SOUTHWESTERN ELECTRIC POWER COMPANY-JOHN W TURK, JR POWER PLANT

NPDES permit AR0051136 · Major NON-POTW · administratively continued, expires 2023-12-31 · 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 2023-12-31 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 101 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 (134)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 98.6 deg F all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Oil & GreaseMO AVG <= 180 lb/d all year
001Oil & GreaseDAILY MX <= 270 lb/d all year
001Chloride [as Cl]MO AVG <= 250 mg/L all year
001Chloride [as Cl]DAILY MX <= 375 mg/L all year
001Chloride [as Cl]MO AVG <= 4503 lb/d all year
001Chloride [as Cl]DAILY MX <= 6755 lb/d all year
001Zinc, total recoverableMO AVG <= .652 mg/L all year
001Zinc, total recoverableDAILY MX <= 1 mg/L all year
001Zinc, total recoverableMO AVG <= 11.6 lb/d all year
001Zinc, total recoverableDAILY MX <= 18 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 <= 3.6 lb/d all year
001Chromium, total recoverableDAILY MX <= 3.6 lb/d 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 < .1 mg/L all year
001Chlorine, free availableMO AVG <= .2 mg/L all year
001Chlorine, free availableDAILY MX <= .5 mg/L all year
001Chlorine, free availableMO AVG <= .3 lb/d all year
001Chlorine, free availableDAILY MX <= .75 lb/d all year
001Solids, total dissolvedMO AVG <= 2500 mg/L all year
001Solids, total dissolvedDAILY MX <= 3750 mg/L all year
001Solids, total dissolvedMO AVG <= 45036 lb/d all year
001Solids, total dissolvedDAILY MX <= 67554 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
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Solids, total suspendedMO AVG <= 30 mg/L all year
101Solids, total suspendedDAILY MX <= 50 mg/L all year
101Solids, total suspendedMO AVG <= 291.2 lb/d all year
101Solids, total suspendedDAILY MX <= 483.8 lb/d all year
101Oil & GreaseMO AVG <= 15 mg/L all year
101Oil & GreaseDAILY MX <= 20 mg/L all year
101Oil & GreaseMO AVG <= 144.4 lb/d all year
101Oil & GreaseDAILY MX <= 193.7 lb/d all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
201pHMINIMUM >= 6 SU all year
201pHMAXIMUM <= 9 SU all year
201Solids, total suspendedMO AVG <= 30 mg/L all year
201Solids, total suspendedDAILY MX <= 50 mg/L all year
201Oil & GreaseMO AVG <= 15 mg/L all year
201Oil & GreaseDAILY MX <= 20 mg/L all year
201Flow, in conduit or thru treatment plantMO AVG report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year
301pHMINIMUM >= 6 SU all year
301pHMAXIMUM <= 9 SU all year
301Solids, total suspendedMO AVG <= 30 mg/L all year
301Solids, total suspendedDAILY MX <= 50 mg/L all year
301Solids, total suspendedMO AVG <= 291.2 lb/d all year
301Solids, total suspendedDAILY MX <= 483.8 lb/d all year
301Oil & GreaseMO AVG <= 15 mg/L all year
301Oil & GreaseDAILY MX <= 20 mg/L all year
301Oil & GreaseMO AVG <= 144.4 lb/d all year
301Oil & GreaseDAILY MX <= 193.7 lb/d 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
401pHMINIMUM >= 6 SU all year
401pHMAXIMUM <= 9 SU all year
401Solids, total suspendedMO AVG <= 30 mg/L all year
401Solids, total suspendedDAILY MX <= 100 mg/L all year
401Oil & GreaseMO AVG <= 15 mg/L all year
401Oil & GreaseDAILY MX <= 20 mg/L all year
401Flow, in conduit or thru treatment plantMO AVG report only all year
401Flow, in conduit or thru treatment plantDAILY MX report only all year
501pHMINIMUM >= 6 SU all year
501pHMAXIMUM <= 9 SU all year
501Solids, total suspendedMO AVG <= 30 mg/L all year
501Solids, total suspendedDAILY MX <= 100 mg/L all year
501Oil & GreaseMO AVG <= 15 mg/L all year
501Oil & GreaseDAILY MX <= 20 mg/L all year
501Flow, in conduit or thru treatment plantMO AVG report only all year
501Flow, in conduit or thru treatment plantDAILY MX report only all year
601pHMINIMUM >= 6 SU all year
601pHMAXIMUM <= 9 SU all year
601Solids, total suspendedMO AVG <= 30 mg/L all year
601Solids, total suspendedDAILY MX <= 100 mg/L all year
601Oil & GreaseMO AVG <= 15 mg/L all year
601Oil & GreaseDAILY MX <= 20 mg/L all year
601Flow, in conduit or thru treatment plantMO AVG report only all year
601Flow, in conduit or thru treatment plantDAILY MX report only all year
TX1Whole effluent toxicity - retest #17 DA AVG report only all year
TX1Whole effluent toxicity - retest #27 DA AVG report only all year
TX1WET, sublethal retest #17 DA AVG report only all year
TX1WET, sublethal retest #17 DA AVG report only all year
TX1WET, sublethal retest #27 DA AVG report only all year
TX1WET, sublethal retest #27 DA AVG report only all year
TX1Whole Effluent Toxicity - Retest #37 DA AVG report only all year
TX1Whole Effluent Toxicity, Sub-Lethal Retest #37 DA AVG report only all year
TX1Whole Effluent Toxicity, Sub-Lethal Retest #37 DA AVG report only all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX2Whole effluent toxicity - retest #17 DA AVG report only all year
TX2Whole effluent toxicity - retest #27 DA AVG report only all year
TX2WET, sublethal retest #17 DA AVG report only all year
TX2WET, sublethal retest #27 DA AVG report only all year
TX2Whole Effluent Toxicity - Retest #37 DA AVG report only all year
TX2Whole Effluent Toxicity, Sub-Lethal Retest #37 DA AVG report only all year
TX2Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX2Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX2Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX2Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX2NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX2NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX2NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX2NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX2Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX2Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA AVG 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