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Entergy Louisiana LLC - Waterford 1 & 2 Electric Generating Plant

Electric Services, major discharger, Killona, Louisiana. NPDES permit LA0007439, in force until Oct 1, 2028. Last 12 months: no values over a limit, 1 of 120 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (5 values), outfall 001 form DA quarterly (11 values), outfall 001 form PI quarterly (11 values), outfall 002 form A monthly (8 values), outfall 002 form Q quarterly (1 value), outfall 003 form Q quarterly (9 values), and 10 more forms
Renewal application due
Apr 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 126 reports late

Limits in force (109)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly average≤ 110 deg Fall year001
Temperature, water deg. fahrenheitinstantaneous maximum≤ 115 deg Fall year001
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #148-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #248-hour minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .2 mg/Lall year001
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #348-hour minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all year001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all year001
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all year001
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all year001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all year001
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all year001
Coef Of Var Static Renewal 48Hr Acute D. pulexmaximumreport only (%)all year001
Coef Of Var Static Renewal 48Hr Acute Pimephales promelasmaximumreport only (%)all year001
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 100 mg/Lall year002
Oil & Greasemonthly average≤ 15 mg/Lall year002
Oil & Greasedaily maximum≤ 20 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
pHinstantaneous minimumreport only (SU)all year003
pHinstantaneous maximumreport only (SU)all year003
Solids, total suspendedmonthly averagereport only (mg/L)all year003
Solids, total suspendeddaily maximumreport only (mg/L)all year003
Oil & Greasemonthly averagereport only (mg/L)all year003
Oil & Greasedaily maximumreport only (mg/L)all year003
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
pHinstantaneous minimumreport only (SU)all year004
pHinstantaneous maximumreport only (SU)all year004
Solids, total suspendedmonthly averagereport only (mg/L)all year004
Solids, total suspendeddaily maximumreport only (mg/L)all year004
Oil & Greasemonthly averagereport only (mg/L)all year004
Oil & Greasedaily maximumreport only (mg/L)all year004
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
pHinstantaneous minimumreport only (SU)all year005
pHinstantaneous maximumreport only (SU)all year005
Solids, total suspendedmonthly averagereport only (mg/L)all year005
Solids, total suspendeddaily maximumreport only (mg/L)all year005
Oil & Greasemonthly averagereport only (mg/L)all year005
Oil & Greasedaily maximumreport only (mg/L)all year005
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHinstantaneous minimum≥ 6 SUall year006
pHinstantaneous maximum≤ 9 SUall year006
Solids, total suspendedmonthly average≤ 30 mg/Lall year006
Solids, total suspendeddaily maximum≤ 100 mg/Lall year006
Oil & Greasemonthly average≤ 15 mg/Lall year006
Oil & Greasedaily maximum≤ 20 mg/Lall year006
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Solids, total suspended, non-algalmonthly average≤ 30 mg/LMay–Sep006
Solids, total suspended, non-algaldaily maximum≤ 100 mg/LMay–Sep006
pHinstantaneous minimum≥ 6 SUall year007
pHinstantaneous maximum≤ 9 SUall year007
Solids, total suspendedmonthly average≤ 30 mg/Lall year007
Solids, total suspendeddaily maximum≤ 100 mg/Lall year007
Oil & Greasemonthly average≤ 15 mg/Lall year007
Oil & Greasedaily maximum≤ 20 mg/Lall year007
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year007
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
Solids, total suspended, non-algalmonthly average≤ 30 mg/LMay–Sep007
Solids, total suspended, non-algaldaily maximum≤ 100 mg/LMay–Sep007
pHinstantaneous minimum≥ 6 SUall year101
pHinstantaneous maximum≤ 9 SUall year101
Solids, total suspendedmonthly average≤ 30 mg/Lall year101
Solids, total suspendeddaily maximum≤ 100 mg/Lall year101
Oil & Greasemonthly average≤ 15 mg/Lall year101
Oil & Greasedaily maximum≤ 20 mg/Lall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
pHinstantaneous minimum≥ 6 SUall year108
pHinstantaneous maximum≤ 9 SUall year108
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year108
Lead, total [as Pb]daily maximum≤ 50 ug/Lall year108
Benzenedaily maximum≤ 50 ug/Lall year108
BTEXdaily maximum≤ 250 ug/Lall year108
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year108
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year108
Copper, total [as Cu]monthly average≤ 1 mg/Lall year201
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year201
Iron, total [as Fe]monthly average≤ 1 mg/Lall year201
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearIT01
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearIT01

How strict are these limits?

Cited limits by parameter: Louisiana's rules and the federal ones.

Same industry: the 29 Electric Services permits in Louisiana.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0007439 · MCP: https://passage-data.com/mcp