Municipal storm water permits

Bioswales capture runoff for infiltration (DNR photo)

More than two hundred municipalities in Wisconsin that include cities, villages, towns and counties within urbanized areas are required to have Municipal Separate Storm Sewer System (MS4) permits under NR 216, Wis. Adm. Code [exit DNR]. Use the links below to find out who is affected, how municipalities comply with permit requirements, and technical assistance documents. Learn more about storm water runoff.

• Permit overview
  Municipal permit program information
• WI–S050075–2 MS4 Permittees
  Download 2016 Annual Report Form under MS4 General Permit No. WI–S050075–2 [PDF]
  
• WI–S050181–1 MS4 Permittees
  Download 2016 Annual Report Form under MS4 General Permit No. WI–S050181–1 [PDF]
  
• Find permit information
  Look up municipal permittees
• Order publications/technical guidance
  Obtain technical guidance on storm water management planning and practices, and find guidance on grass swales and rain gardens
• Presentations
  View presentations from past workshops on municipal storm water management
• Standards/Models
  Find information on technical standards for management practices, SLAMM model, P8 Model, MS4 modeling guidance and West Nile Virus concerns with storm water management
• Grants
  Learn about grants to municipalities for planning and constructing storm water projects and download application materials
• Who’s Pond is it Anyway?
• DNR storm water contacts