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Superior Forge & Steel Corporation

Blast Furnaces And Steel Mills, Lima, Ohio. NPDES permit OH0095346, in force until May 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (13 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (27)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Zinc, total recoverabledaily maximum≤ 284 ug/Lall year001
Aluminum, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Aluminum, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverabledaily maximum≤ 448 ug/Lall year001
Copper, total recoverabledaily maximum≤ 35 ug/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Duration of dischargemonthly averagereport only (hr)all year001
Duration of dischargedaily maximumreport only (hr)all year001
pHdaily minimumreport only (SU)all year601
pHdaily maximumreport only (SU)all year601
Solids, total suspendedmonthly averagereport only (mg/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year601
Zinc, total recoverablemonthly averagereport only (ug/L)all year601
Zinc, total recoverabledaily maximumreport only (ug/L)all year601
Lead, total recoverablemonthly averagereport only (ug/L)all year601
Lead, total recoverabledaily maximumreport only (ug/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year602
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year602

How strict are these limits?

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

Same industry: the 56 Primary Metal Industries permits in Ohio.

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/OH0095346 · MCP: https://passage-data.com/mcp