Clean Water Act discharge permit · NPDES LA0067083
SULPHUR, CITY OF-WWTP, Sulphur, LA: NPDES LA0067083 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 23Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
SULPHUR, CITY OF-WWTP, held by City of Sulphur- WWTP, holds NPDES permit LA0067083, which discharges to Calcasieu River. EPA’s file records it issued September 15, 2017 and expiring October 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SULPHUR, CITY OF-WWTP |
|---|---|
| Permittee as filed | City of Sulphur- WWTP |
| NPDES ID | LA0067083 |
| 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 | September 15, 2017 |
| Expiration date | October 30, 2022 |
| Address | Sulphur, LA 70664 |
| Receiving water | CALCASIEU RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Calcasieu River-Prien Lake (HUC 080802060303) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler LA0000205070 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 30Pollutants on file
- 23Under a numeric limit
- 27With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 249 | 240 | March 31, 2025 | 1,876% over the limit |
| Coliform, fecal general | 4 | 119 | 115 | June 30, 2024 | 421% over the limit |
| Copper, total [as Cu] | 0 | 18 | 16 | October 31, 2006 | 464% over the limit |
| Enterococci | 0 | 16 | 16 | July 31, 2026 | 213% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 9 | 3 | March 31, 2021 | 17% over the limit |
| Chlorine, total residual | 0 | 2 | 1 | February 29, 2004 | 607% over the limit |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 9 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 4 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 8 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 7 | 0 | ||
| WET, sublethal retest #1 | 8 | 6 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 6 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 4 | 6 | 0 | ||
| pH | 4 | 5 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 5 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Menidia | 4 | 4 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 4 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 4 | 4 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Menidia menidia | 2 | 4 | 0 | ||
| Nitrogen, total [as N] | 6 | 3 | 0 | ||
| Phosphorus, total [as P] | 6 | 3 | 0 | ||
| Whole effluent toxicity - retest #1 | 8 | 2 | 0 | ||
| Whole effluent toxicity - retest #2 | 8 | 2 | 0 | ||
| Mercury, total [as Hg] | 0 | 2 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia menidia | 0 | 2 | 0 | ||
| Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 0 | 2 | 0 | ||
| NOAEC Lethal Static Renewal 48HR Acute Menidia menidia | 0 | 2 | 0 | ||
| WET, sublethal retest #2 | 8 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 8 | 0 | 0 | ||
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 8 | 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
- 20Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 29, 2024 | WW SSO - Improper Operation and Maintenance | ST6 |
| April 29, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 30, 2023 | WW SSO - Improper Operation and Maintenance | ST6 |
| March 30, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 30, 2022 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| August 24, 2022 | WW SSO - Improper Operation and Maintenance | ST6 |
| August 24, 2022 | WW SSO - Discharge to Waters | ST6 |
| June 8, 2021 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 26, 2020 | WW SSO - Improper Operation and Maintenance | ST6 |
| May 26, 2020 | WW SSO - Discharge to Waters | ST6 |
| June 1, 2019 | WW SSO - Discharge to Waters | ST6 |
| June 1, 2019 | WW SSO - Improper Operation and Maintenance | ST6 |
| January 3, 2019 | WW SSO - Discharge to Waters | ST6 |
| January 3, 2019 | WW SSO - Improper Operation and Maintenance | ST6 |
| December 13, 2018 | WW SSO - Discharge to Waters | ST6 |
| December 13, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| January 11, 2018 | WW SSO - Discharge to Waters | ST6 |
| January 11, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| July 8, 2017 | WW SSO - Discharge to Waters | ST6 |
| July 8, 2017 | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.