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Sanitary District outlines MS4 stormwater work, permit timeline and local ordinance updates
Summary
Al Wallace of the Sanitary District presented Michigan City Common Council with the annual MS4 (municipal separate storm sewer) update, outlining inspections, ordinance changes, GIS/work-order tracking plans and an October IDEM audit.
Al Wallace, representing the Sanitary District of Michigan City, gave the Common Council an update on the city’s MS4 (municipal separate storm sewer) program on May 6, 2025, including inspection progress, an upcoming IDEM permit reissuance and planned local ordinance updates.
Wallace said the MS4 program exists to “manage our stormwater discharges, in order to protect public health, existing water uses, and aquatic life,” and summarized the program’s six minimum control measures required under the IDEM MS4 general permit. He told the council the permit in effect was issued in February 2021 and that IDEM is expected to reissue an updated permit in February 2026.
The presentation described recent and planned work: about 40 outfalls had been inspected during the first three permit years, with…
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