Point source stormwater discharges from certain industrial activities to navigable waters are unlawful unless they are authorized by a National Pollutant Discharge Elimination System (NPDES) permit or by a state permit program. Facilities must be issued an individual New York's State Pollution Discharge Elimination System (SPDES) permit, obtain coverage under the Multi-Sector General Permit for Stormwater Discharges Associated with Industrial Activity (MSGP), or provide certification to DEC that industrial activities are not exposed to stormwater. This layer contains data for MSGP facilities.

Service layer is updated quarterly, last updated 12/2023.

For more information please refer to https://www.dec.ny.gov/chemical/9009.html

1. The NYS DEC asks to be credited in derived products. 2. Secondary distribution of the data is not allowed. 3. Any documentation provided is an integral part of the data set. Failure to use the documentation in conjunction with the digital data constitutes a misuse of the data. 4. Although every effort has been made to ensure the accuracy of information, errors may be reflected in the data supplied. The user must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions.