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Clean Water Act discharge permit · NPDES LA0112704

ENTERGY LOUISIANA LLC - CALCASIEU PLANT, Sulphur, LA: NPDES LA0112704 discharge permit, effluent exceedances, inspections, penalties

ENTERGY LOUISIANA LLC - CALCASIEU PLANT, held by ENTERGY LOUISIANA LLC, holds NPDES permit LA0112704, which discharges to Moss Lake. EPA’s file records it issued September 18, 2018 and expiring September 30, 2023. 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 filedENTERGY LOUISIANA LLC - CALCASIEU PLANT
Permittee as filedENTERGY LOUISIANA LLC
NPDES IDLA0112704
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 18, 2018
Expiration dateSeptember 30, 2023
AddressSulphur, LA 70665
Receiving waterMOSS LAKE
Receiving water impaired303(D) Listed
SubwatershedCalcasieu River-Prien Lake (HUC 080802060303)
SIC4911 – Electric Services
Other EPA IDs (FRS)RCRA handler LAR000038067; ICIS-AIR source LA0000002201900219

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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Coliform, fecal general244December 31, 202599,999% over the limit
pH8122August 31, 2017
Oil & Grease522April 30, 202670% over the limit
Enterococci022December 31, 20253,529% over the limit
Solids, total suspended631June 30, 201963% over the limit
Flow, in conduit or thru treatment plant1080
Oil and grease050
Carbon, tot organic [TOC]330
BOD, 5-day, 20 deg. C200
Lead, total [as Pb]100
Benzene100
BTEX100

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES LA0112704.

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 LA0112704 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES LA0112704, held by ENTERGY LOUISIANA LLC for the ENTERGY LOUISIANA LLC - CALCASIEU PLANT in Sulphur, LA, which discharges to Moss Lake. The permit is listed as administratively continued, with a Minor Discharger class, 10 pollutants under a numeric limit, and 5 pollutants with an effluent exceedance. The subwatershed is Calcasieu River-Prien Lake (HUC 080802060303).