Clean Water Act discharge permit · NPDES LA0003191

ENTERGY LOUISIANA, LLC- LITTLE GYPSY PLANT, Montz, LA: NPDES LA0003191 discharge permit, effluent exceedances, inspections, penalties

Name: ENTERGY LOUISIANA, LLC- LITTLE GYPSY PLANT, NPDES LA0003191: Clean Water Act discharge permit record
Creator: Velarion Records
License: https://www.usa.gov/government-works

EffectivePermit status
MajorDischarger class
21Pollutants under a numeric limit
5Pollutants with an effluent exceedance

ENTERGY LOUISIANA, LLC- LITTLE GYPSY PLANT, held by Entergy Louisiana, LLC- Little Gypsy Plant, holds NPDES permit LA0003191, which discharges to 0701. EPA’s file records it issued September 7, 2016 and expiring September 6, 2021. 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	ENTERGY LOUISIANA, LLC- LITTLE GYPSY PLANT
Permittee as filed	Entergy Louisiana, LLC- Little Gypsy Plant
NPDES ID	LA0003191
Permit status	Effective
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Not a publicly owned treatment works
Issued	September 7, 2016
Expiration date	September 6, 2021
Address	Montz, LA 70068
Receiving water	0701
Subwatershed	Claiborne Island (HUC 080701000105)
Other EPA IDs (FRS)	RCRA handler LAD000757476; ICIS-AIR source LA0000002208900009

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

23Pollutants on file
21Under a numeric limit
21With a violation of any kind
5With 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	7	14	3	September 30, 2019	100% over the limit
pH	14	11	3	December 31, 2009
Oil and grease	0	4	2	August 31, 2014	25% over the limit
Oil & Grease	11	6	1	June 30, 2026	65% over the limit
Carbon, tot organic [TOC]	8	4	1	March 31, 2017	5% over the limit
Flow, in conduit or thru treatment plant	20	36	0
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex	2	6	0
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas	2	6	0
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex	2	6	0
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas	2	6	0
Coef Of Var Static Renewal 48Hr Acute D. pulex	1	5	0
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas	1	5	0
Whole effluent toxicity - retest #2	4	2	0
Temperature, water deg. fahrenheit	2	2	0
Copper, total [as Cu]	2	2	0
Iron, total [as Fe]	2	2	0
Chlorine, total residual	2	2	0
Lead, total [as Pb]	1	1	0
Benzene	1	1	0
BTEX	1	1	0
Cooling Water Intake Velocity	0	1	0
Whole effluent toxicity - retest #1	4	0	0
Whole Effluent Toxicity - 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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES LA0003191.

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.

Watch this permit

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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 LA0003191 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This page is a Velarion Records entry for NPDES permit LA0003191, held by Entergy Louisiana, LLC- Little Gypsy Plant in Montz, LA, covering its Clean Water Act discharge permit status, effluent exceedances, inspections and penalties. The listed figures are 21 for discharger class, 5 pollutants under a numeric limit, and 5 pollutants with an effluent exceedance, with the permit shown as effective and classed as a Major Discharger.