Clean Water Act discharge permit · NPDES LA0104868
MAIN IRON WORKS INC, Houma, LA: NPDES LA0104868 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MAIN IRON WORKS INC, held by MAIN IRON WORKS LLC, holds NPDES permit LA0104868, which discharges to Not Available. EPA’s file records it issued May 27, 2016 and expiring June 30, 2021. 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 | MAIN IRON WORKS INC |
|---|---|
| Permittee as filed | MAIN IRON WORKS LLC |
| NPDES ID | LA0104868 |
| 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 | May 27, 2016 |
| Expiration date | June 30, 2021 |
| Address | Houma, LA 70363 |
| Receiving water | NOT AVAILABLE |
| Subwatershed | Bayou Terrebonne (HUC 080903020501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 8With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 8 | 51 | 41 | June 30, 2026 | 800% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 46 | 41 | June 30, 2026 | 980% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 37 | 27 | March 31, 2026 | 99,999% over the limit |
| Nitrogen, organic total [as N] | 4 | 32 | 27 | June 30, 2026 | 2,207% over the limit |
| Coliform, fecal general | 8 | 21 | 11 | March 31, 2026 | 99,999% over the limit |
| Carbon, tot organic [TOC] | 3 | 2 | 2 | December 31, 2021 | 116% over the limit |
| pH | 14 | 20 | 0 | ||
| Flow, in conduit or thru treatment plant | 14 | 20 | 0 | ||
| Oil & Grease | 3 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 31, 2024 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| December 31, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| January 1, 2021 | Permit Violations - Failure to Submit Timely Permit Renewal Application | 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 LA0104868 there.
Nearby on the register
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- Every permit record in Louisiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.