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Sewage treatment plant, Raleigh, Mississippi. NPDES permit MS0036331, in force until Feb 28, 2027. Last 12 months: no values over a limit, 4 of 12 reports late. 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 | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly total | report only (lb/mo) | all year |
| BOD, 5-day, 20 deg. C | annual average | ≤ 50 lb/d | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly total | report only (lb/mo) | all year |
| BOD, 5-day, 20 deg. C | annual average | report only (lb/d) | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 90 mg/L | all year |
| Solids, total suspended | monthly total | report only (lb/mo) | all year |
| Solids, total suspended | annual average | ≤ 150 lb/d | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | monthly total | report only (lb/mo) | all year |
| Solids, total suspended | annual average | report only (lb/d) | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly total | report only (lb/mo) | all year |
| Nitrogen, total [as N] | annual average | report only (lb/d) | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | annual average | report only (lb/d) | all year |
| Nitrogen, total [as N] | monthly total | report only (lb/mo) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly total | report only (lb/mo) | all year |
| Phosphorus, total [as P] | annual average | ≤ 2.6 lb/d | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | annual average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly total | report only (lb/mo) | all year |
| Flow, in conduit or thru treatment plant | annual average | ≤ .2 MGD | all year |
| Chlorine, total residual | monthly average | ≤ .366 mg/L | all year |
| E. coli | monthly average | ≤ 126 #/100mL | all year |
| BOD, 5-day, percent removal | minimum | ≥ 65 % | all year |
| Solids, suspended percent removal | minimum | ≥ 65 % | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
| Flow, total | monthly average | report only (MGD) | all year |
| Flow, total | maximum weekly average | report only (MGD) | all year |
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/MS0036331 · MCP: https://passage-data.com/mcp