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Sewage treatment plant, Port Allen, Louisiana. NPDES permit LA0108588, in force until Dec 14, 2027. Last 12 months: over a limit 7 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Solids, total suspended, monthly average | 32 mg/L | ≤ 30 mg/L | 7% |
| April 2026 | Solids, total suspended, monthly average | 34.9 mg/L | ≤ 30 mg/L | 16% |
| May 2026 | Coliform, fecal general, weekly geometric mean | 9210 MPN/100mL | ≤ 400 #/100mL | 2203% |
| May 2026 | Solids, total suspended, monthly average | 36.6 mg/L | ≤ 30 mg/L | 22% |
| May 2026 | Solids, total suspended, weekly average | 47.2 mg/L | ≤ 45 mg/L | 5% |
| June 2026 | Solids, total suspended, monthly average | 48.3 mg/L | ≤ 30 mg/L | 61% |
| June 2026 | Solids, total suspended, weekly average | 68.9 mg/L | ≤ 45 mg/L | 53% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 40 lb/d | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 40 lb/d | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 40 lb/d | all year |
| Solids, total suspended | monthly average | ≤ 40 lb/d | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | all year |
| Flow, in conduit or thru treatment plant | weekly average | report only (gal/d) | all year |
| Flow, in conduit or thru treatment plant | weekly average | report only (gal/d) | all year |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year |
| Coliform, fecal general | weekly geometric mean | ≤ 400 #/100mL | all year |
| Coliform, fecal general | weekly geometric mean | ≤ 400 #/100mL | all year |
Cited limits by parameter: Louisiana'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/LA0108588 · MCP: https://passage-data.com/mcp