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Sewage treatment plant, major discharger, Jackson, Mississippi. NPDES permit MS0024295, in force until Apr 30, 2027. Last 12 months: over a limit 2 times (last August 2026), 4 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Flow, in conduit or thru treatment plant, monthly average | 46.52 MGD | ≤ 46 MGD | 1% |
| August 2026 | Solids, suspended percent removal, minimum | 75 % | ≥ 85 % | 67% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | minimum | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | maximum | report only (mg/L) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | May–Oct | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 11516 lb/d | May–Oct | 001 |
| Solids, total suspended | monthly average | ≤ 15021 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | maximum weekly average | ≤ 17274 lb/d | May–Oct | 001 |
| Solids, total suspended | maximum weekly average | ≤ 22532 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | maximum weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | maximum weekly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | maximum weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | maximum monthly average | ≤ 6031 lb/d | all year | 001 |
| Nitrogen, total [as N] | maximum weekly average | ≤ 9046.5 lb/d | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | maximum weekly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | maximum weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.3 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 3 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 768 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1652 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1152 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2503 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | maximum weekly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | maximum monthly average | ≤ 1297 lb/d | all year | 001 |
| Phosphorus, total [as P] | maximum weekly average | ≤ 1945.5 lb/d | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | maximum 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] | maximum weekly average | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 60 MGD | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 46 MGD | May–Oct | 001 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | May–Oct | 001 |
| Chlorine, total residual | monthly average | ≤ .046 mg/L | all year | 001 |
| Chlorine, total residual | maximum weekly average | ≤ .08 mg/L | all year | 001 |
| E. coli | monthly average | ≤ 126 #/100mL | all year | 001 |
| E. coli | maximum weekly average | ≤ 410 #/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 10.5 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10014 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 2687 lb/d | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 15021 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 4031 lb/d | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum 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] | maximum weekly average | report only (lb/d) | all year | 001 |
| BOD, carb-5 day, 20 deg C, percent removal | minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | minimum | ≥ 85 % | all year | 001 |
| Sludge settleability 30 minute | minimum | report only (mL/L) | all year | 001 |
| Sludge settleability 30 minute | maximum | report only (mL/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | all year | 101 |
| pH | minimum | report only (SU) | all year | 201 |
| pH | maximum | report only (SU) | all year | 201 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 201 |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year | 201 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 201 |
| Solids, total suspended | maximum weekly average | report only (lb/d) | all year | 201 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 201 |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (mg/L) | all year | 201 |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | 201 |
| Nitrogen, ammonia total [as N] | maximum weekly average | report only (lb/d) | all year | 201 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 201 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | all year | 201 |
| Mercury, total recoverable | monthly average | report only (mg/L) | all year | 201 |
| Mercury, total recoverable | maximum weekly average | report only (mg/L) | all year | 201 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 201 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | report only (mg/L) | all year | 201 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 201 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | report only (lb/d) | all year | 201 |
Cited limits by parameter: Mississippi's rules and the federal ones.
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