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Cargill Incorporated

Chemical Preparations, major discharger, St. Clair, Michigan. NPDES permit MI0001031 expired Oct 1, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (23 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 12 required values missing, 3 of 12 reports late

Limits in force (23)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmaximum monthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitmaximum monthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Conductivityinstantaneous maximum≤ 25000 umho/cmall year
Conductivitydaily geometric mean≤ 12000 umho/cmall year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Flow, in conduit or thru treatment plantmaximum monthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmaximum monthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Conductivity Excursionsdaily maximum≤ 4 occur/dall year
Conductivity Excursionsdaily maximum≤ 1 occur/dall year
Mercury, total [as Hg]monthly averagereport only (ng/L)all year
Mercury, total [as Hg]daily maximumreport only (ng/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Mercury, total [as Hg]daily maximumreport only (lb/d)all year
Mercury, total [as Hg]12-month average≤ 3 ng/Lall year
Mercury, total [as Hg]12-month average≤ .0003 lb/dall year
Day - max excursion time [min]daily maximum≤ 15 minall year
Day - max excursion time [min]daily maximum≤ 5 minall year
Outfall observation,visual, y/n responsemonthly totalreport only (N=0;Y=1)all year

How strict are these limits?

Cited limits by parameter: Michigan's rules and the federal ones.

Same industry: the 13 Chemicals and Allied Products permits in Michigan.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0001031 · MCP: https://passage-data.com/mcp