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Water Transportation Services, Westwego, Louisiana. NPDES permit LA0065048, in force until Aug 14, 2028. Last 12 months: over a limit once (last October 2025), 16 of 46 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Solids, total suspended, daily maximum | 55 mg/L | ≤ 45 mg/L | 22% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 22 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 22 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 26 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 26 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | ≤ .02 mg/L | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | ≤ .02 mg/L | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ .42 mg/L | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ .42 mg/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .1 mg/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .1 mg/L | all year | 001 |
| Lead, total [as Pb] | daily maximum | ≤ .14 mg/L | all year | 001 |
| Lead, total [as Pb] | daily maximum | ≤ .14 mg/L | all year | 001 |
| Nickel, total [as Ni] | daily maximum | ≤ .58 mg/L | all year | 001 |
| Nickel, total [as Ni] | daily maximum | ≤ .58 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 8.3 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 8.3 mg/L | all year | 001 |
| Toluene | daily maximum | report only (mg/L) | all year | 001 |
| Toluene | daily maximum | report only (mg/L) | all year | 001 |
| Benzene | daily maximum | report only (mg/L) | all year | 001 |
| Benzene | daily maximum | report only (mg/L) | all year | 001 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 001 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 001 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 001 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .0013 mg/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .0013 mg/L | all year | 001 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 001 |
| Xylene [mix of m+o+p] | daily maximum | report only (mg/L) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 250 mg/L | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 250 mg/L | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Oil and grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Oil and grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 250 mg/L | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 250 mg/L | all year | 003 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Oil and grease visual | daily maximum | ≤ 0 occur/d | all year | 003 |
| Oil and grease visual | daily maximum | ≤ 0 occur/d | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 004 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 004 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 004 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 005 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 006 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 006 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 006 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 006 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 006 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 007 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
Cited limits by parameter: Louisiana's rules and the federal ones.
Same industry: the 28 Water Transportation permits in Louisiana.
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