A second Milwaukee-area discharger now flagged for permit violations

August 19, 2026Lake Michigan Lacustrine Clay Plain

The Schmitz Ready Mix facility in Milwaukee, located roughly 15 kilometers inland from the lake plain, is now listed by EPA in significant non-compliance with its Clean Water Act discharge permit. The facility exceeded at least one monthly average pollutant limit; the compliance record doesn't specify which pollutant or by how much, only that the exceedance is on the books and the case remains open.

This is a distinct matter from the combined-sewer overflow violations at the Milwaukee Metropolitan Sewerage District reported here in July. The two permit holders aren't connected findings, just separate dischargers drawing regulatory scrutiny in the same watershed within a single season, which says more about the intensity of oversight on this stretch of the Southeastern Wisconsin Till Plains watershed than about any single facility.

For scale, EPA's most recent impaired-waters assessment covering Bradford Beach, Atwater Beach, Milwaukee Harbor, and dozens of other area waterbodies currently lists all of them as not impaired, though many carry data gaps for some designated uses. That assessment predates this violation and doesn't account for it, so it can't be read as evidence one way or the other about conditions near the Schmitz outfall specifically. What's on record is simple: a permitted discharger exceeded its limit, and the question of what that means downstream, and for how long, remains open.

Data from EPA ATTAINS (303(d) impaired waters) and EPA ECHO

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