How to Read an Expiring MS4 Permit | CWT Training Academy
MS4 Permit Resource Guide

Your MS4 Permit Is Expiring. Here’s How to Understand What Comes Next.

A plain-language guide for municipalities, stormwater program managers, public works teams, and local leaders who need to understand what a new or expiring MS4 permit means for their program.

Start the Permit Review See How CWT Can Help
Understand the timeline Know whether you are in draft review, final permit release, or implementation.
Identify what changed Focus on new requirements instead of rereading the entire permit.
Build a next-step plan Turn permit language into training, outreach, tracking, and program actions.
How to use this guide

Do not try to read your permit like a book.

MS4 permits are technical documents, but your review process can be practical. Start with timeline, responsibilities, training, outreach, reporting, and program updates. Then translate what you find into a work plan.

1

Identify where you are in the permit timeline.

Before reviewing requirements, determine whether the permit is active, expiring, in draft form, recently finalized, newly effective, or administratively extended.

  • When does the current permit expire?
  • Has a draft permit been released?
  • When does the new permit become effective?
  • Are there phased deadlines inside the permit?
Why it matters: A draft permit gives you time to review, budget, and ask questions. A newly effective permit means it is time to implement and document.
2

Find the sections that apply to your program.

Break the permit into program areas instead of treating it as one large document. Different departments may own different requirements.

  • Stormwater Management Program requirements
  • Public Education and Outreach
  • Illicit Discharge Detection and Elimination
  • Construction and post-construction stormwater controls
  • Pollution prevention and good housekeeping
  • Reporting, recordkeeping, mapping, and training
3

Compare the old permit to the new permit.

The most important question is not only “What does the permit say?” It is “What changed from the last permit?”

  • Look for new definitions, deadlines, and reporting requirements.
  • Check for expanded training or documentation expectations.
  • Watch for changes to inspection frequency, outreach audiences, or impaired waters requirements.
Recommended method: Create a comparison table with old requirement, new requirement, what changed, owner, and action needed.
4

Look for training requirements.

Many MS4 permits require staff training, but the wording may vary. Search for terms like training, qualified personnel, responsible staff, contractors, inspectors, maintenance staff, and municipal employees.

  • Who needs training?
  • What topics must be covered?
  • How often must training happen?
  • Does training need to be documented?
  • Are contractors included?
  • Is a named certification required?
5

Review public education and outreach requirements.

Public outreach requirements may change by audience, topic, frequency, documentation, or effectiveness tracking.

  • Does the permit identify required audiences?
  • Does it name required topics or priority pollutants?
  • Are measurable goals or effectiveness tracking required?
  • Are schools, youth education, businesses, contractors, or residents specifically mentioned?
6

Know what you must prove.

A requirement is only useful if you can document that it was completed. Review what records must be maintained and what must be submitted.

  • Training records and certificates
  • Inspection and maintenance logs
  • Public outreach documentation
  • IDDE investigations and complaints
  • Construction and post-construction inspection records
  • Annual reporting and program evaluation
7

Identify internal program updates.

A new permit may require updates to internal documents, workflows, forms, schedules, and staff responsibilities.

  • Stormwater Management Program document
  • Standard operating procedures
  • Inspection forms and maintenance checklists
  • Outreach plans and annual reporting templates
  • Training plans, contractor expectations, and tracking systems
8

Decide whether state-specific support is needed.

Not every permit change requires a custom course or state-specific program. State-specific content is most useful when there is a clear driver.

  • The permit names a specific certification or required training.
  • The state uses unique terminology, forms, deadlines, or reporting systems.
  • Regulators are encouraging specific education.
  • Municipalities are asking similar questions.
  • The permit creates new outreach, reporting, or implementation expectations.
9

Turn the permit into an action plan.

Once you understand the permit, translate it into a practical work plan with owners, deadlines, support needs, and documentation requirements.

  • Permit section and requirement summary
  • Responsible department or person
  • Deadline or implementation date
  • Training, outreach, reporting, or program support need
  • Status and next action
What municipalities usually discover

Most MS4 permit reviews point to a few common needs.

When a municipality reviews an expiring or newly issued permit, the findings usually fall into training, outreach, documentation, or program updates.

Staff training gaps

Teams may need updated training for IDDE, good housekeeping, inspections, maintenance, construction oversight, or annual staff refreshers.

Outreach updates

Public education requirements may call for new audiences, new topics, measurable goals, youth education, or stronger documentation.

Tracking needs

Training records, inspection logs, maintenance activities, outreach efforts, and annual reporting data may need a better system.

Simple MS4 permit review worksheet

Use this as a starting point when turning permit language into action items.

Permit Area What to Look For Who May Own It Potential Support Need
Training Required topics, frequency, staff roles, documentation, contractor requirements MS4 Manager, Public Works, HR, Supervisors On-demand training path, tracking, certificates
Public Outreach Target audiences, required topics, measurable goals, annual activities Outreach Coordinator, Communications, Public Works Campaigns, school materials, PUDLE Outreach tools
IDDE Reporting, response timelines, investigations, staff training, recordkeeping Public Works, Field Staff, Code Enforcement SOP review, staff training, tracking forms
Good Housekeeping Facility practices, maintenance activities, municipal operations, pollution prevention Maintenance Crews, Parks, Facilities, Fleet Staff training, checklists, documentation system
Reporting Annual report data, records, attachments, program evaluation MS4 Manager, Admin Staff, Consultants Reporting calendar, documentation tracker, support review
Why CWT is here to support

You do not have to translate the permit alone.

CWT Training Academy helps stormwater teams turn complex permit language into practical next steps. We support municipalities with training, outreach, program tools, documentation structure, and state-specific resources when the permit calls for them.

Training Pathways

On-demand stormwater learning, staff readiness resources, certificates, and trackable training records.

MS4 Program Support

Help reviewing permit changes, organizing responsibilities, identifying gaps, and building an implementation plan.

Public Outreach

PUDLE Outreach, Stormwater Defenders, community education, K–Career tools, and outreach campaign support.

Tracking & Reporting

Support for staff records, outreach documentation, annual reporting prep, and program tracking structure.

Need help with your MS4 permit?

Send us your state, permit type, and deadline. We’ll help identify the next step.

Whether you need a quick training path, a public outreach plan, a program review, or a broader support package, CWT can help you move from permit language to practical implementation.

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