Airports, Community Colleges, Prisons, etc.)

    • Construction Activity disturbing one acre or more


Note: There are no towns or villages in Cayuga County that are MS4s at this time. The City of Auburn is on the "Watch List" and may be added in 2008. Therefore the part of the Phase II regulations that concerns the towns and villages in Cayuga County is the Small Construction Program.


Stormwater Index

Page updated on 12/15/05