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.  

The CT Sewage Right-to-Know Annual Report has been posted on the new CT Sewage Right-to-Know page.  

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. The data from the previous system will still be available at Archived Bypass / Combined Sewer Overflow (CSO) Information.

Bypass Reporting for Municipalities Information for wastewater treatment plant and collection system operators required to report sewage bypasses and CSOs.

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..

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

Fats, Oils and Grease (FOG) Model Program

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

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

Phosphorus Reduction Strategy for Inland Non-Tidal Waters

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 June 16, 2022