Connecticut Department of Energy & Environmental Protection

DEEP headquarters at 79 Elm Street in Hartford has partially re-opened to staff and members of the public as of Tuesday, February 3. The DEEP records room has re-opened. The DEEP Central Permit Processing Unit (CPPU) will be open to the public starting on Wednesday, Feb. 4. For updates, please click here

Municipal Wastewater

The Municipal Wastewater section handles all aspects of interactions between municipalities and DEEP regarding wastewater treatment.  From planning the needed infrastructure, through design and construction oversight, to operation, maintenance, and permitting, the Municipal Wastewater section provides guidance, support, and regulatory efforts related to wastewater at the municipal level.  

* Clean Water Fund Information on the Clean Water Fund Program including priority lists and DEEP memos 

* Combined Sewer Overflows (CSOs): Background information about CSOs in the State for the public

 

* CT Sewage Right-to-Know page - contains the CT Sewage Right-to-Know Annual Reports.  

* CT DEEP Performance Dashboard contains "real-time" sanitary sewer and CSO bypass information.  Check it out before recreating in the waters of the state.  The map has a query function with the ability to export information.

 

* Electronic Reporting for Wastewater Treatment Facilities and Satellite Collection Systems

* Environmental Impact Evaluations (EIE) for and Public Comments on Municipal Wastewater Projects and Permits 

* Fats, Oils and Grease (FOG) Model Program

* Municipal Wastewater Office Hours and Other Presentations

* Nitrogen Control Program for Long Island Sound

* Operator Certification for Municipal Wastewater Treatment Facilities: Includes exam information, exam or reciprocity application and the Chief, Shift, Process Control Operator, and Direct Responsible Charge Verification Form.

* Permit Application for Wastewater Discharges from Domestic Sewage Treatment Works

* Phosphorus Reduction Strategy for Inland Non-Tidal Waters

* PFAS / Per- and polyfluoroalkyl substances Includes the WPCF PFAS Report, EPA Monitoring Guidance & DEEP’s next steps

* Publications & Guidance

* Review of Wastewater Infrastructure Plans and Specifications Information on what needs to be reviewed by DEEP

* Significant Non-Compliance (SNC) National Compliance Initiative (NCI) Advisory:  EPA has released the general SNC NCI Compliance Advisory. The goal of this NCI is to ensure “all NPDES permittees—not just industrial contributors—are complying with their permits.” NPDES permittees, regardless of facility size or type, will see an increase by EPA, and its state and tribal partners, in identifying and addressing SNC violations using compliance tools, including enforcement. The SNC NCI aims to cut significant non-compliance by 50% and to also ensure that the most serious SNC violations are timely and appropriately addressed. States, interstates, territories, industry groups, municipal groups and other entities that communicate regularly with NPDES permittees are encouraged to circulate this Compliance Advisory.

* Storm Preparation Resources for Municipal Wastewater Facilities

 

DEEP Municipal Wastewater Updates

Join the DEEP Municipal Wastewater Updates Newsletter to receive notification of program updates, web postings and other information regarding the Municipal Wastewater Program. Once you click on the link, fill out the form and choose DEEP Municipal Wastewater to keep up to date!

For additional information regarding the Municipal Wastewater Program, please contact the Municipal Wastewater section by e-mail or call us at 860-424-3704.

Content last updated on January 15, 2026