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Blast Furnaces And Steel Mills, major discharger, Warren, Ohio. NPDES permit OH0011274, in force until Jun 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 014 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 014 |
| pH | daily minimum | ≥ 6.5 SU | all year | 014 |
| pH | daily maximum | ≤ 9 SU | all year | 014 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 014 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 014 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 014 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 014 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 014 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 014 |
| Iron, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Iron, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Zinc, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Lead, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Lead, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Copper, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Copper, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 014 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 014 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 014 |
| Mercury, total low level | monthly average | report only (ng/L) | Mar, Jun, Sep, Dec | 014 |
| Mercury, total low level | daily maximum | report only (ng/L) | Mar, Jun, Sep, Dec | 014 |
| Cyanide, free available | monthly average | report only (ug/L) | all year | 014 |
| Cyanide, free available | daily maximum | report only (ug/L) | all year | 014 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 014 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 014 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 014 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 014 |
| pH | daily minimum | ≥ 6.5 SU | all year | 015 |
| pH | daily maximum | ≤ 9 SU | all year | 015 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 015 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 015 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 015 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 015 |
| Zinc, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 015 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 015 |
| Aluminum, total recoverable | monthly average | report only (ug/L) | Mar, Jun, Sep, Dec | 015 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec | 015 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 015 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 015 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 113 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 113 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 113 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 113 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 113 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 113 |
| pH | daily minimum | ≥ 6.5 SU | all year | 213 |
| pH | daily maximum | ≤ 9 SU | all year | 213 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 213 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 213 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 213 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 213 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 213 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 213 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 804 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 804 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 804 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 804 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 56 Primary Metal Industries permits in Ohio.
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On EPA ECHO: Facility report · DMR history
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