Clean Water Act discharge permit · NPDES LA0127469
OPELOUSAS CITY OF - SOUTH OPELOUSAS WWTP, Opelousas, LA: NPDES LA0127469 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
OPELOUSAS CITY OF - SOUTH OPELOUSAS WWTP, held by CITY OF OPELOUSAS - SOUTH OPELOUSAS WWTP, holds NPDES permit LA0127469. EPA’s file records it issued February 25, 2021 and expiring March 31, 2026. 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 | OPELOUSAS CITY OF - SOUTH OPELOUSAS WWTP |
|---|---|
| Permittee as filed | CITY OF OPELOUSAS - SOUTH OPELOUSAS WWTP |
| NPDES ID | LA0127469 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 25, 2021 |
| Expiration date | March 31, 2026 |
| Address | Opelousas, LA 70570 |
| Subwatershed | Bayou Bourbeux (HUC 080801030101) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 2 | 43 | 31 | November 30, 2025 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 29 | 7 | May 31, 2025 | 160% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 28 | 6 | February 28, 2023 | 166% over the limit |
| Oxygen, dissolved [DO] | 1 | 12 | 6 | May 31, 2025 | 95% over the limit |
| Solids, total suspended | 6 | 24 | 2 | December 31, 2025 | 20% over the limit |
| pH | 2 | 13 | 1 | August 31, 2024 | |
| Flow, in conduit or thru treatment plant | 2 | 20 | 0 | ||
| Nitrogen, total [as N] | 3 | 8 | 0 | ||
| Phosphorus, total [as P] | 3 | 8 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 30, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 30, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| December 31, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| December 31, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | 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 LA0127469 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.