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
- 0Inspections on file
- 0Formal enforcement actions
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.
DERIDDER CITY OF - WWTP & BENEFICIAL USE AREA, De Ridder, Louisiana: Individual permit LA0038407, held by City of DeRidder- Wastewater Treatment Plant; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued August 31, 2018, term to September 30, 2023; discharges to BARNES CREEK/CALCASIEU RIVER.
- Coliform, fecal general: 2 limits, 48 violations of any kind, 22 effluent exceedances, latest December 31, 2024, largest 99,999% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 65 violations of any kind, 16 effluent exceedances, latest May 31, 2025, largest 1,181% over the limit.
- Nitrogen, ammonia total [as N]: 3 limits, 64 violations of any kind, 16 effluent exceedances, latest November 30, 2024, largest 220% over the limit.
- Whole effluent toxicity: 2 limits, 18 violations of any kind, 12 effluent exceedances, latest December 31, 2024, largest 44% over the limit.
- Copper, total [as Cu]: 0 limits, 11 violations of any kind, 11 effluent exceedances, latest January 31, 2007, largest 462% over the limit.
- Solids, total suspended: 3 limits, 66 violations of any kind, 9 effluent exceedances, latest November 30, 2023, largest 47% over the limit.
- Zinc, total [as Zn]: 0 limits, 9 violations of any kind, 5 effluent exceedances, latest January 31, 2007, largest 259% over the limit.
- pH: 2 limits, 23 violations of any kind, 1 effluent exceedance, latest August 31, 2019.
- Oxygen, dissolved [DO]: 1 limit, 12 violations of any kind, 1 effluent exceedance, latest December 31, 2023, largest 20% over the limit.
- BOD, 5-day, 20 deg. C: 0 limits, 3 violations of any kind, 1 effluent exceedance, latest July 31, 2026, largest 13% over the limit.
- Flow, in conduit or thru treatment plant: 2 limits, 29 violations of any kind, 0 effluent exceedances.
- LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas: 2 limits, 12 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas: 2 limits, 12 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 48Hr Acute Pimephales promelas: 1 limit, 8 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 48Hr Acute D. pulex: 1 limit, 7 violations of any kind, 0 effluent exceedances.
- Cadmium, total [as Cd]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Pass/Fail Static Renewal 7Day Chronic Pimephales promelas: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 7Day Chronic Pimephales promelas: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- BOD, percent removal [total]: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Solids, suspended percent removal: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Whole Effluent Toxicity [WET] - D. pulex: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- August 12, 2026: Under Review (State).
- 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).
Louisiana holds 357 Publicly owned treatment works coverages of this permit type in EPA’s file; 246 were issued before LA0038407.
Coverages issued nearest LA0038407
- August 17, 2018: BATON ROUGE, CITY OF, Scotlandville, LA0036439, held by E BATON ROUGE CITY-PAR (NORTH)
- August 17, 2018: SLIDELL CITY OF - TERRACE AVENUE WWTP, Slidell, LA0047180, held by City of Slidell
- August 17, 2018: CLINTON, TOWN OF- WASTEWATER TREATMENT FACILITY, Clinton, LA0048445, held by Town of Clinton- Wastewater Treatment Facility
- August 17, 2018: NATIONAL WATER INFRASTRUCTURE LLC - SILVER OAKS WASTEWATER TREATMENT PLANT, Gonzales, LA0127295, held by NATIONAL WATER INFRASTRUCTURE, LLC - SILVER OAKS WWTP
- August 31, 2018: LAKE PROVIDENCE, TOWN OF- SOUTH POND WWTF, Lake Providence, LA0020486, held by Town of Lake Providence- South Pond
- August 31, 2018: LAFAYETTE CONSOLIDATED GOVERNMENT- COMPOST FACILITY, Lafayette, LA0086231, held by Lafayette Consolidated Government- Compost Facility
- September 7, 2018: PLAQUEMINE, CITY OF- SOUTH WASTEWATER TREATMENT FACILITY, Plaquemine, LA0020648, held by City of Plaquemine- South Wastewater Treatment Plant
- September 7, 2018: ST MARY PARISH WARDS 5&8 JOINT SEWER COMMISSION - REGIONAL SEWERAGE TREATMENT FA, Patterson, LA0068381, held by St. Mary Parish Wards 5 and 8 Joint Sewer Commission
- September 7, 2018: ST JOHN THE BAPTIST PARISH - GARYVILLE WWTP, Garyville, LA0079596, held by St. John the Baptist Parish - Garyville WWTP
- September 18, 2018: BROUSSARD CITY OF - COTE GELEE WETLAND WASTEWATER ASSIMILATION PROJECT, Broussard, LA0020613, held by City of Broussard-Cote Gelee Wetland Wastewater Assimilation Proj.
DERIDDER CITY OF - WWTP & BENEFICIAL USE AREA among its neighbors
EPA’s permit file holds 2 discharge permits in the Barnes Creek Headwaters subwatershed (HUC 080802030501), LA0038407 among them. Its county holds 26, 4 of them major permits; LA0038407 is a major permit.
Other permits in the Barnes Creek Headwaters subwatershed (HUC 080802030501)
- DERIDDER, CITY OF, De Ridder: LAL038407, major permit, discharging to BARNES CREEK/CALCASIEU RIVER, permit term to December 31, 2025
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) |
| Program components on file | POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler LAD070138847 |
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 |
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 |
Inspections
EPA’s inspection file holds no inspection for NPDES LA0038407.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| August 12, 2026 | Under Review | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.