Clean Water Act discharge permit · NPDES LA0020150
CARENCRO CITY OF - CARENCRO WASTEWATER TREATMENT PLANT, Carencro, LA: NPDES LA0020150 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
CARENCRO CITY OF - CARENCRO WASTEWATER TREATMENT PLANT, held by City of Carencro - Post Road Wastewater Treatment Plant, holds NPDES permit LA0020150, which discharges to Coulee Beau Bassin-Vermilion River. 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 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CARENCRO CITY OF - CARENCRO WASTEWATER TREATMENT PLANT |
|---|---|
| Permittee as filed | City of Carencro - Post Road Wastewater Treatment Plant |
| NPDES ID | LA0020150 |
| 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 | Carencro, LA 70520 |
| Receiving water | COULEE BEAU BASSIN-VERMILION RIVER |
| Subwatershed | Francois Coulee-Vermilion River (HUC 080801030105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 344 | 338 | June 30, 2026 | 2,962% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 116 | 110 | June 30, 2026 | 2,174% over the limit |
| Solids, total suspended | 6 | 84 | 78 | May 31, 2026 | 1,927% over the limit |
| Coliform, fecal general | 2 | 54 | 50 | July 31, 2025 | 99,999% over the limit |
| Oxygen, dissolved [DO] | 1 | 6 | 4 | June 30, 2022 | 38% over the limit |
| pH | 2 | 8 | 2 | March 31, 2020 | |
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Nitrogen, total [as N] | 3 | 0 | 0 | ||
| Phosphorus, total [as P] | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 31, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| December 31, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| May 31, 2022 | Biosolids: Other Management Practice Violation | ST6 |
| December 31, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| October 28, 2021 | WW SSO - Improper Operation and Maintenance | ST6 |
| September 29, 2021 | WW SSO - Improper Operation and Maintenance | ST6 |
| June 8, 2020 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| March 13, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 13, 2020 | Effluent Violations - Unapproved Bypass | ST6 |
| March 13, 2020 | Reporting Violations - Failure to Notify | ST6 |
| September 30, 2018 | WW SSO - Discharge to Waters | ST6 |
| September 30, 2018 | WW SSO - 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.
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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 LA0020150 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.