General Permit for Discharge of Stormwater Commercial Activity 10/14/25

Notice of General Permit Reissuance National Pollutant Discharge Elimination System General Permit for Discharge of Stormwater Associated with Commercial Activity
Permit No. CTR010000

The Department of Energy & Environmental Protection (DEEP) hereby gives notice of the reissuance of the General Permit for the Discharge of Stormwater Associated with Commercial Activity (“Commercial Stormwater General Permit”) on October 1, 2025, becoming effective December 1, 2025, and expiring September 30, 2030.

The Commercial Stormwater General Permit and fact sheet are available on the DEEP website at:
https://portal.ct.gov/deep/water-regulating-and-discharges/stormwater/commercial-stormwater 

DEEP has transitioned to an online noncompliance reporting platform for permittees to report instances of noncompliance for activities authorized under the general permit and recently launched a new online public platform for persons to report water quality complaints and concerns related to water pollution.

Both online platforms are accessible on the DEEP website:
https://portal.ct.gov/deep/water-regulating-and-discharges/stormwater/stormwater-management..

Questions regarding the Commercial Stormwater General Permit may be directed to the Water Permitting & Enforcement Division Stormwater Program at DEEP.StormwaterCommercial@ct.gov.

/s/Audra Dickson, Director
Water Permitting and Enforcement Division
Materials Management and Compliance Assistance

Published in the Hartford Courant, Waterbury Republican-American, New Haven Register, New London Day, Connecticut Post and The Chronicle on October 14, 2025.