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Steel Foundries, major discharger, Birmingham, Alabama. NPDES permit AL0029378 expired Jun 30, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 668 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1157 lb/d | all year | 001 |
| Oil & Grease | monthly average | ≤ 202 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 323 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | ≤ 5.93 lb/d | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 7.98 lb/d | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ 3 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year | 001 |
| Lead, total [as Pb] | monthly average | ≤ 4.26 lb/d | all year | 001 |
| Lead, total [as Pb] | daily maximum | ≤ 7.27 lb/d | all year | 001 |
| Manganese, total [as Mn] | monthly average | ≤ 2 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 4 mg/L | all year | 001 |
| Zinc, total [as Zn] | monthly average | ≤ 18.64 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 28.9 lb/d | all year | 001 |
| Zinc, total recoverable | monthly average | ≤ .15 mg/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ .29 mg/L | all year | 001 |
| Lead, total recoverable | monthly average | ≤ .029 mg/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ .533 mg/L | all year | 001 |
| Copper, total recoverable | monthly average | ≤ .124 mg/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ .133 mg/L | all year | 001 |
| Phenols | monthly average | ≤ 2.55 lb/d | all year | 001 |
| Phenols | daily maximum | ≤ 3.39 lb/d | all year | 001 |
| 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 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 0 pass=0;fail=1 | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| pH | daily minimum | report only (SU) | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 002 |
| Phenols | daily maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| pH | daily minimum | report only (SU) | all year | 005 |
| pH | daily maximum | report only (SU) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Phenols | daily maximum | report only (mg/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| pH | daily minimum | report only (SU) | all year | 010 |
| pH | daily maximum | report only (SU) | all year | 010 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 010 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 010 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 010 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 010 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 010 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 010 |
| Phenols | daily maximum | report only (mg/L) | all year | 010 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 010 |
| pH | daily minimum | report only (SU) | all year | 012 |
| pH | daily maximum | report only (SU) | all year | 012 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 012 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 012 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 012 |
| Zinc, total recoverable | daily maximum | report only (mg/L) | all year | 012 |
| Lead, total recoverable | daily maximum | report only (mg/L) | all year | 012 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 012 |
| Phenols | daily maximum | report only (mg/L) | all year | 012 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 012 |
Cited limits by parameter: Alabama's rules and the federal ones.
Same industry: the 23 Primary Metal Industries permits in Alabama.
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