Passage Data · Check a report · Use it from your AI
Sewage treatment plant, major discharger, Demopolis, Alabama. NPDES permit AL0043168, in force until Mar 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| 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 | ≤ 9 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 | ≤ 1213 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 1820 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 | ≤ 10 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 15 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 404 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 606 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 |
| Arsenic, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Barium, total recoverable | daily maximum | report only (mg/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 | daily maximum | ≤ 1 mg/L | all year | 001 |
| E. coli | monthly average | ≤ 250 #/100mL | May–Oct | 001 |
| E. coli | monthly average | ≤ 1050 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| E. coli | daily maximum | ≤ 960 #/100mL | May–Oct | 001 |
| E. coli | daily maximum | ≤ 5000 #/100mL | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow, total | monthly average | report only (gal) | all year | 001 |
| Toxicity [acute], Ceriodaphnia dubia | single sample | ≤ 0 pass=0;fail=1 | Sep | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | single sample | ≤ 0 pass=0;fail=1 | Sep | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 22.5 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 606 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 910 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 | 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 |
| pH | daily minimum | report only (SU) | all year | 004 |
| pH | daily maximum | report only (SU) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| E. coli | daily maximum | report only (#/100mL) | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 004 |
Cited limits by parameter: Alabama's rules and the federal ones.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AL0043168 · MCP: https://passage-data.com/mcp