Municipal storm water permits

Important information concerning the DNR’s MS4 General Permits

On October 27, 2014, 33 municipalities were notified to apply for coverage under the MS4 General Permit No. S050181-1.

» View received Notice of Intent applications


Webinar recording

On April 14, 2015, the DNR presented a webinar on the guidance for implementation of Total Maximum Daily Loads (TMDLs) through MS4 permits [PDF]. A recording of the webinar and a copy of the program slides are available at the UW-Extension Natural Resources Webinars webpage [exit DNR].

Storm water pond

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.

Last revised: Tuesday April 21 2015