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Sewage treatment plant, major discharger, Enterprise, Alabama. NPDES permit AL0020036 expired Apr 30, 2026; its limits still apply. Last 12 months: over a limit 3 times (last July 2026), 5 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], weekly average | 3.64 | ≤ 3 mg/L | 21% |
| July 2026 | E. coli, daily maximum | T | ≤ 298 #/100mL | — |
| July 2026 | E. coli, monthly average | T | ≤ 126 #/100mL | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 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 | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 375 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 562 lb/d | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 25 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 37.5 lb/d | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (lb/d) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | weekly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrite + Nitrate total [as N] | weekly average | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | all year | 001 |
| Copper, total recoverable | monthly average | ≤ 12.7 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 18 ug/L | 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 |
| Chlorine, total residual | monthly average | ≤ .01 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | all year | 001 |
| E. coli | monthly average | ≤ 126 #/100mL | May–Oct | 001 |
| E. coli | monthly average | ≤ 548 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| E. coli | daily maximum | ≤ 298 #/100mL | May–Oct | 001 |
| E. coli | daily maximum | ≤ 2507 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | ≤ 0 pass=0;fail=1 | Nov | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | ≤ 0 pass=0;fail=1 | Nov | 001 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 9 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 13.5 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 112.5 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 168.8 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) | all year | 001 |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | 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 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| E. coli | daily maximum | report only (#/100mL) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily minimum | report only (SU) | all year | 003 |
| pH | daily maximum | report only (SU) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| E. coli | daily maximum | report only (#/100mL) | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 003 |
Cited limits by parameter: Alabama's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/AL0020036 · MCP: https://passage-data.com/mcp