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, click here

Water Regulating and Discharges

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  • Industrial Wastewater Discharge Permit Compliance Information

    How to maintain compliance with your individual discharge permit; a summary of key information and requirements that apply to your permit.

  • Common Violations and How To Avoid Them

    Common industrial wastewater violations and how to avoid them.

  • Industrial Waste Water Contact Information

  • What To Expect From An Inspection

    The Department of Energy and Environmental Protection (DEEP) conducts inspections at permitted facilities throughout the state. Under state law inspectors have the authority to enter your facility at reasonable times to evaluate compliance with your permit and the Water Discharge Permit Regulations of the State of Connecticut.

  • Notification Requirements

    Information regarding when it is necessary to contact the DEEP with permit related issues under CGS Section 22a-430.

  • General Pretreatment Permit for Significant Industrial User, Dewatering, and Remediation Discharges (SIU GP)

  • Stormwater Manual

    The Connecticut Stormwater Quality Manual provides guidance on the measures necessary to protect the waters of the State of Connecticut from the adverse impacts of post-construction stormwater runoff.

  • Construction Stormwater General Permit

    The General Permit for the Discharge of Stormwater and Dewatering Wastewaters from Construction Activities ("Construction Stormwater General Permit") requires developers and builders to implement a Stormwater Pollution Control Plan to prevent the movement of sediments off construction sites into nearby water bodies and to address the impacts of stormwater discharges from a project after construction is complete.

  • Industrial GP Compliance Assistance

  • Industrial Wastewater

    The Department of Energy and Environmental Protection (DEEP) regulates the discharge of industrial wastewater to the ground water, surface water, and to sewage treatment plants through permitting programs. Discharge limits and requirements for treatment, monitoring and reporting, designed to protect the waters of the state from pollution, are specified in all permits.

  • Notice of Violation

    If you receive a Notice of Violation, be sure to read the Notice of Violation, make sure you understand its content, and contact the Water Permitting and Enforcement Division if you have any questions.

  • Sample Collection and Documentation

    If you are required to submit DMRs to comply with an Individual NPDES or Pretreatment permit, you are eligible to file electronically.

  • Industrial Stormwater GP

    The General Permit for the Discharge of Stormwater Associated with Industrial Activity (“Industrial Stormwater General Permit”) regulates industrial facilities with point source discharges that are engaged in specific activities listed in the permit.

  • Charitable Car Wash Guidance

    This guidance was developed for landowners, industrial, commercial and residential property managers; charities, religious, civic and fraternal groups and organizations, public and private schools and educational institutions, municipal officials, and other interested parties regarding fund raising vehicle wash events and effective water pollution control.

  • NetDMR in Connecticut

    NetDMR is a freely available Web-based tool that allows permittees to electronically sign and submit their discharge monitoring reports (DMRs) or stormwater monitoring reports (SMRs) to EPA via a secure internet connection. NetDMR is designed to improve data quality, save paper, and provide cost savings for permittees and regulators.

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