Clean Water Act discharge permit · NPDES LA0003093
ENTERGY LOUISIANA, LLC- NINEMILE POINT GENERATING STATION, Westwego, LA: NPDES LA0003093 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
ENTERGY LOUISIANA, LLC- NINEMILE POINT GENERATING STATION, held by Entergy Louisiana, LLC- Ninemile Point Generating Station, holds NPDES permit LA0003093, which discharges to 0705. EPA’s file records it issued June 9, 2017 and expiring May 31, 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 | ENTERGY LOUISIANA, LLC- NINEMILE POINT GENERATING STATION |
|---|---|
| Permittee as filed | Entergy Louisiana, LLC- Ninemile Point Generating Station |
| NPDES ID | LA0003093 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 9, 2017 |
| Expiration date | May 31, 2022 |
| Address | Westwego, LA 70094 |
| Receiving water | 0705 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mississippi River-Bonnet Carre Spillway (HUC 080901000101) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler LAD069538676; ICIS-AIR source LA0000002205100006 |
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
- 34Pollutants on file
- 28Under a numeric limit
- 15With a violation of any kind
- 3With 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 | 10 | 16 | 6 | July 31, 2018 | 277% over the limit |
| Carbon, tot organic [TOC] | 8 | 11 | 3 | June 30, 2015 | 1,684% over the limit |
| pH | 6 | 17 | 2 | August 31, 2024 | |
| Flow, in conduit or thru treatment plant | 28 | 35 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 0 | 30 | 0 | ||
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 0 | 30 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 0 | 30 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 0 | 30 | 0 | ||
| Oil and grease | 11 | 19 | 0 | ||
| Temperature, water deg. fahrenheit | 8 | 18 | 0 | ||
| Chlorine, total residual | 5 | 18 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 0 | 16 | 0 | ||
| Coef Of Var Static Renewal 48Hr Acute Pimephales promelas | 0 | 16 | 0 | ||
| Copper, total [as Cu] | 2 | 4 | 0 | ||
| Iron, total [as Fe] | 2 | 4 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 0 | 0 | ||
| WET, sublethal retest #1 | 4 | 0 | 0 | ||
| WET, sublethal retest #2 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity - Retest #3 | 4 | 0 | 0 | ||
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 4 | 0 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| Lead, total [as Pb] | 1 | 0 | 0 | ||
| Benzene | 1 | 0 | 0 | ||
| BTEX | 1 | 0 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES LA0003093.
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 LA0003093 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.