ECO SERVICES OPERATIONS CORP

NPDES permit TX0007072 · Major NON-POTW · effective, expires 2029-10-25 · 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 45 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (289)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY AV <= 100 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001BOD, 5-day, 20 deg. CDAILY AV <= 60 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 150 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY AV <= 425 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 1064 lb/d all year
001pHMINIMUM >= 5 SU all year
001pHMAXIMUM <= 11 SU all year
001Solids, total suspendedDAILY AV <= 132 lb/d all year
001Solids, total suspendedDAILY MX <= 332 lb/d all year
001Carbon tetrachlorideDAILY AV report only all year
001Carbon tetrachlorideDAILY MX report only all year
0011,2-DichloroethaneDAILY AV report only all year
0011,2-DichloroethaneDAILY MX report only all year
001ChloroformDAILY AV report only all year
001ChloroformDAILY MX report only all year
001TolueneDAILY AV report only all year
001TolueneDAILY MX report only all year
001BenzeneDAILY AV report only all year
001BenzeneDAILY MX report only all year
001ChlorobenzeneDAILY AV report only all year
001ChlorobenzeneDAILY MX report only all year
001EthylbenzeneDAILY AV report only all year
001EthylbenzeneDAILY MX report only all year
001HexachlorobutadieneDAILY AV report only all year
001HexachlorobutadieneDAILY MX report only all year
001HexachloroethaneDAILY AV report only all year
001HexachloroethaneDAILY MX report only all year
001Methyl chloride [Chloromethane]DAILY AV report only all year
001Methyl chloride [Chloromethane]DAILY MX report only all year
001Methylene chlorideDAILY AV report only all year
001Methylene chlorideDAILY MX report only all year
001NitrobenzeneDAILY AV report only all year
001NitrobenzeneDAILY MX report only all year
001TetrachloroethyleneDAILY AV report only all year
001TetrachloroethyleneDAILY MX report only all year
0011,1-DichloroethaneDAILY AV report only all year
0011,1-DichloroethaneDAILY MX report only all year
0011,1-DichloroethyleneDAILY AV report only all year
0011,1-DichloroethyleneDAILY MX report only all year
0011,1,1-TrichloroethaneDAILY AV report only all year
0011,1,1-TrichloroethaneDAILY MX report only all year
0011,1,2-TrichloroethaneDAILY AV report only all year
0011,1,2-TrichloroethaneDAILY MX report only all year
0011,2-DichlorobenzeneDAILY AV report only all year
0011,2-DichlorobenzeneDAILY MX report only all year
0011,2-DichloropropaneDAILY AV report only all year
0011,2-DichloropropaneDAILY MX report only all year
001trans-1,2-DichloroethyleneDAILY AV report only all year
001trans-1,2-DichloroethyleneDAILY MX report only all year
0011,2,4-TrichlorobenzeneDAILY AV report only all year
0011,2,4-TrichlorobenzeneDAILY MX report only all year
0011,3-DichlorobenzeneDAILY AV report only all year
0011,3-DichlorobenzeneDAILY MX report only all year
0011,4-DichlorobenzeneDAILY AV report only all year
0011,4-DichlorobenzeneDAILY MX report only all year
0012-NitrophenolDAILY AV report only all year
0012-NitrophenolDAILY MX report only all year
0012,4-DinitrophenolDAILY AV report only all year
0012,4-DinitrophenolDAILY MX report only all year
0014-NitrophenolDAILY AV report only all year
0014-NitrophenolDAILY MX report only all year
0014,6-Dinitro-o-cresolDAILY AV report only all year
0014,6-Dinitro-o-cresolDAILY MX report only all year
001Vinyl chlorideDAILY AV report only all year
001Vinyl chlorideDAILY MX report only all year
001TrichloroethyleneDAILY AV report only all year
001TrichloroethyleneDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY AV <= 1.44 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 3 MGD all year
0011,3-DichloropropyleneDAILY AV report only all year
0011,3-DichloropropyleneDAILY MX report only all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
001ChloroethaneDAILY AV report only all year
001ChloroethaneDAILY MX report only all year
002Temperature, water deg. fahrenheitDAILY AV <= 100 deg F all year
002Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
002BOD, 5-day, 20 deg. CDAILY MX <= 15 mg/L all year
002BOD, 5-day, 20 deg. CDAILY AV <= 60 lb/d all year
002BOD, 5-day, 20 deg. CDAILY MX <= 150 lb/d all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 200 mg/L all year
002Oxygen demand, chem. [high level] [COD]DAILY AV report only all year
002Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
002pHMINIMUM >= 5 SU all year
002pHMAXIMUM <= 11 SU all year
002Solids, total suspendedDAILY MX <= 100 mg/L all year
002Solids, total suspendedDAILY AV report only all year
002Solids, total suspendedDAILY MX report only all year
002Zinc, total [as Zn]DAILY AV report only all year
002Zinc, total [as Zn]DAILY MX report only all year
002Carbon tetrachlorideDAILY AV report only all year
002Carbon tetrachlorideDAILY MX report only all year
0021,2-DichloroethaneDAILY AV report only all year
0021,2-DichloroethaneDAILY MX report only all year
002ChloroformDAILY AV report only all year
002ChloroformDAILY MX report only all year
002TolueneDAILY AV report only all year
002TolueneDAILY MX report only all year
002BenzeneDAILY AV report only all year
002BenzeneDAILY MX report only all year
002ChlorobenzeneDAILY AV report only all year
002ChlorobenzeneDAILY MX report only all year
002EthylbenzeneDAILY AV report only all year
002EthylbenzeneDAILY MX report only all year
002HexachlorobutadieneDAILY AV report only all year
002HexachlorobutadieneDAILY MX report only all year
002HexachloroethaneDAILY AV report only all year
002HexachloroethaneDAILY MX report only all year
002Methyl chloride [Chloromethane]DAILY AV report only all year
002Methyl chloride [Chloromethane]DAILY MX report only all year
002Methylene chlorideDAILY AV report only all year
002Methylene chlorideDAILY MX report only all year
002NitrobenzeneDAILY AV report only all year
002NitrobenzeneDAILY MX report only all year
002TetrachloroethyleneDAILY AV report only all year
002TetrachloroethyleneDAILY MX report only all year
0021,1-DichloroethaneDAILY AV report only all year
0021,1-DichloroethaneDAILY MX report only all year
0021,1-DichloroethyleneDAILY AV report only all year
0021,1-DichloroethyleneDAILY MX report only all year
0021,1,1-TrichloroethaneDAILY AV report only all year
0021,1,1-TrichloroethaneDAILY MX report only all year
0021,1,2-TrichloroethaneDAILY AV report only all year
0021,1,2-TrichloroethaneDAILY MX report only all year
0021,2-DichlorobenzeneDAILY AV report only all year
0021,2-DichlorobenzeneDAILY MX report only all year
0021,2-DichloropropaneDAILY AV report only all year
0021,2-DichloropropaneDAILY MX report only all year
002trans-1,2-DichloroethyleneDAILY AV report only all year
002trans-1,2-DichloroethyleneDAILY MX report only all year
0021,2,4-TrichlorobenzeneDAILY AV report only all year
0021,2,4-TrichlorobenzeneDAILY MX report only all year
0021,3-DichlorobenzeneDAILY AV report only all year
0021,3-DichlorobenzeneDAILY MX report only all year
0021,4-DichlorobenzeneDAILY AV report only all year
0021,4-DichlorobenzeneDAILY MX report only all year
0022-NitrophenolDAILY AV report only all year
0022-NitrophenolDAILY MX report only all year
0022,4-DinitrophenolDAILY AV report only all year
0022,4-DinitrophenolDAILY MX report only all year
0024-NitrophenolDAILY AV report only all year
0024-NitrophenolDAILY MX report only all year
0024,6-Dinitro-o-cresolDAILY AV report only all year
0024,6-Dinitro-o-cresolDAILY MX report only all year
002Vinyl chlorideDAILY AV report only all year
002Vinyl chlorideDAILY MX report only all year
002TrichloroethyleneDAILY AV report only all year
002TrichloroethyleneDAILY MX report only 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
0021,3-DichloropropyleneDAILY AV report only all year
0021,3-DichloropropyleneDAILY MX report only all year
002pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
002pH range excursions, monthly total accumMO TOTAL <= 446 min all year
002ChloroethaneDAILY AV report only all year
002ChloroethaneDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY AV <= 425 lb/d all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 1064 lb/d all year
003Solids, total suspendedDAILY AV <= 132 lb/d all year
003Solids, total suspendedDAILY MX <= 332 lb/d all year
003Carbon tetrachlorideDAILY AV <= .41 lb/d all year
003Carbon tetrachlorideDAILY MX <= 1.1 lb/d all year
0031,2-DichloroethaneDAILY AV <= .52 lb/d all year
0031,2-DichloroethaneDAILY MX <= 1.66 lb/d all year
003ChloroformDAILY AV <= .32 lb/d all year
003ChloroformDAILY MX <= .94 lb/d all year
003TolueneDAILY AV <= .08 lb/d all year
003TolueneDAILY MX <= .21 lb/d all year
003BenzeneDAILY AV <= .16 lb/d all year
003BenzeneDAILY MX <= .39 lb/d all year
003ChlorobenzeneDAILY AV <= .41 lb/d all year
003ChlorobenzeneDAILY MX <= 1.1 lb/d all year
003EthylbenzeneDAILY AV <= .41 lb/d all year
003EthylbenzeneDAILY MX <= 1.1 lb/d all year
003HexachlorobutadieneDAILY AV <= .41 lb/d all year
003HexachlorobutadieneDAILY MX <= 1.04 lb/d all year
003HexachloroethaneDAILY AV <= .57 lb/d all year
003HexachloroethaneDAILY MX <= 2.3 lb/d all year
003Methyl chloride [Chloromethane]DAILY AV <= .32 lb/d all year
003Methyl chloride [Chloromethane]DAILY MX <= .85 lb/d all year
003Methylene chlorideDAILY AV <= .1 lb/d all year
003Methylene chlorideDAILY MX <= .49 lb/d all year
003NitrobenzeneDAILY AV <= 6.47 lb/d all year
003NitrobenzeneDAILY MX <= 18.5 lb/d all year
003TetrachloroethyleneDAILY AV <= .15 lb/d all year
003TetrachloroethyleneDAILY MX <= .47 lb/d all year
0031,1-DichloroethaneDAILY AV <= .06 lb/d all year
0031,1-DichloroethaneDAILY MX <= .17 lb/d all year
0031,1-DichloroethyleneDAILY AV <= .06 lb/d all year
0031,1-DichloroethyleneDAILY MX <= .17 lb/d all year
0031,1,1-TrichloroethaneDAILY AV <= .06 lb/d all year
0031,1,1-TrichloroethaneDAILY MX <= .17 lb/d all year
0031,1,2-TrichloroethaneDAILY AV <= .09 lb/d all year
0031,1,2-TrichloroethaneDAILY MX <= .37 lb/d all year
0031,2-DichlorobenzeneDAILY AV <= .57 lb/d all year
0031,2-DichlorobenzeneDAILY MX <= 2.3 lb/d all year
0031,2-DichloropropaneDAILY AV <= .57 lb/d all year
0031,2-DichloropropaneDAILY MX <= 2.3 lb/d all year
003trans-1,2-DichloroethyleneDAILY AV <= .07 lb/d all year
003trans-1,2-DichloroethyleneDAILY MX <= .19 lb/d all year
0031,2,4-TrichlorobenzeneDAILY AV <= .57 lb/d all year
0031,2,4-TrichlorobenzeneDAILY MX <= 2.3 lb/d all year
0031,3-DichlorobenzeneDAILY AV <= .41 lb/d all year
0031,3-DichlorobenzeneDAILY MX <= 1.1 lb/d all year
0031,4-DichlorobenzeneDAILY AV <= .41 lb/d all year
0031,4-DichlorobenzeneDAILY MX <= 1.1 lb/d all year
0032-NitrophenolDAILY AV <= .19 lb/d all year
0032-NitrophenolDAILY MX <= .67 lb/d all year
0032,4-DinitrophenolDAILY AV <= 3.49 lb/d all year
0032,4-DinitrophenolDAILY MX <= 12.4 lb/d all year
0034-NitrophenolDAILY AV <= .47 lb/d all year
0034-NitrophenolDAILY MX <= 1.67 lb/d all year
0034,6-Dinitro-o-cresolDAILY AV <= .23 lb/d all year
0034,6-Dinitro-o-cresolDAILY MX <= .8 lb/d all year
003Vinyl chlorideDAILY AV <= .28 lb/d all year
003Vinyl chlorideDAILY MX <= .5 lb/d all year
003TrichloroethyleneDAILY AV <= .08 lb/d all year
003TrichloroethyleneDAILY MX <= .2 lb/d all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
0031,3-DichloropropyleneDAILY AV <= .57 lb/d all year
0031,3-DichloropropyleneDAILY MX <= 2.3 lb/d all year
003ChloroethaneDAILY AV <= .32 lb/d all year
003ChloroethaneDAILY MX <= .85 lb/d all year
101Solids, total suspendedDAILY AV <= 77 lb/d all year
101Solids, total suspendedDAILY MX <= 169 lb/d all year
101Carbon, tot organic [TOC]DAILY AV <= 12 mg/L all year
101Carbon, tot organic [TOC]DAILY MX <= 19 mg/L all year
101Carbon, tot organic [TOC]DAILY AV report only all year
101Carbon, tot organic [TOC]DAILY MX report only all year
101Arsenic, total [as As]DAILY AV <= .096 mg/L all year
101Arsenic, total [as As]DAILY MX <= .179 mg/L all year
101Arsenic, total [as As]DAILY AV <= .24 lb/d all year
101Arsenic, total [as As]DAILY MX <= .33 lb/d all year
101Cadmium, total [as Cd]DAILY AV report only all year
101Cadmium, total [as Cd]DAILY MX <= .179 mg/L all year
101Cadmium, total [as Cd]DAILY AV <= .22 lb/d all year
101Cadmium, total [as Cd]DAILY MX <= .45 lb/d all year
101Chromium, total [as Cr]DAILY AV <= .419 mg/L all year
101Chromium, total [as Cr]DAILY MX <= .834 mg/L all year
101Chromium, total [as Cr]DAILY AV <= .6 lb/d all year
101Chromium, total [as Cr]DAILY MX <= .82 lb/d all year
101Copper, total [as Cu]DAILY AV <= .419 mg/L all year
101Copper, total [as Cu]DAILY MX <= .834 mg/L all year
101Copper, total [as Cu]DAILY AV <= 1.05 lb/d all year
101Copper, total [as Cu]DAILY MX <= 1.99 lb/d all year
101Lead, total [as Pb]DAILY AV <= .419 mg/L all year
101Lead, total [as Pb]DAILY MX <= .838 mg/L all year
101Lead, total [as Pb]DAILY AV <= .48 lb/d all year
101Lead, total [as Pb]DAILY MX <= .66 lb/d all year
101Silver, total [as Ag]DAILY AV report only all year
101Silver, total [as Ag]DAILY MX <= .083 mg/L all year
101Silver, total [as Ag]DAILY AV <= .11 lb/d all year
101Silver, total [as Ag]DAILY MX <= .21 lb/d all year
101Zinc, total [as Zn]DAILY AV <= .838 mg/L all year
101Zinc, total [as Zn]DAILY MX <= 1.67 mg/L all year
101Zinc, total [as Zn]DAILY AV <= 1.19 lb/d all year
101Zinc, total [as Zn]DAILY MX <= 1.65 lb/d all year
101Titanium, total [as Ti]DAILY AV report only all year
101Titanium, total [as Ti]DAILY MX report only all year
101Titanium, total [as Ti]DAILY AV <= .159 lb/d all year
101Titanium, total [as Ti]DAILY MX <= .296 lb/d all year
101Flow, in conduit or thru treatment plantDAILY AV <= .3 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= .3 MGD all year
101Mercury, total [as Hg]DAILY AV report only all year
101Mercury, total [as Hg]DAILY MX <= .0045 mg/L all year
101Mercury, total [as Hg]DAILY AV <= .011 lb/d all year
101Mercury, total [as Hg]DAILY MX <= .0114 lb/d 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
TX1LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia)48HR MIN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia)MO AV MN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllina48HR MIN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllinaMO AV MN report only all year
TX1NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia)48HR MIN report only all year
TX1NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina48HR MIN report only all year
TX1NOAEC Lethal Static Renewal 48HR Acute Menidia beryllinaMO AV MN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)48HR MIN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Menidia beryllina48HR MIN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute 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 beryllinaSINGGRAB report only all year

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