EXXON MOBIL CORPORATION

NPDES permit TX0089125 · Major NON-POTW · effective, expires 2031-03-26 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 17 forms filed late

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

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 (147)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
001Oxygen demand, chem. [high level] [COD]DAILY AV <= 11259 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 28530 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 1518 lb/d all year
001Solids, total suspendedDAILY MX <= 4346 lb/d all year
001Oil & GreaseDAILY AV <= 628 lb/d all year
001Oil & GreaseDAILY MX <= 837 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 126 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 252 lb/d all year
001Sulfate, total [as SO4]DAILY MX <= 475 mg/L all year
001Sulfate, total [as SO4]DAILY AV <= 7904 lb/d all year
001Carbon tetrachlorideDAILY AV <= 3.73 lb/d all year
001Carbon tetrachlorideDAILY MX <= 9.98 lb/d all year
0011,2-DichloroethaneDAILY AV <= 4.73 lb/d all year
0011,2-DichloroethaneDAILY MX <= 15.07 lb/d all year
001ChloroformDAILY AV <= 2.91 lb/d all year
001ChloroformDAILY MX <= 8.53 lb/d all year
001TolueneDAILY AV <= .735 lb/d all year
001TolueneDAILY MX <= 1.94 lb/d all year
001BenzeneDAILY AV <= 1.5 lb/d all year
001BenzeneDAILY MX <= 3.52 lb/d all year
001AcenaphthyleneDAILY AV <= .499 lb/d all year
001AcenaphthyleneDAILY MX <= 1.23 lb/d all year
001AcenaphtheneDAILY AV <= .499 lb/d all year
001AcenaphtheneDAILY MX <= 1.23 lb/d all year
001AcrylonitrileDAILY AV <= 2.47 lb/d all year
001AcrylonitrileDAILY MX <= 6.09 lb/d all year
001AnthraceneDAILY AV <= .499 lb/d all year
001AnthraceneDAILY MX <= 1.23 lb/d all year
001Benzo[b]fluorantheneDAILY AV <= .525 lb/d all year
001Benzo[b]fluorantheneDAILY MX <= 1.26 lb/d all year
001Benzo[k]fluorantheneDAILY AV <= .499 lb/d all year
001Benzo[k]fluorantheneDAILY MX <= 1.23 lb/d all year
001Benzo[a]pyreneDAILY AV <= .00018 lb/d all year
001Benzo[a]pyreneDAILY MX <= .0004 lb/d all year
001ChlorobenzeneDAILY AV <= 3.73 lb/d all year
001ChlorobenzeneDAILY MX <= 9.98 lb/d all year
001ChryseneDAILY AV <= .287 lb/d all year
001ChryseneDAILY MX <= .607 lb/d all year
001Diethyl phthalateDAILY AV <= 1.21 lb/d all year
001Diethyl phthalateDAILY MX <= 2.97 lb/d all year
001Dimethyl phthalateDAILY AV <= .499 lb/d all year
001Dimethyl phthalateDAILY MX <= 1.23 lb/d all year
001EthylbenzeneDAILY AV <= 3.73 lb/d all year
001EthylbenzeneDAILY MX <= 9.98 lb/d all year
001FluorantheneDAILY AV <= .578 lb/d all year
001FluorantheneDAILY MX <= 1.42 lb/d all year
001FluoreneDAILY AV <= .499 lb/d all year
001FluoreneDAILY MX <= 1.23 lb/d all year
001HexachlorobutadieneDAILY AV <= .0251 lb/d all year
001HexachlorobutadieneDAILY MX <= .0527 lb/d all year
001HexachloroethaneDAILY AV <= .266 lb/d all year
001HexachloroethaneDAILY MX <= .561 lb/d all year
001Methyl chloride [Chloromethane]DAILY AV <= 2.89 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 7.74 lb/d all year
001Methylene chlorideDAILY AV <= .945 lb/d all year
001Methylene chlorideDAILY MX <= 4.46 lb/d all year
001NitrobenzeneDAILY AV <= 58.73 lb/d all year
001NitrobenzeneDAILY MX <= 168.1 lb/d all year
001PhenanthreneDAILY AV <= .499 lb/d all year
001PhenanthreneDAILY MX <= 1.23 lb/d all year
001PyreneDAILY AV <= .525 lb/d all year
001PyreneDAILY MX <= 1.26 lb/d all year
001TetrachloroethyleneDAILY AV <= 1.37 lb/d all year
001TetrachloroethyleneDAILY MX <= 4.31 lb/d all year
0011,1-DichloroethaneDAILY AV <= .578 lb/d all year
0011,1-DichloroethaneDAILY MX <= 1.55 lb/d all year
0011,1-DichloroethyleneDAILY AV <= .578 lb/d all year
0011,1-DichloroethyleneDAILY MX <= 1.58 lb/d all year
0011,1,1-TrichloroethaneDAILY AV <= .578 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= 1.55 lb/d all year
0011,1,2-TrichloroethaneDAILY AV <= .84 lb/d all year
0011,1,2-TrichloroethaneDAILY MX <= 3.33 lb/d all year
001Benzo[a]anthraceneDAILY AV <= .0029 lb/d all year
001Benzo[a]anthraceneDAILY MX <= .006 lb/d all year
0011,2-DichlorobenzeneDAILY AV <= 5.15 lb/d all year
0011,2-DichlorobenzeneDAILY MX <= 20.85 lb/d all year
0011,2-DichloropropaneDAILY AV <= 5.15 lb/d all year
0011,2-DichloropropaneDAILY MX <= 20.85 lb/d all year
001trans-1,2-DichloroethyleneDAILY AV <= .656 lb/d all year
001trans-1,2-DichloroethyleneDAILY MX <= 1.73 lb/d all year
0011,2,4-TrichlorobenzeneDAILY AV <= 5.15 lb/d all year
0011,2,4-TrichlorobenzeneDAILY MX <= 20.85 lb/d all year
0011,3-DichlorobenzeneDAILY AV <= 3.73 lb/d all year
0011,3-DichlorobenzeneDAILY MX <= 9.98 lb/d all year
0011,4-DichlorobenzeneDAILY AV <= 3.73 lb/d all year
0011,4-DichlorobenzeneDAILY MX <= 9.98 lb/d all year
0012-NitrophenolDAILY AV <= 1.71 lb/d all year
0012-NitrophenolDAILY MX <= 6.06 lb/d all year
0012,4-DimethylphenolDAILY AV <= .499 lb/d all year
0012,4-DimethylphenolDAILY MX <= 1.23 lb/d all year
0012,4-DinitrophenolDAILY AV <= 31.69 lb/d all year
0012,4-DinitrophenolDAILY MX <= 112.7 lb/d all year
0014-NitrophenolDAILY AV <= 4.25 lb/d all year
0014-NitrophenolDAILY MX <= 15.12 lb/d all year
0014,6-Dinitro-o-cresolDAILY AV <= 2.05 lb/d all year
0014,6-Dinitro-o-cresolDAILY MX <= 7.27 lb/d all year
001PhenolDAILY AV <= .499 lb/d all year
001PhenolDAILY MX <= 1.23 lb/d all year
001NaphthaleneDAILY AV <= .499 lb/d all year
001NaphthaleneDAILY MX <= 1.23 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= .858 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 1.82 lb/d all year
001Di-n-butyl phthalateDAILY AV <= .525 lb/d all year
001Di-n-butyl phthalateDAILY MX <= 1.13 lb/d all year
001Vinyl chlorideDAILY AV <= 1.88 lb/d all year
001Vinyl chlorideDAILY MX <= 3.98 lb/d all year
001TrichloroethyleneDAILY AV <= .683 lb/d all year
001TrichloroethyleneDAILY MX <= 1.81 lb/d all year
001HexachlorobenzeneDAILY AV <= .00008 lb/d all year
001HexachlorobenzeneDAILY MX <= .0002 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= 5.013 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 13 MGD all year
0011,3-DichloropropyleneDAILY AV <= 5.15 lb/d all year
0011,3-DichloropropyleneDAILY MX <= 20.85 lb/d all year
001Solids, total dissolvedDAILY MX <= 1134 mg/L all year
001Solids, total dissolvedDAILY AV <= 18899 lb/d all year
0013,4-BenzofluorantheneDAILY AV <= .525 lb/d all year
0013,4-BenzofluorantheneDAILY MX <= 1.26 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 393 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 996 lb/d all year
001ChloroethaneDAILY AV <= 2.89 lb/d all year
001ChloroethaneDAILY MX <= 7.74 lb/d all year
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN 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