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Sewerage Systems, Rayville, Louisiana. NPDES permit LA0127904, in force until Jun 30, 2031. No reports in EPA's file for the last 12 months. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | 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 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year |
| Molybdenum, total [as Mo] | daily maximum | report only (ug/L) | all year |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year |
| Coliform, fecal general | daily maximum | ≤ 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/LA0127904 · MCP: https://passage-data.com/mcp