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City receives MS4 annual update on stormwater compliance and public outreach

3126758 · April 25, 2025
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Summary

City engineer and public works director briefed the council on the city’s MS4 NPDES stormwater permit requirements and annual compliance activities including public outreach, construction site inspections, illicit discharge detection and street sweeping.

Crest Hill — City Engineer Ron Wiedemann and Public Works Director Julius Hansen briefed the council on the city’s annual Municipal Separate Storm Sewer System (MS4) obligations and the city’s ongoing compliance efforts under the NPDES program.

Wiedemann summarized the six core program elements required by the permit: public outreach and education; public involvement and participation; illicit discharge detection and elimination; construction site stormwater runoff control; post-construction stormwater management; and pollution prevention/good housekeeping for municipal operations. He said the city publishes outreach materials on its website and social media, inspects construction sites and major outfalls on a routine schedule, maintains a pretreatment program, and performs street sweeping and catch-basin maintenance to reduce pollutants conveyed to surface waters.

Wiedemann explained MS4 stands for Municipal Separate Storm Sewer System and that the permit stems from the Clean Water Act and the NPDES framework. He encouraged residents to report suspected illicit discharges to Public Works at (815) 741-5108 so staff can investigate.

No council action was required; the briefing was informational only.

Why it matters: MS4 compliance helps protect local water bodies and assures the city is meeting state and federal stormwater permit requirements.

Speakers quoted in this item include Ron Wiedemann, City Engineer, and Julius Hansen, Public Works Director.