OG&E-Muskogee 4, 5, & 6

NPDES permit OK0034657 · Major NON-POTW · effective, expires 2028-10-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 72 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among OK permits in EPA's filings — check your permit).

Limits in force (52)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Oxidants, total residualINST MAX <= .099 mg/L 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
001E. coliGEO MEAN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliGEO MEAN <= 630 MPN/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliDAILY MN >= 406 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 2030 MPN/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
0A1pHMINIMUM >= 6 SU all year
0A1pHMAXIMUM <= 9 SU all year
0A1Oxidants, free availableMO AVG <= .2 mg/L all year
0A1Oxidants, free availableDAILY MX <= .5 mg/L all year
0A1Oxidants, free availableMO AVG report only all year
0A1Oxidants, free availableDAILY MX report only all year
0A1Flow, in conduit or thru treatment plantMO AVG report only all year
0A1Flow, in conduit or thru treatment plantDAILY MX report only all year
0B1pHMINIMUM >= 6 SU all year
0B1pHMAXIMUM <= 9 SU all year
0B1Solids, total suspendedMO AVG <= 30 mg/L all year
0B1Solids, total suspendedDAILY MX <= 100 mg/L all year
0B1Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
0B1Oil and grease, hexane extr methodDAILY MX <= 20 mg/L all year
0B1Flow, in conduit or thru treatment plantMO AVG report only all year
0B1Flow, in conduit or thru treatment plantDAILY MX report only all year
0C1pHMINIMUM >= 6 SU all year
0C1pHMAXIMUM <= 9 SU all year
0C1Oxidants, free availableMO AVG <= .2 mg/L all year
0C1Oxidants, free availableDAILY MX <= .5 mg/L all year
0C1Oxidants, free availableMO AVG report only all year
0C1Oxidants, free availableDAILY MX report only all year
0C1Flow, in conduit or thru treatment plantMO AVG report only all year
0C1Flow, in conduit or thru treatment plantDAILY MX report only all year
0E1BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
0E1BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
0E1Solids, total suspendedMO AVG <= 30 mg/L all year
0E1Solids, total suspendedDAILY MX <= 45 mg/L all year
0E1Flow, in conduit or thru treatment plantMO AVG report only all year
0E1Flow, in conduit or thru treatment plantDAILY MX report only all year
B1ApHMINIMUM >= 6 SU all year
B1ApHMAXIMUM <= 9 SU all year
B1ASolids, total suspendedDAILY MX <= 50 mg/L all year
B1AFlow, in conduit or thru treatment plantMO AVG report only all year
B1AFlow, in conduit or thru treatment plantDAILY MX report only all year
TX1Whole effluent toxicity - retest #148HR MIN report only all year
TX1Whole effluent toxicity - retest #248HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex48HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1%Mortality Static Renewal 48Hr Acute Daphnia Pulex48HR MIN report only all year
TX1% Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C48HR 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