The MPCA is in the initial stages of reissuing the MS4 General Permit. At this time, the MPCA anticipates the MS4 General Permit to be reissued in early 2019 (note: this is subject to change). Although the current MS4 General Permit expires on July 31, 2018, those covered under the current permit will be able to operate under it until the MPCA reissues the new permit. The new permit will be subject to the NPDES Stormwater Final MS4 General Permit Remand Rule, which emphasizes permit requirements to be “clear, specific, and measurable.”

Draft MS4 General Permit language will be posted here when it becomes available for your early feedback.