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Sewage treatment plant, Delcambre, Louisiana. NPDES permit LA0033251, in force until Mar 31, 2028. Last 12 months: over a limit 45 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | BOD, 5-day, 20 deg. C, monthly average | 38 mg/L | ≤ 30 mg/L | 27% |
| November 2025 | BOD, 5-day, 20 deg. C, monthly average | 90 lb/d | ≤ 88 lb/d | 2% |
| November 2025 | BOD, 5-day, 20 deg. C, weekly average | 47 mg/L | ≤ 45 mg/L | 4% |
| November 2025 | Solids, total suspended, monthly average | 185 lb/d | ≤ 88 lb/d | 110% |
| November 2025 | Solids, total suspended, monthly average | 79 mg/L | ≤ 30 mg/L | 163% |
| November 2025 | Solids, total suspended, weekly average | 95 mg/L | ≤ 45 mg/L | 111% |
| December 2025 | Coliform, fecal general, weekly geometric mean | 1046.2 #/100mL | ≤ 400 #/100mL | 162% |
| December 2025 | Solids, total suspended, monthly average | 162 lb/d | ≤ 88 lb/d | 84% |
| January 2026 | Solids, total suspended, monthly average | 49 mg/L | ≤ 30 mg/L | 63% |
| January 2026 | Solids, total suspended, weekly average | 58 mg/L | ≤ 45 mg/L | 29% |
| February 2026 | BOD, 5-day, 20 deg. C, monthly average | 103 lb/d | ≤ 88 lb/d | 17% |
| February 2026 | Solids, total suspended, monthly average | 392 lb/d | ≤ 88 lb/d | 345% |
| February 2026 | Solids, total suspended, monthly average | 78 mg/L | ≤ 30 mg/L | 160% |
| February 2026 | Solids, total suspended, weekly average | 79 mg/L | ≤ 45 mg/L | 76% |
| March 2026 | Coliform, fecal general, weekly geometric mean | 2419.6 #/100mL | ≤ 400 #/100mL | 505% |
| March 2026 | Solids, total suspended, monthly average | 190 lb/d | ≤ 88 lb/d | 116% |
| March 2026 | Solids, total suspended, monthly average | 76 mg/L | ≤ 30 mg/L | 153% |
| March 2026 | Solids, total suspended, weekly average | 82 mg/L | ≤ 45 mg/L | 82% |
| April 2026 | BOD, 5-day, 20 deg. C, monthly average | 151 lb/d | ≤ 29 lb/d | 421% |
| April 2026 | BOD, 5-day, 20 deg. C, monthly average | 46 mg/L | ≤ 10 mg/L | 360% |
| April 2026 | BOD, 5-day, 20 deg. C, weekly average | 47 mg/L | ≤ 15 mg/L | 213% |
| April 2026 | Solids, total suspended, monthly average | 231 lb/d | ≤ 44 lb/d | 425% |
| April 2026 | Solids, total suspended, monthly average | 70 mg/L | ≤ 15 mg/L | 367% |
| April 2026 | Solids, total suspended, weekly average | 136 mg/L | ≤ 23 mg/L | 491% |
| May 2026 | BOD, 5-day, 20 deg. C, monthly average | 135 lb/d | ≤ 29 lb/d | 366% |
| May 2026 | BOD, 5-day, 20 deg. C, monthly average | 20 mg/L | ≤ 10 mg/L | 100% |
| May 2026 | BOD, 5-day, 20 deg. C, weekly average | 20 mg/L | ≤ 15 mg/L | 33% |
| May 2026 | Coliform, fecal general, monthly geometric mean | 433.3 #/100mL | ≤ 200 #/100mL | 117% |
| May 2026 | Coliform, fecal general, weekly geometric mean | 2419.6 #/100mL | ≤ 400 #/100mL | 505% |
| May 2026 | Enterococci, monthly geometric mean | 294.7 CFU/100mL | ≤ 35 CFU/100mL | 742% |
| May 2026 | Enterococci, weekly geometric mean | 2419.6 CFU/100mL | ≤ 135 CFU/100mL | 1692% |
| May 2026 | Solids, total suspended, monthly average | 438 lb/d | ≤ 44 lb/d | 895% |
| May 2026 | Solids, total suspended, monthly average | 63 mg/L | ≤ 15 mg/L | 320% |
| May 2026 | Solids, total suspended, weekly average | 82 mg/L | ≤ 23 mg/L | 257% |
| June 2026 | BOD, 5-day, 20 deg. C, monthly average | 106 lb/d | ≤ 29 lb/d | 266% |
| June 2026 | BOD, 5-day, 20 deg. C, monthly average | 23 mg/L | ≤ 10 mg/L | 130% |
| June 2026 | BOD, 5-day, 20 deg. C, weekly average | 24 mg/L | ≤ 15 mg/L | 60% |
| June 2026 | Coliform, fecal general, monthly geometric mean | 285.1 #/100mL | ≤ 200 #/100mL | 43% |
| June 2026 | Coliform, fecal general, weekly geometric mean | 2419.6 #/100mL | ≤ 400 #/100mL | 505% |
| June 2026 | Enterococci, monthly geometric mean | 148.8 CFU/100mL | ≤ 35 CFU/100mL | 325% |
| June 2026 | Enterococci, weekly geometric mean | 517.2 CFU/100mL | ≤ 135 CFU/100mL | 283% |
| June 2026 | Solids, total suspended, monthly average | 263 lb/d | ≤ 44 lb/d | 498% |
| June 2026 | Solids, total suspended, monthly average | 57 mg/L | ≤ 15 mg/L | 280% |
| June 2026 | Solids, total suspended, weekly average | 62 mg/L | ≤ 23 mg/L | 170% |
| June 2026 | pH, instantaneous maximum | 9.45 SU | ≤ 9 SU | — |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 15 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 29 lb/d | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 23 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 44 lb/d | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | weekly average | 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] | weekly average | 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 (MGD) | all year |
| Flow, in conduit or thru treatment plant | weekly average | report only (MGD) | all year |
| Enterococci | monthly geometric mean | ≤ 35 CFU/100mL | May–Oct |
| Enterococci | weekly geometric mean | ≤ 135 CFU/100mL | May–Oct |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/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
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