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Sewage treatment plant, Lambert, Mississippi. NPDES permit MS0020231, in force until Oct 31, 2028. Last 12 months: over a limit once (last December 2025), 13 required values missing, 1 of 1 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Solids, suspended percent removal, minimum | 51 % | ≥ 65 % | 40% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 188 lb/d | all year |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 281 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 | maximum weekly average | 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 | maximum weekly average | report only (lb/d) | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | maximum monthly average | ≤ 90 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 135 mg/L | all year |
| Solids, total suspended | maximum monthly average | ≤ 563 lb/d | all year |
| Solids, total suspended | maximum weekly average | ≤ 844 lb/d | all year |
| Solids, total suspended | maximum monthly average | report only (mg/L) | all year |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year |
| Solids, total suspended | maximum monthly average | report only (lb/d) | all year |
| Solids, total suspended | maximum weekly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | maximum monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | maximum weekly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | maximum monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | maximum weekly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | maximum monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | maximum weekly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | maximum monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | maximum weekly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | maximum weekly average | 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] | maximum weekly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | maximum monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | maximum weekly average | 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] | maximum weekly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | maximum weekly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | maximum monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | maximum weekly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | maximum weekly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | minimum weekly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | maximum weekly average | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ .75 MGD | all year |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (MGD) | all year |
| Chlorine, total residual | maximum monthly average | report only (mg/L) | all year |
| Chlorine, total residual | maximum weekly average | ≤ 1 mg/L | all year |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year |
| E. coli | maximum weekly average | ≤ 410 #/100mL | all year |
| BOD, 5-day, percent removal | minimum | ≥ 65 % | all year |
| Solids, suspended percent removal | minimum | ≥ 65 % | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C, maximum monthly average | 50 lb/d | tighter | — | — |
| BOD, 5-day, 20 deg. C, maximum monthly average | 8 mg/L | tighter | — | — |
| BOD, 5-day, 20 deg. C, maximum weekly average | 75 lb/d | tighter | — | — |
| BOD, 5-day, 20 deg. C, maximum weekly average | 12 mg/L | tighter | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 9 lb/d | new | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 1.37 mg/L | new | — | — |
| Nitrogen, ammonia total [as N], maximum weekly average | 13 lb/d | new | — | — |
| Nitrogen, ammonia total [as N], maximum weekly average | 2.05 mg/L | new | — | — |
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/MS0020231 · MCP: https://passage-data.com/mcp