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Federal facility (Space Research And Technology), John C Stennis Space Center, Mississippi. NPDES permit MS0021610, in force until Jan 31, 2028. Last 12 months: over a limit 6 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 001 | Oxygen, dissolved [DO], minimum | 4.96 mg/L | ≥ 6 mg/L | 17% |
| May 2026 | 011 | Oil & Grease, daily maximum | 52.5 mg/L | ≤ 15 mg/L | 250% |
| May 2026 | 011 | Oil & Grease, monthly average | 26.3 mg/L | ≤ 10 mg/L | 163% |
| June 2026 | 001 | Oxygen, dissolved [DO], minimum | 4.69 mg/L | ≥ 6 mg/L | 22% |
| July 2026 | 001 | Oxygen, dissolved [DO], minimum | 3.47 mg/L | ≥ 6 mg/L | 42% |
| August 2026 | 001 | Oxygen, dissolved [DO], minimum | 4.03 mg/L | ≥ 6 mg/L | 33% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 6 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 | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9 mg/L | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | 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 |
| E. coli | monthly average | ≤ 126 #/100mL | all year | 001 |
| E. coli | daily maximum | ≤ 410 #/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 15 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily 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 | ≤ 410 #/100mL | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 15 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | annual average | ≤ 30 mg/L | all year | 008 |
| Solids, total suspended | annual maximum | ≤ 45 mg/L | all year | 008 |
| Nitrogen, total [as N] | annual average | report only (lb/d) | all year | 008 |
| Nitrogen, total [as N] | annual maximum | report only (lb/d) | all year | 008 |
| Phosphorus, total [as P] | annual average | report only (lb/d) | all year | 008 |
| Phosphorus, total [as P] | annual maximum | report only (lb/d) | all year | 008 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | annual maximum | report only (MGD) | all year | 008 |
| E. coli | annual average | ≤ 126 #/100mL | all year | 008 |
| E. coli | annual maximum | ≤ 410 #/100mL | all year | 008 |
| BOD, carbonaceous [5 day, 20 C] | annual average | ≤ 30 mg/L | all year | 008 |
| BOD, carbonaceous [5 day, 20 C] | annual maximum | ≤ 45 mg/L | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 010 |
| pH | maximum | ≤ 9 SU | all year | 010 |
| Solids, total suspended | annual average | ≤ 30 mg/L | all year | 010 |
| Solids, total suspended | annual maximum | ≤ 45 mg/L | all year | 010 |
| Nitrogen, total [as N] | annual average | report only (lb/d) | all year | 010 |
| Nitrogen, total [as N] | annual maximum | report only (lb/d) | all year | 010 |
| Phosphorus, total [as P] | annual average | report only (lb/d) | all year | 010 |
| Phosphorus, total [as P] | annual maximum | report only (lb/d) | all year | 010 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 010 |
| Flow, in conduit or thru treatment plant | annual maximum | report only (MGD) | all year | 010 |
| E. coli | annual average | ≤ 126 #/100mL | all year | 010 |
| E. coli | annual maximum | ≤ 410 #/100mL | all year | 010 |
| BOD, carbonaceous [5 day, 20 C] | annual average | ≤ 30 mg/L | all year | 010 |
| BOD, carbonaceous [5 day, 20 C] | annual maximum | ≤ 45 mg/L | all year | 010 |
| pH | minimum | ≥ 6 SU | all year | 011 |
| pH | maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 011 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 011 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
Cited limits by parameter: Mississippi's rules and the federal ones.
Same industry: the 9 Administration of Economic Programs permits in Mississippi.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MS0021610 · MCP: https://passage-data.com/mcp