Connecticut Department of Energy & Environmental Protection

UIC Compliance Assistance

Whether you're new to the UIC Program or looking to stay in compliance with your existing permit, this page provides the tools and guidance you need. From understanding your permit responsibilities to avoiding violations, we're here to support you every step of the way.

Use the links below to learn how to comply with your permit, what to expect during inspections, compliance assistance, and how we handle enforcement.

If you have questions, need help interpreting permit conditions, or want to make sure you're on the right track, go to the bottom of the page to contact DEEP for assistance.

Quick Links

Report a Water Pollution Concern

Complaints are reviewed continuously and prioritized based on environmental and public health risk.

Report a complaint about water pollution by clicking the link here: Report a complaint about water pollution.

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How to Comply with Your Permit

Once your facility is permitted, it's your responsibility to understand the requirements and stay in compliance. This protects your business, your workers, and the environment.

Here's what you need to know, and do, to remain in good standing.

1. Understand What You're Permitted to Discharge

Your permit outlines:

  • What types of wastewater you can discharge
  • Where you're allowed to discharge
  • Discharge limits for pollutants (such as TSS, pH, nutrients, organics, pathogens, etc.)
  • Any required pretreatment (e.g., pH neutralization, oil/water separation)

Tip: Keep a copy of your permit and registration materials handy, digital or printed.

2. Conduct Monitoring and Sampling

Most permittees are required to sample their wastewater periodically to ensure it meets permit limits. You need to follow approved sampling methods and frequencies use certified lab for analysis, and keep detailed records.

Tip: Set calendar reminders for sampling and reporting deadlines.

3. Submit Required Reports

Regular electronic reporting is a core compliance obligation. You may be required to submit Discharge Monitoring Reports (DMRs), compliance schedule reports, or other permit required reports. Missing or late reports can result in violations even if your discharges are within limits.

Discharge Monitoring Reports (DMRs)

DMRs must be submitted electronically through EPA's NetDMR system.

Visit the CT DEEP NetDMR Webpage to learn more about electronic submissions.

Submit Discharge Monitoring Reports (DMRs) through NetDMR

4. Maintain Your Pretreatment Equipment

If you use treatment systems (like pH adjustment, filters, or separators), you must operate and maintain equipment properly, keep maintenance logs, and respond promptly to malfunctions or alarms. Unmaintained systems are a top cause of permit violations.

5. Keep Accurate Records

You should maintain:

  • Permit documents
  • Sampling and lab results
  • Maintenance logs
  • Correspondence with DEEP
  • Training records for staff handling wastewater operations

These will be reviewed during inspections or audits and can be requested at any time.

6. Notify DEEP of Problems or Changes

You are required to notify the program if:

  • You have a spill, bypass, or violation
  • You plan to change your processes or chemicals
  • You are closing or relocating your discharge
  • There is a change in ownership or contact information

Prompt communication helps resolve issues and avoid penalties

As of December 1, 2023, notifications required under Regs. Conn. State Agencies Section 22a-430 must be submitted electronically

Click on this link to access the reporting application: Noncompliance Notification Form

Important: Online reporting does not replace the 24-hour Emergency Response Unit hotline: (860) 424-3338. Please see DEEP's Reporting Environmental Concerns and Problems Webpage for additional reporting guidance.

Quick Reference

Issue

Initial Notification

Follow-Up

Two times any Maximum Daily Limit

2 hours

5 days

Exceedance of any permit limit

24 hours

30 days

Monitoring equipment failure

2 hours

5 days

Treatment system bypass

2 hours

5 days

7. Contact DEEP for Help

We're here to support your compliance. Contact us for:

  • Clarification on permit conditions
  • Help with reporting or sampling
  • Guidance on changes to your operations

Compliance Assistance & Enforcement

The UIC Program helps permit holders to stay in compliance and takes enforcement actions when necessary to protect public health and water quality.

We offer:

  • Guidance documents and fact sheets
  • Technical assistance
  • Permit interpretation support
  • Sampling and reporting help

Inspection

As part of its oversight role, DEEP conducts inspections of permitted facilities to ensure compliance. Inspections help verify that facilities are operating in accordance with their permits and maintain proper wastewater treatment practices.

What to Expect During an Inspection

  • Review of your permit and discharge records
  • Examination of treatment systems and monitoring equipment
  • Evaluation of your sampling, reporting, and maintenance logs
  • Discussion of any operational changes or concerns

Inspections may be announced or unannounced and can be conducted by DEEP or in coordination with US EPA.

Our goal is to make inspections a collaborative opportunity to improve compliance and prevent future violations.

Enforcement

Facilities that fail to comply with the permit requirements, such as exceeding discharge limits or failing to submit reports, may be subject to:

  • Notices of Violations (NOVs)
  • Consent or Administrative Orders
  • Penalties, including monetary fines

Our goal is to support compliance first, and we work with facilities to resolve issues when possible.

Visit DEEP's Enforcement Webpage for more information.

Additional Resources

NetDMR Resources

Mapping Resources

Contact Us

Have a question or need help with your permit?

Email us at DEEP.UICPermitting@ct.gov

 

Content Last Updated: May 21, 2026