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Ox Paperboard Illinois, LLC

Paperboard Mills, Pekin, Illinois. NPDES permit IL0037729, in force until Aug 31, 2031. No reports in EPA's file for the last 12 months. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 25 days after each period: outfall 001 form 0 monthly (2 values), outfall A01 form 0 monthly (6 values)
Last report on file: None in EPA's file for the last 12 months; that may be EPA's gap, not the facility's

Limits in force (8)

Parameter	Statistic	Limit	Months	Outfall
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
pH	monthly minimum	≥ 6.5 SU	all year	A01
pH	monthly maximum	≤ 9 SU	all year	A01
Solids, total suspended	30-day average	≤ 15 mg/L	all year	A01
Solids, total suspended	daily maximum	≤ 30 mg/L	all year	A01
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	A01
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	A01

How strict are these limits?

pH, monthly minimum at least 6.5 SU — stricter than 38% of 286 other minor industrial and other permits in Illinois; 61% have the same limit
Solids, total suspended, 30-day average 15 mg/L — stricter than 37% of 259 other minor industrial and other permits in Illinois; 48% have the same limit
Solids, total suspended, daily maximum 30 mg/L — stricter than 20% of 508 other minor industrial and other permits in Illinois; 24% have the same limit

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0037729 · MCP: https://passage-data.com/mcp