Clean Water Act discharge permit · NPDES LA0127208
THIBODAUX CITY OF - NORTH THIBODAUX WWTP, Thibodaux, LA: NPDES LA0127208 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 23Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
THIBODAUX CITY OF - NORTH THIBODAUX WWTP, held by CITY OF THIBODAUX- NORTH THIBODAUX WWTP, holds NPDES permit LA0127208. EPA’s file records it issued September 24, 2018 and expiring October 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | THIBODAUX CITY OF - NORTH THIBODAUX WWTP |
|---|---|
| Permittee as filed | CITY OF THIBODAUX- NORTH THIBODAUX WWTP |
| NPDES ID | LA0127208 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 24, 2018 |
| Expiration date | October 31, 2023 |
| Address | Thibodaux, LA 70000 |
| Subwatershed | Grand Bayou (HUC 080903010202) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 26Pollutants on file
- 23Under a numeric limit
- 20With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 3 | 87 | 54 | July 31, 2025 | 293% over the limit |
| Solids, total suspended | 3 | 85 | 52 | July 31, 2026 | 504% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 0 | 17 | 14 | July 31, 2026 | 1,560% over the limit |
| Coliform, fecal general | 2 | 34 | 12 | May 31, 2026 | 400% over the limit |
| Solids, suspended percent removal | 0 | 2 | 2 | March 31, 2026 | 251% over the limit |
| pH | 2 | 22 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 22 | 0 | ||
| Nitrogen, total [as N] | 3 | 18 | 0 | ||
| Phosphorus, total [as P] | 3 | 18 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 5 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 5 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 3 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 0 | 0 | ||
| WET, sublethal retest #1 | 4 | 0 | 0 | ||
| WET, sublethal retest #2 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 4 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 11, 2022 | Management Practice Violations - Failure to Maintain Records | ST6 |
| August 11, 2022 | Management Practice Violations - Failure to Develop Adequate SPCC Plan | ST6 |
| August 11, 2022 | Failure to develop, maintain, or get approval of an adequate SWPPP (industrial stormwater) | ST6 |
| August 11, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| December 31, 2021 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 31, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| December 31, 2018 | Permit Violations - Violation Specified in Comment | 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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.