ENTERGY ARKANSAS, LLC - WHITE BLUFF PLANT

NPDES permit AR0036331 · Major NON-POTW · administratively continued, expires 2025-02-28 · 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 2025-02-28 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

0values over a limit
0required values missing, on 0 form(s)
0of 32 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).

Limits in force (67)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG <= 105 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Zinc, total recoverableMO AVG <= 1 mg/L all year
001Zinc, total recoverableDAILY MX <= 1 mg/L all year
001Zinc, total recoverableMO AVG <= 95.9 lb/d all year
001Zinc, total recoverableDAILY MX <= 244.4 lb/d all year
001Chromium, total recoverableMO AVG <= .2 mg/L all year
001Chromium, total recoverableDAILY MX <= .2 mg/L all year
001Chromium, total recoverableMO AVG <= 19.2 lb/d all year
001Chromium, total recoverableDAILY MX <= 48.9 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG <= 11.5 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 29.3 MGD all year
001Chlorine, free availableMO AVG <= .2 mg/L all year
001Chlorine, free availableDAILY MX <= .5 mg/L all year
001Chlorine, free availableMO AVG <= 1.6 lb/d all year
001Chlorine, free availableDAILY MX <= 10.2 lb/d all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 50 mg/L all year
002Oil & GreaseMO AVG <= 10 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Copper, total [as Cu]MO AVG <= 123.8 ug/L all year
002Copper, total [as Cu]DAILY MX <= 248.3 ug/L all year
002Iron, total [as Fe]MO AVG <= 1 mg/L all year
002Iron, total [as Fe]DAILY MX <= 1 mg/L all year
002RainfallDAILY MX report only 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
002E. coli30DA GEO <= 126 #/100mL May, Jun, Jul, Aug, Sep
002E. coli30DA GEO <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002E. coliDAILY MX <= 410 #/100mL May, Jun, Jul, Aug, Sep
002E. coliDAILY MX <= 2050 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1WET, sublethal retest #17 DA MIN report only all year
TX1WET, sublethal retest #27 DA MIN report only all year
TX1Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX1Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX2Whole effluent toxicity - retest #17 DA MIN report only all year
TX2Whole effluent toxicity - retest #27 DA MIN report only all year
TX2WET, sublethal retest #17 DA MIN report only all year
TX2WET, sublethal retest #27 DA MIN report only all year
TX2Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX2Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX2Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX2Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN 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