For more information about the MS4 program, contact DEQ district staff.

MS4 Permits

The MS4 program requires a permit to discharge from an MS4 located in an urbanized area with a qualifying population.  In Michigan, MS4 permittees may include cities, townships, villages, county agencies, universities, and school districts.  Most permittees are covered under a  general permit based on their stormwater management approach, either jurisdictionally-based or watershed-based.

Current MS4 General Permits (Effective 2003)

• Watershed Permit - MIG619000 
• Jurisdictional Permit - MIS040000 

Permittess may request a modification or termination of permit coverage.  The MS4 Permit Modification and Termination Request form is in pdf format.  It must be printed, completed manually, signed, and submitted as a hard copy for DEQ review to the address located on the form.

• Request for Permit Fee Appeal 

For permittees seeking additional information regarding the withdrawl of the 2008 MS4 general permits, a frequently asked questions document has been developed.

• 2008 MS4 General Permits Frequently Asked Questions 

MS4 Compliance Assistance Documents

The following Compliance Assistance Documents are available to assist with the 2003 MS4 general permit requirements.

• Catch Basin Cleaning Activities
• Potential Adverse Impacts of Alternative Deicers 
• Wastewater Discharge from Mobile Power Washing 

Compliance Assistance Documents were also developed to assist permittees covered by the 2008 MS4 general permits.  The 2008 MS4 general permits were subsequently withdrawn.  As such, the Compliance Assistance Documents may not meet all the requirements of the 2003 MS4 general permits.  The documents are intended for guidance only and are available here.  If you have questions about these documents and how they relate to compliance with an MS4 permit, please contact DEQ district staff.

Storm Water Control Resources

• BMP Guidebook for Michigan Watersheds 
• Low Impact Development Manual for Michigan 
• Information and Education Publications, Including Be Stormwater Savvy 
• Hydrologic Impacts Due to Development 
• Part 5 Rules - Spillage of Oil and Polluting Materials 
• Urban BMP Performance Tool 
• Pollution Prevention and Municipal BMP Maintenance Resources 

For quick access to this site go to www.michigan.gov/deqstormwater