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MS4 Annual Report Deadlines, Compliance Tips, and Funding Opportunities

MS4 Annual Report Deadlines, Compliance Tips, and Funding Opportunities

It’s February in Wisconsin, and you know what that means! ‘Tis the season for polar vortexes, snow blowers, and MS4 Annual Reports. All permittees must submit their 2020 Municipal Separate Storm Sewer System (MS4) Annual Report to the Wisconsin Department of Natural Resources (WDNR) by March 31, 2021 .