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Aluminum Sheet, Plate, And Foil, major discharger, Muscle Shoals, Alabama. NPDES permit AL0000035, in force until May 31, 2029. Last 12 months: over a limit once (last September 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| September 2026 | Oil & Grease, daily maximum | 42 | ≤ 15 mg/L | 180% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Cyanide, free available | daily maximum | report only (mg/L) | all year | 001 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 90 deg F | Jun–Sep | 004 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 90 deg F | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 004 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year | 004 |
| pH | daily minimum | report only (SU) | all year | 004 |
| pH | daily maximum | report only (SU) | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.4 mg/L | May–Nov | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | Jan, Feb, Mar, Apr, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.1 mg/L | May–Nov | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.65 mg/L | Jan, Feb, Mar, Apr, Dec | 004 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | Apr–Sep | 004 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | Apr–Sep | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Sep | 004 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 004 |
| Cyanide, free available | daily maximum | ≤ .022 mg/L | all year | 004 |
| Toxicity [acute], Ceriodaphnia dubia | monthly average | ≤ 0 pass=0;fail=1 | all year | 004 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | monthly average | ≤ 0 pass=0;fail=1 | all year | 004 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 004 |
| Flow, augmented water | daily minimum | ≥ 2 MGD | May–Nov | 004 |
| Flow, augmented water | daily minimum | ≥ 1.5 MGD | Jan, Feb, Mar, Apr, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 9 mg/L | Jan, Feb, Mar, Apr, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6 mg/L | May–Nov | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 13.5 mg/L | Jan, Feb, Mar, Apr, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 9 mg/L | May–Nov | 004 |
| pH range excursions, > 60 minutes | monthly maximum | ≤ 0 occur/mo | all year | 004 |
| pH range excursions, monthly total accum | monthly maximum | ≤ 446 min | all year | 004 |
| pH | daily minimum | report only (SU) | all year | 006 |
| pH | daily maximum | report only (SU) | all year | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Cyanide, free available | daily maximum | report only (mg/L) | all year | 006 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 006 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 006 |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year | 006 |
| pH | daily minimum | report only (SU) | all year | 007 |
| pH | daily maximum | report only (SU) | all year | 007 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 007 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 007 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 007 |
| Copper, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Cyanide, free available | monthly average | report only (mg/L) | all year | 007 |
| Cyanide, free available | daily maximum | ≤ .022 mg/L | all year | 007 |
| Mercury, total recoverable | daily maximum | report only (mg/L) | all year | 007 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 007 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 007 |
| Chromium, hexavalent [as Cr] | monthly average | report only (mg/L) | all year | 04A |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 04A |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 04A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 04A |
| pH | daily minimum | report only (SU) | all year | 04E |
| pH | daily maximum | report only (SU) | all year | 04E |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 04E |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 04E |
| Oil & Grease | monthly average | report only (lb/d) | all year | 04E |
| Oil & Grease | daily maximum | report only (lb/d) | all year | 04E |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 29.44 lb/d | all year | 04E |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 66.98 lb/d | all year | 04E |
| Lead, total [as Pb] | monthly average | ≤ .065 lb/d | all year | 04E |
| Lead, total [as Pb] | daily maximum | ≤ .14 lb/d | all year | 04E |
| Zinc, total [as Zn] | monthly average | ≤ .21 lb/d | all year | 04E |
| Zinc, total [as Zn] | daily maximum | ≤ .51 lb/d | all year | 04E |
| Aluminum, total [as Al] | monthly average | ≤ 1.36 lb/d | all year | 04E |
| Aluminum, total [as Al] | daily maximum | ≤ 3.07 lb/d | all year | 04E |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 04E |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 04E |
| pH | daily minimum | ≥ 6 SU | all year | 04F |
| pH | daily maximum | ≤ 9 SU | all year | 04F |
| Solids, total suspended | monthly average | ≤ 273.88 lb/d | all year | 04F |
| Solids, total suspended | daily maximum | ≤ 569.32 lb/d | all year | 04F |
| Oil & Grease | monthly average | ≤ 166.52 lb/d | all year | 04F |
| Oil & Grease | daily maximum | ≤ 277.67 lb/d | all year | 04F |
| Cyanide, total [as CN] | monthly average | ≤ .85 lb/d | all year | 04F |
| Cyanide, total [as CN] | daily maximum | ≤ 2.06 lb/d | all year | 04F |
| Chromium, total [as Cr] | monthly average | ≤ 1.27 lb/d | all year | 04F |
| Chromium, total [as Cr] | daily maximum | ≤ 3.11 lb/d | all year | 04F |
| Zinc, total [as Zn] | monthly average | ≤ 4.28 lb/d | all year | 04F |
| Zinc, total [as Zn] | daily maximum | ≤ 10.24 lb/d | all year | 04F |
| Aluminum, total [as Al] | monthly average | ≤ 20.9 lb/d | all year | 04F |
| Aluminum, total [as Al] | daily maximum | ≤ 43.5 lb/d | all year | 04F |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 04F |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 04F |
| E. coli | monthly average | ≤ 700 #/100mL | all year | 04F |
| E. coli | daily maximum | ≤ 3200 #/100mL | all year | 04F |
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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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AL0000035 · MCP: https://passage-data.com/mcp