Entergy Louisiana, LLC- Little Gypsy Plant

NPDES permit LA0003191 · Major NON-POTW · administratively continued, expires 2023-11-14 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2023-11-14 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
0of 146 forms filed late

Last period with anything received: 2026-08-31. Most often over: Oil & Grease (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among LA permits in EPA's filings — check your permit).

Limits in force (125)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG <= 112.7 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 116 deg F all year
001Whole effluent toxicity - retest #148HR MIN report only all year
001Whole effluent toxicity - retest #148HR MIN report only all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #248HR MIN report only all year
001Whole effluent toxicity - retest #248HR MIN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .2 mg/L all year
001Chlorine, total residualDAILY MX <= 130 lb/d all year
001Whole Effluent Toxicity - Retest #348HR MIN report only all year
001Whole Effluent Toxicity - Retest #348HR MIN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
001Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
001LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
001LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
001NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
001NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
001NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
001NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
001Coef Of Var Static Renewal 48Hr Acute D. pulexMAXIMUM report only all year
001Coef Of Var Static Renewal 48Hr Acute Pimephales promelasMAXIMUM report only all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 100 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
006pHINST MIN >= 6 SU all year
006pHINST MAX <= 9 SU all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007pHINST MIN >= 6 SU all year
007pHINST MAX <= 9 SU all year
007Solids, total suspendedDAILY MX <= 90 mg/L all year
007Solids, total suspendedDAILY MX <= 90 mg/L all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
007Lead, total [as Pb]DAILY MX <= 50 ug/L all year
007BenzeneDAILY MX <= 50 ug/L all year
007BTEXDAILY MX <= 250 ug/L all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
008pHINST MIN >= 6 SU all year
008pHINST MAX <= 9 SU all year
008Chromium, total [as Cr]MO AVG <= .2 mg/L all year
008Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
008Zinc, total [as Zn]MO AVG <= 1 mg/L all year
008Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
008Chlorine, free availableMO AVG <= .2 mg/L all year
008Chlorine, free availableDAILY MX <= .5 mg/L all year
009pHINST MIN >= 6 SU all year
009pHINST MAX <= 9 SU all year
009Solids, total suspendedMO AVG <= 30 mg/L all year
009Solids, total suspendedDAILY MX <= 100 mg/L all year
009Oil & GreaseMO AVG <= 15 mg/L all year
009Oil & GreaseDAILY MX <= 20 mg/L all year
009Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
108Solids, total suspendedMO AVG <= 30 mg/L all year
108Solids, total suspendedDAILY MX <= 100 mg/L all year
108Oil & GreaseMO AVG <= 15 mg/L all year
108Oil & GreaseDAILY MX <= 20 mg/L all year
108Flow, in conduit or thru treatment plantMO AVG report only all year
108Flow, in conduit or thru treatment plantDAILY MX report only all year
208Solids, total suspendedMO AVG <= 30 mg/L all year
208Solids, total suspendedDAILY MX <= 100 mg/L all year
208Oil & GreaseMO AVG <= 15 mg/L all year
208Oil & GreaseDAILY MX <= 20 mg/L all year
208Flow, in conduit or thru treatment plantMO AVG report only all year
208Flow, in conduit or thru treatment plantDAILY MX report only all year
211pHINST MIN >= 6 SU all year
211pHINST MAX <= 9 SU all year
211Solids, total suspendedMO AVG <= 30 mg/L all year
211Solids, total suspendedDAILY MX <= 100 mg/L all year
211Oil & GreaseMO AVG <= 15 mg/L all year
211Oil & GreaseDAILY MX <= 20 mg/L all year
211Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
211Flow, in conduit or thru treatment plantMO AVG report only all year
211Flow, in conduit or thru treatment plantDAILY MX report only all year
221Oil & GreaseMO AVG <= 15 mg/L all year
221Oil & GreaseDAILY MX <= 20 mg/L all year
221Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
221Flow, in conduit or thru treatment plantMO AVG report only all year
221Flow, in conduit or thru treatment plantDAILY MX report only all year
301pHINST MIN >= 6 SU all year
301pHINST MAX <= 9 SU all year
301Solids, total suspendedMO AVG <= 30 mg/L all year
301Solids, total suspendedDAILY MX <= 100 mg/L all year
301Oil & GreaseMO AVG <= 15 mg/L all year
301Oil & GreaseDAILY MX <= 20 mg/L all year
301Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
301Flow, in conduit or thru treatment plantMO AVG report only all year
301Flow, in conduit or thru treatment plantDAILY MX report only all year
311Oxygen demand, chem. [high level] [COD]MO AVG <= 200 mg/L all year
311Oxygen demand, chem. [high level] [COD]DAILY MX <= 300 mg/L all year
311Copper, total [as Cu]MO AVG <= 1 mg/L all year
311Copper, total [as Cu]DAILY MX <= 1 mg/L all year
311Iron, total [as Fe]MO AVG <= 1 mg/L all year
311Iron, total [as Fe]DAILY MX <= 1 mg/L all year
311Flow, in conduit or thru treatment plantMO AVG report only all year
311Flow, in conduit or thru treatment plantDAILY MX report only all year
EQTFlow, in conduit or thru treatment plantMO AVG report only all year
EQTFlow, in conduit or thru treatment plantDAILY MX report only all year
EQTCooling Water Intake VelocityMO AVG report only all year
EQTCooling Water Intake VelocityDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states