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Deco Products Co.

Nonferrous Foundries, Decorah, Iowa. NPDES permit IA0003794 expired May 31, 2012; 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 003 form A monthly (3 values), outfall 004 form A monthly (3 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 2 of 24 reports late

Limits in force (6)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily maximum	≤ 68 deg F	all year	003
pH	daily minimum	≥ 6 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Temperature, water deg. fahrenheit	daily maximum	≤ 68 deg F	all year	004
pH	daily minimum	≥ 6 SU	all year	004
pH	daily maximum	≤ 9 SU	all year	004

How strict are these limits?

Temperature, water deg. fahrenheit, daily maximum 68 deg F — stricter than 100% of 25 other minor industrial and other permits in Iowa

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

Same industry: the 7 Primary Metal Industries 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/IA0003794 · MCP: https://passage-data.com/mcp