Clean Water Act discharge permit · NPDES LA0003638
MOSAIC FERTILIZER, LLC- TAFT PLANT, Hahnville, LA: NPDES LA0003638 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 18Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MOSAIC FERTILIZER, LLC- TAFT PLANT, held by Mosaic Fertilizer, LLC- Taft Plant, holds NPDES permit LA0003638, which discharges to 0701. EPA’s file records it issued January 19, 2018 and expiring February 28, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MOSAIC FERTILIZER, LLC- TAFT PLANT |
|---|---|
| Permittee as filed | Mosaic Fertilizer, LLC- Taft Plant |
| NPDES ID | LA0003638 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 19, 2018 |
| Expiration date | February 28, 2023 |
| Address | Hahnville, LA 70057 |
| Receiving water | 0701 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bayou Fortier (HUC 080903010206) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 30Pollutants on file
- 18Under a numeric limit
- 28With a violation of any kind
- 2With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Oxygen demand, chem. [high level] [COD] | 0 | 3 | 3 | September 30, 2008 | 33% over the limit |
| pH | 4 | 3 | 1 | March 31, 2005 | |
| Radium 226, total | 4 | 17 | 0 | ||
| Uranium, total | 4 | 8 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 0 | 6 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 0 | 6 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 0 | 6 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 0 | 6 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| Solids, total suspended | 4 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 4 | 0 | ||
| Phosphorus, total [as P] | 4 | 4 | 0 | ||
| Phosphorus, dissolved | 4 | 4 | 0 | ||
| Sulfate, total [as SO4] | 4 | 4 | 0 | ||
| Fluoride, total [as F] | 4 | 4 | 0 | ||
| Cadmium, total [as Cd] | 4 | 4 | 0 | ||
| Aluminum, total [as Al] | 4 | 4 | 0 | ||
| Metals, tox priority pollutants, total | 4 | 4 | 0 | ||
| Alpha, gross particle activity | 4 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 2 | 0 | ||
| Dock discharge of phosphorus | 0 | 2 | 0 | ||
| Oil and grease | 0 | 1 | 0 | ||
| Stream flow, estimated | 0 | 1 | 0 | ||
| pH range excursions, > 60 minutes | 0 | 1 | 0 | ||
| pH range excursions, monthly total accum | 0 | 1 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 8, 2021 | Effluent Violations - Unauthorized Discharge | ST6 |
| April 8, 2021 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID LA0003638 there.
Nearby on the register
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- Every permit record in Hahnville, A to Z
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- Every permit record in Louisiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.