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Koch Nitrogen Company, LLC

Nitrogenous Fertilizers, Marshalltown, Iowa. NPDES permit IA0075591 expired Sep 5, 2005; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A quarterly (2 values), outfall 002 form A quarterly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 8 reports late

Limits in force (4)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002

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

Same industry: the 57 Chemicals and Allied Products permits in Iowa.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0075591 · MCP: https://passage-data.com/mcp