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Sewage treatment plant, major discharger, Hoover, Alabama. NPDES permit AL0025852, in force until Apr 30, 2029. 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 | Jan, Feb, Mar, Apr, Dec | 001 |
| pH | daily minimum | ≥ 6 SU | Jan, Feb, Mar, Apr, Dec | 001 |
| pH | daily maximum | ≤ 8.5 SU | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 300 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | weekly average | ≤ 450 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | weekly average | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | weekly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 1.5 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 15 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | ≤ 2 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | ≤ 3 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | ≤ 20 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | ≤ 30 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrite + Nitrate total [as N] | weekly average | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrite + Nitrate total [as N] | weekly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ .043 mg/L | Apr | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | Apr | 001 |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Apr | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Jan, Feb, Mar, Dec | 001 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | Apr | 001 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | Jan, Feb, Mar, Dec | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Jan, Feb, Mar, Apr, Dec | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Jan, Feb, Mar, Apr, Dec | 001 |
| Chlorine, total residual | monthly average | ≤ .017 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Chlorine, total residual | daily maximum | ≤ .029 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| E. coli | monthly average | ≤ 548 #/100mL | Jan, Feb, Mar, Apr, Dec | 001 |
| E. coli | daily maximum | ≤ 2507 #/100mL | Jan, Feb, Mar, Apr, Dec | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | ≤ 0 pass=0;fail=1 | Apr, Dec | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | ≤ 0 pass=0;fail=1 | Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 6 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 40 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 60 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | Jan, Feb, Mar, Apr, Dec | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 002 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 002 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.5 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) | all year | 002 |
| Nitrogen, nitrate total [as N] | monthly average | ≤ 7.5 mg/L | all year | 002 |
| Nitrogen, nitrate total [as N] | weekly average | ≤ 10 mg/L | all year | 002 |
| Nitrogen, nitrate total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, nitrate total [as N] | weekly average | report only (lb/d) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | ≤ 10 mg/L | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | ≤ 15 mg/L | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 002 |
| Phosphorus, total [as P] | weekly average | ≤ 1.5 mg/L | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| E. coli | monthly average | ≤ 126 #/100mL | all year | 002 |
| E. coli | daily maximum | ≤ 298 #/100mL | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 22.5 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) | all year | 002 |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Flow rate | daily minimum | ≥ 100 cfs | all year | 003 |
| Flow rate | daily maximum | report only (cfs) | all year | 003 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 003 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 003 |
| Solids, total suspended | weekly average | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4.5 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | ≤ 8 mg/L | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | ≤ 12 mg/L | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | weekly average | report only (lb/d) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | weekly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (lb/d) | all year | 003 |
| Nitrite + Nitrate total [as N] | weekly average | report only (lb/d) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Jan, Feb, Mar, Nov, Dec | 003 |
| Phosphorus, total [as P] | monthly average | ≤ .043 mg/L | Apr–Oct | 003 |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | Jan, Feb, Mar, Nov, Dec | 003 |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | Apr–Oct | 003 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Jan, Feb, Mar, Nov, Dec | 003 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | Apr–Oct | 003 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | Jan, Feb, Mar, Nov, Dec | 003 |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | Apr–Oct | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 003 |
| E. coli | monthly average | report only (#/100mL) | all year | 003 |
| E. coli | daily maximum | report only (#/100mL) | all year | 003 |
| Toxicity [chronic], Ceriodaphnia dubia | single sample | ≤ 0 pass=0;fail=1 | all year | 003 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | single sample | ≤ 0 pass=0;fail=1 | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 22.5 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (lb/d) | 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 |
| 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 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| E. coli | daily maximum | report only (#/100mL) | all year | 005 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 005 |
Cited limits by parameter: Alabama's rules and the federal ones.
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