Clean Water Act discharge permit · NPDES LA0036404
OPELOUSAS CITY OF - CANDY STREET WWTF, Opelousas, LA: NPDES LA0036404 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
OPELOUSAS CITY OF - CANDY STREET WWTF, held by City of Opelousas - Candy Street WWTP, holds NPDES permit LA0036404, which discharges to Bayou Yarbor/Bayou Callahan. EPA’s file records it issued June 19, 2020 and expiring June 30, 2025. 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 - CANDY STREET WWTF |
|---|---|
| Permittee as filed | City of Opelousas - Candy Street WWTP |
| NPDES ID | LA0036404 |
| 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 | June 19, 2020 |
| Expiration date | June 30, 2025 |
| Address | Opelousas, LA 70570 |
| Receiving water | BAYOU YARBOR/BAYOU CALLAHAN |
| Subwatershed | Bayou Bourbeux (HUC 080801030101) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 26Under a numeric limit
- 29With 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 | 336 | 295 | April 30, 2026 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 197 | 134 | July 31, 2026 | 450% over the limit |
| Solids, total suspended | 6 | 174 | 111 | April 30, 2026 | 527% over the limit |
| Chlorine, total residual | 1 | 70 | 69 | May 31, 2026 | 6,567% over the limit |
| Whole Effluent Toxicity [WET] - C. dubia | 0 | 16 | 8 | June 30, 2026 | 100% over the limit |
| Whole effluent toxicity | 0 | 22 | 4 | May 31, 2003 | 76% over the limit |
| Whole Effluent Toxicity [WET] - P. promelas | 0 | 8 | 4 | March 31, 2026 | 13% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 66 | 3 | July 31, 2019 | 60% over the limit |
| Oxygen, dissolved [DO] | 1 | 23 | 3 | April 30, 2026 | 3% over the limit |
| BOD, carbonaceous, percent removal | 0 | 1 | 1 | June 30, 2026 | 120% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 45 | 0 | ||
| pH | 2 | 40 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 34 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 34 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 34 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 30 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 30 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 30 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 30 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 2 | 26 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 23 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 21 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 18 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 18 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 4 | 18 | 0 | ||
| Cyanide, total [as CN] | 0 | 16 | 0 | ||
| Copper, total [as Cu] | 0 | 8 | 0 | ||
| Nitrogen, total [as N] | 3 | 3 | 0 | ||
| Phosphorus, total [as P] | 3 | 3 | 0 | ||
| WET, sublethal retest #1 | 4 | 0 | 0 | ||
| WET, sublethal retest #2 | 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
- 45Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 23, 2024 | Failure to properly operate and maintain the sanitary sewer system [40 CFR 122.41(e)] | ST6 |
| March 12, 2024 | Failure to submit noncompliance report - SSO discharge [40 CFR 122.41(l)(7)] | ST6 |
| January 5, 2024 | Failure to minimize or prevent SSO to waters of the U.S. - adverse impacts [40 CFR 122.41(d)] | ST6 |
| October 23, 2023 | Failure to properly operate and maintain the sanitary sewer system [40 CFR 122.41(e)] | ST6 |
| October 23, 2023 | Failure to submit noncompliance report - SSO discharge [40 CFR 122.41(l)(7)] | ST6 |
| May 31, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 8, 2023 | WW SSO - Discharge to Waters | ST6 |
| May 8, 2023 | WW SSO - Improper Operation and Maintenance | ST6 |
| December 5, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| December 5, 2022 | Reporting Violations - Failure to Notify | ST6 |
| December 5, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| December 5, 2022 | Failure to properly conduct industrial stormwater inspections | ST6 |
| December 5, 2022 | Failure to properly install, initiate, or fully implement industrial stormwater controls | ST6 |
| October 13, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| October 13, 2022 | Failure to minimize or prevent SSO to waters of the U.S. - adverse impacts [40 CFR 122.41(d)] | ST6 |
| May 13, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 13, 2022 | Failure to minimize or prevent SSO to waters of the U.S. - adverse impacts [40 CFR 122.41(d)] | ST6 |
| March 31, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 15, 2022 | WW SSO - Discharge to Waters | ST6 |
| March 15, 2022 | WW SSO - Improper Operation and Maintenance | ST6 |
| January 31, 2022 | WW SSO - Improper Operation and Maintenance | ST6 |
| January 31, 2022 | WW SSO - Discharge to Waters | ST6 |
| January 13, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| December 31, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| December 3, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| March 25, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| March 24, 2021 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 24, 2021 | Failure to properly conduct industrial stormwater inspections | ST6 |
| May 1, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| December 31, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| August 31, 2019 | WW SSO - Improper Operation and Maintenance | ST6 |
| August 31, 2019 | WW SSO - Discharge to Waters | ST6 |
| August 12, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 12, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| August 12, 2019 | Failure to comply with recordkeeping requirements - industrial stormwater [40 CFR 122.41(j)] | ST6 |
| February 28, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| September 30, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 30, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 31, 2018 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| April 30, 2018 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| March 31, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 31, 2017 | WW SSO - Improper Operation and Maintenance | ST6 |
| December 31, 2017 | WW SSO - Discharge to Waters | ST6 |
| December 31, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 15, 2017 | Management Practice Violations - Failure to Maintain Records | 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 15, 2026.