NRG TEXAS POWER LLC

NPDES permit TX0082651 · Major NON-POTW · effective, expires 2027-04-29 · 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.

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

4values over a limit
0required values missing, on 0 form(s)
0of 103 forms filed late

Last period with anything received: 2026-08-31. Most often over: Selenium, total [as Se] (4).

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (129)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 93 deg F all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 100 mg/L all year
001Oil & GreaseDAILY AV <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 20 mg/L all year
001Copper, total [as Cu]DAILY AV report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Selenium, total [as Se]DAILY AV <= .00448 mg/L all year
001Selenium, total [as Se]DAILY MX <= .00949 mg/L all year
001Selenium, total [as Se]DAILY AV <= .086 lb/d all year
001Selenium, total [as Se]DAILY MX <= .182 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX <= 2.304 MGD all year
001Chlorine, free availableDAILY AV <= .2 mg/L all year
001Chlorine, free availableDAILY MX <= .5 mg/L all year
002Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 50 mg/L all year
002Oil & GreaseDAILY AV <= 15 mg/L all year
002Oil & GreaseDAILY MX <= 20 mg/L all year
002Selenium, total [as Se]DAILY AV <= .0168 mg/L all year
002Selenium, total [as Se]DAILY MX <= .0356 mg/L all year
002Selenium, total [as Se]DAILY AV <= .029 lb/d all year
002Selenium, total [as Se]DAILY MX <= .061 lb/d all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY AV <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 100 mg/L all year
003Oil & GreaseDAILY AV <= 15 mg/L all year
003Oil & GreaseDAILY MX <= 20 mg/L all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX <= .51 MGD all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspendedDAILY AV <= 30 mg/L all year
004Solids, total suspendedDAILY MX <= 100 mg/L all year
004Oil & GreaseDAILY AV <= 15 mg/L all year
004Oil & GreaseDAILY MX <= 20 mg/L all year
004Selenium, total [as Se]DAILY AV <= .00448 mg/L all year
004Selenium, total [as Se]DAILY MX <= .00949 mg/L all year
004Selenium, total [as Se]DAILY AV <= .016 lb/d all year
004Selenium, total [as Se]DAILY MX <= .034 lb/d all year
004Flow, in conduit or thru treatment plantDAILY AV report only all year
004Flow, in conduit or thru treatment plantDAILY MX <= .432 MGD all year
004Solids, total dissolvedDAILY MX <= 868 mg/L all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Solids, total suspendedDAILY AV <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 100 mg/L all year
005Oil & GreaseDAILY AV <= 15 mg/L all year
005Oil & GreaseDAILY MX <= 20 mg/L all year
005Copper, total [as Cu]DAILY AV <= .0197 mg/L all year
005Copper, total [as Cu]DAILY MX <= .0416 mg/L all year
005Iron, total [as Fe]DAILY AV <= 1 mg/L all year
005Iron, total [as Fe]DAILY MX <= 1 mg/L all year
005Selenium, total [as Se]DAILY AV <= .00448 mg/L all year
005Selenium, total [as Se]DAILY MX <= .00949 mg/L all year
005Selenium, total [as Se]DAILY AV <= .0081 lb/d all year
005Selenium, total [as Se]DAILY MX <= .017 lb/d all year
005Flow, in conduit or thru treatment plantDAILY AV report only all year
005Flow, in conduit or thru treatment plantDAILY MX <= .216 MGD all year
006Oxygen, dissolved [DO]MO MIN >= 4 mg/L all year
006BOD, 5-day, 20 deg. CDAILY AV <= 10 mg/L all year
006BOD, 5-day, 20 deg. CDAILY MX <= 25 mg/L all year
006BOD, 5-day, 20 deg. CDAILY AV <= 5 lb/d all year
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedDAILY AV <= 15 mg/L all year
006Solids, total suspendedDAILY MX <= 40 mg/L all year
006Solids, total suspendedDAILY AV <= 7.5 lb/d all year
006Flow, in conduit or thru treatment plantDAILY AV <= .06 MGD all year
006Flow, in conduit or thru treatment plantDAILY MX <= .09 MGD all year
006Chlorine, total residualMO MIN >= 1 mg/L all year
006Chlorine, total residualMO MAX <= 4 mg/L all year
006E. coliDAILY AV <= 126 CFU/100mL all year
006E. coliDAILY MX <= 399 CFU/100mL all year
007Oxygen, dissolved [DO]MO MIN >= 4 mg/L all year
007BOD, 5-day, 20 deg. CDAILY AV <= 10 mg/L all year
007BOD, 5-day, 20 deg. CDAILY MX <= 25 mg/L all year
007BOD, 5-day, 20 deg. CDAILY AV <= .25 lb/d all year
007pHMINIMUM >= 6 SU all year
007pHMAXIMUM <= 9 SU all year
007Solids, total suspendedDAILY AV <= 15 mg/L all year
007Solids, total suspendedDAILY MX <= 40 mg/L all year
007Solids, total suspendedDAILY AV <= .38 lb/d all year
007Flow, in conduit or thru treatment plantDAILY AV <= .003 MGD all year
007Flow, in conduit or thru treatment plantDAILY MX <= .006 MGD all year
007Chlorine, total residualMO MIN >= 1 mg/L all year
007Chlorine, total residualMO MAX <= 4 mg/L all year
007E. coliDAILY AV <= 126 CFU/100mL all year
007E. coliDAILY MX <= 399 CFU/100mL all year
008pHMINIMUM >= 6 SU all year
008pHMAXIMUM <= 9 SU all year
008Solids, total suspendedDAILY AV <= 30 mg/L all year
008Solids, total suspendedDAILY MX <= 100 mg/L all year
008Oil & GreaseDAILY AV <= 15 mg/L all year
008Oil & GreaseDAILY MX <= 20 mg/L all year
008Selenium, total [as Se]DAILY AV <= .0168 mg/L all year
008Selenium, total [as Se]DAILY MX <= .0356 mg/L all year
008Selenium, total [as Se]DAILY AV <= .01 lb/d all year
008Selenium, total [as Se]DAILY MX <= .02 lb/d all year
008Flow, in conduit or thru treatment plantDAILY AV report only all year
008Flow, in conduit or thru treatment plantDAILY MX <= .072 MGD all year
TX1Whole effluent toxicity - retest #148HR MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #248HR MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
TX1LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex48HR MIN report only all year
TX1LOAEC Lethal Static Renewal 48HR Acute Daphnia pulexMO AV MN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute D. PulexSINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Pimephales promelasSINGSAMP 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