Connecticut Department of Energy & Environmental Protection

General Pretreatment Permit for SIU, Dewatering and Remediation Discharges-11/12/2025

Notice of General Permit Reissuance for the General Pretreatment Permit for Significant Industrial User, Dewatering, and Remediation Discharges

Permit No. CTSIU0000 and CTDRW0000

The Department of Energy and Environmental Protection (“DEEP”) hereby gives notice of the reissuance of the General Pretreatment Permit for Significant Industrial User, Dewatering, and Remediation Discharges (“SIU GP”) on October 29, 2025, becoming effective on December 1, 2025, and expiring on October 28, 2030.

The general permit, fact sheet, and response to comments are available on the DEEP website at
 General Pretreatment Permit for Significant Industrial User, Dewatering, and Remediation Discharges.

DEEP has launched new webpages designed to help the regulated community navigate industrial pretreatment permitting requirements and maintain compliance.

Information can be found on the DEEP website: Pretreatment Program

Questions regarding the SIU GP may be directed to the Water Permitting & Enforcement Division Pretreatment Program at DEEP.Pretreatment@ct.gov.

/s/Audra Dickson
Director
Water Permitting and Enforcement Division
Bureau of Materials Management and Compliance Assurance

Published in the Hartford Courant, New Haven Register, Connecticut Post, New London Day, Waterbury Republican-American and The Chronicle on November 12, 2025.