Trainings related to Municipal Stormwater (MS4) 

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MCM 3: Outfall Inspections
Permittees with NPDES Municipal Separate Storm Sewer System (MS4) permit coverage are required to conduct screening of their regulated MS4 outfalls as part of Minimum Control Measure 3 (MCM3), Illicit Discharge Detection and Elimination. This course was developed to provide learners with step-by-step guidance on how to conduct dry weather screenings of MS4 outfalls to evaluate for the presence of illicit discharges.
Draft PAG-13 General Permit for Stormwater Discharges from Small MS4s

The availability of the draft PAG-13 General Permit for public comment was announced in the January 18, 2025 edition of the Pennsylvania Bulletin ([55 Pa.B. 601]).  A 60-day comment period was being provided for the submission of written comments on the draft PAG-13 General Permit and associated documents.  This course will provide a brief overview of the changes proposed for the PAG-13 and instructions for submitting comments. The comment period is now closed. 

Basic Stormwater BMP Inspection and Maintenance

This course was developed to allow County Conservation Districts share their expertise on Stormwater BMP inspection and maintenance through short instructional videos. In each video, conservation district staff will explain how a particular BMP type works, the maintenance required to keep the BMP operational, and common issues that may be encountered when inspecting BMPs.

Disclaimer: The educational material included within this course is not intended to serve as regulatory guidance. MS4 permittees seeking regulatory guidance should reference their MS4 NPDES permit and/or PADEP’s Municipal Stormwater website.

Completing the PRP/TMDL Plan Final Report

This course will review how to complete a PRP or TMDL Plan Final Report using DEP’s PRP/TMDL Plan Final Report template (3800-FM-BCW0014).

After completing this course, learners will understand when their PRP/TMDL Plan Final Report needs to be submitted and the information and attachments that need to be included in the PRP/TMDL Plan Final Report for it to be considered complete.


MS4 eReporting User Guide

Welcome to the web-based training for the electronic reporting of MS4 Annual Status Reports through the GreenPort system. This training is intended to supplement the MS4 Annual eReporting User Guide. This course includes four training modules. These modules will introduce users to the eReporting application, provide guidance on the completion of electronic annual reports, and review the regulatory review process for submitted reports.  

Use of the MS4 eReporting application is voluntary for 2025, but it is being encouraged because the transition to electronic reporting is anticipated to become mandatory for all MS4 permittees in the next permit term.  

Pennsylvania Spring 2021 MS4 Forum

During the spring of 2021, EPA and PADEP hosted a series of MS4 Forums for MS4 permittees located within the Chesapeake Bay Watershed. The intent of the MS4 Forums was to provide an opportunity for municipalities with MS4 permits to discuss their stormwater management programs and share experiences and lessons learned. 


This module contains the recorded presentations from the 2021 MS4 Forums. Topics covered include, minimum control measures (MCMs), stormwater financing, Pollutant Reduction Plans (PRPs), BMP maintenance, and BMP case studies. 

Pollutant Reduction Plan Mapping Basics

This web-based training will assist MS4 permittees with developing mapping for their Pollutant Reduction Plans.

Stormwater Basin Retrofitting

Produced by the Westmoreland Conservation District, this two-part video, discusses the design, assessment, retrofitting, and maintenance of stormwater basins.

Stream Restoration for MS4 Pollutant Load Reduction Credit

This course will review how to use the MS4 Stream Restoration Eligibility Evaluation and Crediting Review Checklists. MS4 permittees implementing stream restoration projects for MS4 credit are encouraged to review these checklists and become familiar with the level of documentation that DEP expects to see when stream restoration projects are submitted to DEP for review.

Urban Stormwater Basics

This course was developed by Penn State Extension as an educational tool for employees of municipalities regulated by a MS4 NPDES permit. The learning modules included in this course will introduce the learner to the basic stormwater concepts necessary to understand how urban stormwater is managed and regulated in Pennsylvania and the role all municipal employees play in helping with that effort.

The educational material included within this course is not intended to serve as regulatory guidance. MS4 permittees seeking regulatory guidance should reference their MS4 NPDES permit and/or PADEP’s Municipal Stormwater website.