Clean Water Act discharge permit · NPDES LA0038407
DERIDDER CITY OF - WWTP & BENEFICIAL USE AREA, De Ridder, LA: NPDES LA0038407 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
DERIDDER CITY OF - WWTP & BENEFICIAL USE AREA, held by City of DeRidder- Wastewater Treatment Plant, holds NPDES permit LA0038407, which discharges to Barnes Creek/Calcasieu River. EPA’s file records it issued August 31, 2018 and expiring September 30, 2023. 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 | DERIDDER CITY OF - WWTP & BENEFICIAL USE AREA |
|---|---|
| Permittee as filed | City of DeRidder- Wastewater Treatment Plant |
| NPDES ID | LA0038407 |
| 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 | August 31, 2018 |
| Expiration date | September 30, 2023 |
| Address | De Ridder, LA 70634 |
| Receiving water | BARNES CREEK/CALCASIEU RIVER |
| Subwatershed | Barnes Creek Headwaters (HUC 080802030501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 33Pollutants on file
- 17Under a numeric limit
- 30With a violation of any kind
- 10With 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 | 48 | 22 | December 31, 2024 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 65 | 16 | May 31, 2025 | 1,181% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 64 | 16 | November 30, 2024 | 220% over the limit |
| Whole effluent toxicity | 2 | 18 | 12 | December 31, 2024 | 44% over the limit |
| Copper, total [as Cu] | 0 | 11 | 11 | January 31, 2007 | 462% over the limit |
| Solids, total suspended | 3 | 66 | 9 | November 30, 2023 | 47% over the limit |
| Zinc, total [as Zn] | 0 | 9 | 5 | January 31, 2007 | 259% over the limit |
| pH | 2 | 23 | 1 | August 31, 2019 | |
| Oxygen, dissolved [DO] | 1 | 12 | 1 | December 31, 2023 | 20% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 3 | 1 | July 31, 2026 | 13% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 29 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 2 | 12 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 2 | 12 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 2 | 10 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 2 | 10 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 1 | 8 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 1 | 7 | 0 | ||
| Cadmium, total [as Cd] | 0 | 4 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 0 | 4 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| BOD, percent removal [total] | 0 | 1 | 0 | ||
| Solids, suspended percent removal | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 3 | 0 | 0 | ||
| Phosphorus, total [as P] | 3 | 0 | 0 | ||
| Whole Effluent Toxicity [WET] - D. pulex | 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
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 1, 2025 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| December 31, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| September 18, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 18, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| December 31, 2023 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| April 3, 2023 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| February 29, 2020 | Monitoring Violations - Failure to Monitor for Toxicity Requirements | ST6 |
| December 31, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| November 30, 2019 | Monitoring Violations - Failure to Monitor for Toxicity Requirements | ST6 |
| June 19, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| June 19, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 30, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 24, 2017 | Effluent Violations - Unauthorized Discharge | 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 September 14, 2026.