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Sewage treatment plant, Nettleton, Mississippi. NPDES permit MS0058122, in force until Oct 31, 2028. Last 12 months: no values over a limit, 39 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 8 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 12 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 1 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1.5 lb/d | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | report only (lb/d) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | maximum monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year |
| Solids, total suspended | maximum monthly average | ≤ 3.75 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 5.63 lb/d | all year |
| Solids, total suspended | maximum monthly average | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Solids, total suspended | maximum monthly average | report only (lb/d) | all year |
| Solids, total suspended | daily maximum | report only (lb/d) | all year |
| Nitrogen, total [as N] | maximum monthly average | ≤ 1.44 lb/d | all year |
| Nitrogen, total [as N] | daily maximum | ≤ 2.16 lb/d | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 1.5 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.25 mg/L | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ .19 lb/d | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .28 lb/d | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year |
| Phosphorus, total [as P] | maximum monthly average | ≤ .65 lb/d | all year |
| Phosphorus, total [as P] | daily maximum | ≤ .975 lb/d | all year |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ .015 MGD | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | maximum monthly average | ≤ .011 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year |
| E. coli | daily maximum | ≤ 410 #/100mL | all year |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year |
| Solids, suspended percent removal | minimum | ≥ 85 % | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], daily maximum | 0.18 lb/d | tighter | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 0.12 lb/d | tighter | — | — |
Cited limits by parameter: Mississippi's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MS0058122 · MCP: https://passage-data.com/mcp