GULF COAST AUTHORITY

NPDES permit TX0057843 · Major POTW · administratively continued, expires 2026-07-26 · 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.

This permit expired on 2026-07-26 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

1values over a limit
0required values missing, on 0 form(s)
0of 21 forms filed late

Last period with anything received: 2026-07-31. Most often over: Enterococci (1).

Reporting

Reports are due about 26 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (192)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedDAILY AV <= 4233 lb/d all year
001Solids, total suspendedDAILY MX <= 13692 lb/d all year
001Oil & GreaseDAILY AV report only all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseDAILY AV <= 655 lb/d all year
001Oil & GreaseDAILY MX <= 1308 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY AV <= 262 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 902 lb/d all year
001Carbon, tot organic [TOC]DAILY AV report only all year
001Carbon, tot organic [TOC]DAILY MX report only all year
001Carbon, tot organic [TOC]DAILY AV <= 15167 lb/d all year
001Carbon, tot organic [TOC]DAILY MX <= 23000 lb/d all year
001Arsenic, total [as As]DAILY AV report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]DAILY AV <= 8.736 lb/d all year
001Arsenic, total [as As]DAILY MX <= 18.48 lb/d all year
001Chromium, total [as Cr]DAILY AV report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY AV <= 28.1 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 67.2 lb/d all year
001Copper, total [as Cu]DAILY AV report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY AV <= .9119 lb/d all year
001Copper, total [as Cu]DAILY MX <= 1.929 lb/d all year
001Iron, total [as Fe]DAILY AV <= 74.4 lb/d all year
001Iron, total [as Fe]DAILY MX <= 109 lb/d all year
001Zinc, total [as Zn]DAILY AV report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY AV <= 6.72 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 12.2 lb/d all year
001Carbon tetrachlorideDAILY AV <= .9496 lb/d all year
001Carbon tetrachlorideDAILY MX <= 2.008 lb/d all year
0011,2-DichloroethaneDAILY AV <= 4.05 lb/d all year
0011,2-DichloroethaneDAILY MX <= 12.57 lb/d all year
001ChloroformDAILY AV <= 1.25 lb/d all year
001ChloroformDAILY MX <= 2.74 lb/d all year
001TolueneDAILY AV <= 1.55 lb/d all year
001TolueneDAILY MX <= 4.77 lb/d all year
001BenzeneDAILY AV <= 2.2 lb/d all year
001BenzeneDAILY MX <= 8.1 lb/d all year
001AcenaphthyleneDAILY AV <= 1.31 lb/d all year
001AcenaphthyleneDAILY MX <= 3.52 lb/d all year
001AcenaphtheneDAILY AV <= 1.31 lb/d all year
001AcenaphtheneDAILY MX <= 3.52 lb/d all year
001AcrylonitrileDAILY AV <= 1.237 lb/d all year
001AcrylonitrileDAILY MX <= 2.618 lb/d all year
001AnthraceneDAILY AV <= 1.31 lb/d all year
001AnthraceneDAILY MX <= 3.52 lb/d all year
001Benzo[b]fluorantheneDAILY AV <= 1.37 lb/d all year
001Benzo[b]fluorantheneDAILY MX <= 3.64 lb/d all year
001Benzo[k]fluorantheneDAILY AV <= 1.31 lb/d all year
001Benzo[k]fluorantheneDAILY MX <= 3.52 lb/d all year
001Benzo[a]pyreneDAILY AV <= .003 lb/d all year
001Benzo[a]pyreneDAILY MX <= .006 lb/d all year
001ChlorobenzeneDAILY AV <= .89 lb/d all year
001ChlorobenzeneDAILY MX <= 1.67 lb/d all year
001ChryseneDAILY AV <= .9156 lb/d all year
001ChryseneDAILY MX <= 1.9372 lb/d all year
001Diethyl phthalateDAILY AV <= 4.83 lb/d all year
001Diethyl phthalateDAILY MX <= 12.1 lb/d all year
001Dimethyl phthalateDAILY AV <= 1.13 lb/d all year
001Dimethyl phthalateDAILY MX <= 2.8 lb/d all year
001EthylbenzeneDAILY AV <= 1.91 lb/d all year
001EthylbenzeneDAILY MX <= 6.44 lb/d all year
001FluorantheneDAILY AV <= 1.49 lb/d all year
001FluorantheneDAILY MX <= 4.05 lb/d all year
001FluoreneDAILY AV <= 1.31 lb/d all year
001FluoreneDAILY MX <= 3.52 lb/d all year
001HexachlorobutadieneDAILY AV <= .245 lb/d all year
001HexachlorobutadieneDAILY MX <= .52 lb/d all year
001HexachloroethaneDAILY AV <= 1.25 lb/d all year
001HexachloroethaneDAILY MX <= 3.22 lb/d all year
001Methyl chloride [Chloromethane]DAILY AV <= 5.12 lb/d all year
001Methyl chloride [Chloromethane]DAILY MX <= 11.32 lb/d all year
001Methylene chlorideDAILY AV <= 2.38 lb/d all year
001Methylene chlorideDAILY MX <= 5.3 lb/d all year
001NitrobenzeneDAILY AV <= 1.61 lb/d all year
001NitrobenzeneDAILY MX <= 4.05 lb/d all year
001PhenanthreneDAILY AV <= .4514 lb/d all year
001PhenanthreneDAILY MX <= .9551 lb/d all year
001PyreneDAILY AV <= 1.49 lb/d all year
001PyreneDAILY MX <= 3.99 lb/d all year
001TetrachloroethyleneDAILY AV <= 1.31 lb/d all year
001TetrachloroethyleneDAILY MX <= 3.34 lb/d all year
0011,1-DichloroethaneDAILY AV <= 1.31 lb/d all year
0011,1-DichloroethaneDAILY MX <= 3.52 lb/d all year
0011,1-DichloroethyleneDAILY AV <= .6613 lb/d all year
0011,1-DichloroethyleneDAILY MX <= 1.399 lb/d all year
0011,1,1-TrichloroethaneDAILY AV <= 1.25 lb/d all year
0011,1,1-TrichloroethaneDAILY MX <= 3.22 lb/d all year
0011,1,2-TrichloroethaneDAILY AV <= 1.25 lb/d all year
0011,1,2-TrichloroethaneDAILY MX <= 3.22 lb/d all year
001Benzo[a]anthraceneDAILY AV <= .028 lb/d all year
001Benzo[a]anthraceneDAILY MX <= .059 lb/d all year
0011,2-DichlorobenzeneDAILY AV <= 4.59 lb/d all year
0011,2-DichlorobenzeneDAILY MX <= 9.71 lb/d all year
0011,2-DichloropropaneDAILY AV <= 9.12 lb/d all year
0011,2-DichloropropaneDAILY MX <= 13.71 lb/d all year
001trans-1,2-DichloroethyleneDAILY AV <= 1.25 lb/d all year
001trans-1,2-DichloroethyleneDAILY MX <= 3.22 lb/d all year
0011,2,4-TrichlorobenzeneDAILY AV <= 4.05 lb/d all year
0011,2,4-TrichlorobenzeneDAILY MX <= 8.34 lb/d all year
0011,3-DichlorobenzeneDAILY AV <= 1.85 lb/d all year
0011,3-DichlorobenzeneDAILY MX <= 2.62 lb/d all year
0011,4-DichlorobenzeneDAILY AV <= .89 lb/d all year
0011,4-DichlorobenzeneDAILY MX <= 1.67 lb/d all year
0012-ChlorophenolDAILY AV <= 1.85 lb/d all year
0012-ChlorophenolDAILY MX <= 5.84 lb/d all year
0012-NitrophenolDAILY AV <= 2.44 lb/d all year
0012-NitrophenolDAILY MX <= 4.11 lb/d all year
0012,4-DichlorophenolDAILY AV <= 2.32 lb/d all year
0012,4-DichlorophenolDAILY MX <= 6.67 lb/d all year
0012,4-DimethylphenolDAILY AV <= 1.07 lb/d all year
0012,4-DimethylphenolDAILY MX <= 2.15 lb/d all year
0012,4-DinitrotolueneDAILY AV <= 6.73 lb/d all year
0012,4-DinitrotolueneDAILY MX <= 16.98 lb/d all year
0012,4-DinitrophenolDAILY AV <= 4.23 lb/d all year
0012,4-DinitrophenolDAILY MX <= 7.33 lb/d all year
0012,6-DinitrotolueneDAILY AV <= 15.2 lb/d all year
0012,6-DinitrotolueneDAILY MX <= 38.2 lb/d all year
0014-NitrophenolDAILY AV <= 4.29 lb/d all year
0014-NitrophenolDAILY MX <= 7.39 lb/d all year
0014,6-Dinitro-o-cresolDAILY AV <= 4.65 lb/d all year
0014,6-Dinitro-o-cresolDAILY MX <= 16.51 lb/d all year
001PhenolDAILY AV <= 1.05 lb/d all year
001PhenolDAILY MX <= 1.82 lb/d all year
001NaphthaleneDAILY AV <= 1.54 lb/d all year
001NaphthaleneDAILY MX <= 4.14 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY AV <= 6.14 lb/d all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 16.6 lb/d all year
001Di-n-butyl phthalateDAILY AV <= 1.61 lb/d all year
001Di-n-butyl phthalateDAILY MX <= 3.4 lb/d all year
001Vinyl chlorideDAILY AV <= 6.2 lb/d all year
001Vinyl chlorideDAILY MX <= 15.97 lb/d all year
001TrichloroethyleneDAILY AV <= 1.04 lb/d all year
001TrichloroethyleneDAILY MX <= 2.67 lb/d all year
001HexachlorobenzeneDAILY AV <= .0008 lb/d all year
001HexachlorobenzeneDAILY MX <= .0016 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= 15.7 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 31 MGD all year
001Chlorine, free availableDAILY AV <= .721 lb/d all year
001Chlorine, free availableDAILY MX <= 1.8 lb/d all year
0011,3-DichloropropyleneDAILY AV <= 1.73 lb/d all year
0011,3-DichloropropyleneDAILY MX <= 2.62 lb/d all year
001EnterococciDAILY AV <= 35 CFU/100mL all year
001EnterococciDAILY MX <= 104 CFU/100mL all year
001PyridineDAILY AV <= 1.31 lb/d all year
001PyridineDAILY MX <= 3.78 lb/d all year
001AnilineDAILY AV <= .92 lb/d all year
001AnilineDAILY MX <= 1.47 lb/d all year
001p-CresolDAILY AV <= .86 lb/d all year
001p-CresolDAILY MX <= 1.47 lb/d all year
001Benzoic acids, totalDAILY AV <= 4.34 lb/d all year
001Benzoic acids, totalDAILY MX <= 7.27 lb/d all year
001.alpha.-TerpineolDAILY AV <= .98 lb/d all year
001.alpha.-TerpineolDAILY MX <= 2.02 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 2620 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 5896 lb/d all year
001ChloroethaneDAILY AV <= 6.2 lb/d all year
001ChloroethaneDAILY MX <= 15.97 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 Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia)7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia)MO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO 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 Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP 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