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Trenton MI LLC

Industrial Inorganic Chemicals, Trenton, Michigan. NPDES permit MI0000558, in force until Oct 1, 2027. 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 (6 values)
Renewal application due: Apr 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (6)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	daily minimum	≥ 3 mg/L	all year
Phosphorus, total [as P]	monthly average	≤ 1 mg/L	all year
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year
Chloride [as Cl]	daily maximum	report only (mg/L)	all year
Sulfate, total [as SO4]	daily maximum	report only (mg/L)	all year
Outfall observation,visual, y/n response	value	report only (N=0;Y=1)	all year

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0000558 · MCP: https://passage-data.com/mcp