NPDES permit TX0074276 · Major NON-POTW · effective, expires 2029-08-21 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-08-31. Most often over: Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) (4), Oxygen demand, chem. [high level] [COD] (2), pH (2).
Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. fahrenheit | DAILY MX | <= 95 deg F | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY AV | <= 117 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 286 lb/d | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 205 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 570 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .0197 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .0417 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .15 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .32 lb/d | all year |
| 001 | Lead, total [as Pb] | DAILY AV | <= .0677 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .143 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY AV | <= .4 lb/d | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .85 lb/d | all year |
| 001 | Aluminum, total [as Al] | DAILY AV | <= .835 mg/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 1.766 mg/L | all year |
| 001 | Carbon tetrachloride | DAILY AV | <= .033 lb/d | all year |
| 001 | Carbon tetrachloride | DAILY MX | <= .069 lb/d | all year |
| 001 | 1,2-Dichloroethane | DAILY AV | <= .123 lb/d | all year |
| 001 | 1,2-Dichloroethane | DAILY MX | <= .382 lb/d | all year |
| 001 | Chloroform | DAILY AV | <= .038 lb/d | all year |
| 001 | Chloroform | DAILY MX | <= .083 lb/d | all year |
| 001 | Toluene | DAILY AV | <= .047 lb/d | all year |
| 001 | Toluene | DAILY MX | <= .145 lb/d | all year |
| 001 | Benzene | DAILY AV | <= .067 lb/d | all year |
| 001 | Benzene | DAILY MX | <= .246 lb/d | all year |
| 001 | Acenaphthylene | DAILY AV | <= .04 lb/d | all year |
| 001 | Acenaphthylene | DAILY MX | <= .107 lb/d | all year |
| 001 | Acenaphthene | DAILY AV | <= .04 lb/d | all year |
| 001 | Acenaphthene | DAILY MX | <= .107 lb/d | all year |
| 001 | Acrylonitrile | DAILY AV | <= .0288 mg/L | all year |
| 001 | Acrylonitrile | DAILY MX | <= .061 mg/L | all year |
| 001 | Acrylonitrile | DAILY AV | <= .174 lb/d | all year |
| 001 | Acrylonitrile | DAILY MX | <= .438 lb/d | all year |
| 001 | Anthracene | DAILY AV | <= .04 lb/d | all year |
| 001 | Anthracene | DAILY MX | <= .107 lb/d | all year |
| 001 | Benzo[k]fluoranthene | DAILY AV | <= .04 lb/d | all year |
| 001 | Benzo[k]fluoranthene | DAILY MX | <= .107 lb/d | all year |
| 001 | Benzo[a]pyrene | DAILY AV | <= .0025 mg/L | all year |
| 001 | Benzo[a]pyrene | DAILY MX | <= .0053 mg/L | all year |
| 001 | Benzo[a]pyrene | DAILY AV | <= .024 lb/d | all year |
| 001 | Benzo[a]pyrene | DAILY MX | <= .05 lb/d | all year |
| 001 | Chlorobenzene | DAILY AV | <= .027 lb/d | all year |
| 001 | Chlorobenzene | DAILY MX | <= .051 lb/d | all year |
| 001 | Chrysene | DAILY AV | <= .04 lb/d | all year |
| 001 | Chrysene | DAILY MX | <= .107 lb/d | all year |
| 001 | Diethyl phthalate | DAILY AV | <= .147 lb/d | all year |
| 001 | Diethyl phthalate | DAILY MX | <= .368 lb/d | all year |
| 001 | Dimethyl phthalate | DAILY AV | <= .034 lb/d | all year |
| 001 | Dimethyl phthalate | DAILY MX | <= .085 lb/d | all year |
| 001 | Ethylbenzene | DAILY AV | <= .058 lb/d | all year |
| 001 | Ethylbenzene | DAILY MX | <= .196 lb/d | all year |
| 001 | Fluoranthene | DAILY AV | <= .045 lb/d | all year |
| 001 | Fluoranthene | DAILY MX | <= .123 lb/d | all year |
| 001 | Fluorene | DAILY AV | <= .04 lb/d | all year |
| 001 | Fluorene | DAILY MX | <= .107 lb/d | all year |
| 001 | Hexachlorobutadiene | DAILY AV | <= .036 lb/d | all year |
| 001 | Hexachlorobutadiene | DAILY MX | <= .089 lb/d | all year |
| 001 | Hexachloroethane | DAILY AV | <= .038 lb/d | all year |
| 001 | Hexachloroethane | DAILY MX | <= .098 lb/d | all year |
| 001 | Methyl chloride [Chloromethane] | DAILY AV | <= .156 lb/d | all year |
| 001 | Methyl chloride [Chloromethane] | DAILY MX | <= .344 lb/d | all year |
| 001 | Methylene chloride | DAILY AV | <= .072 lb/d | all year |
| 001 | Methylene chloride | DAILY MX | <= .161 lb/d | all year |
| 001 | Nitrobenzene | DAILY AV | <= .049 lb/d | all year |
| 001 | Nitrobenzene | DAILY MX | <= .123 lb/d | all year |
| 001 | Phenanthrene | DAILY AV | <= .04 lb/d | all year |
| 001 | Phenanthrene | DAILY MX | <= .09 lb/d | all year |
| 001 | Pyrene | DAILY AV | <= .045 lb/d | all year |
| 001 | Pyrene | DAILY MX | <= .121 lb/d | all year |
| 001 | Tetrachloroethylene | DAILY AV | <= .04 lb/d | all year |
| 001 | Tetrachloroethylene | DAILY MX | <= .101 lb/d | all year |
| 001 | 1,1-Dichloroethane | DAILY AV | <= .04 lb/d | all year |
| 001 | 1,1-Dichloroethane | DAILY MX | <= .107 lb/d | all year |
| 001 | 1,1-Dichloroethylene | DAILY AV | <= .029 lb/d | all year |
| 001 | 1,1-Dichloroethylene | DAILY MX | <= .045 lb/d | all year |
| 001 | 1,1,1-Trichloroethane | DAILY AV | <= .038 lb/d | all year |
| 001 | 1,1,1-Trichloroethane | DAILY MX | <= .098 lb/d | all year |
| 001 | 1,1,2-Trichloroethane | DAILY AV | <= .038 lb/d | all year |
| 001 | 1,1,2-Trichloroethane | DAILY MX | <= .098 lb/d | all year |
| 001 | Benzo[a]anthracene | DAILY AV | <= .0025 mg/L | all year |
| 001 | Benzo[a]anthracene | DAILY MX | <= .0053 mg/L | all year |
| 001 | Benzo[a]anthracene | DAILY AV | <= .024 lb/d | all year |
| 001 | Benzo[a]anthracene | DAILY MX | <= .05 lb/d | all year |
| 001 | 1,2-Dichlorobenzene | DAILY AV | <= .139 lb/d | all year |
| 001 | 1,2-Dichlorobenzene | DAILY MX | <= .295 lb/d | all year |
| 001 | 1,2-Dichloropropane | DAILY AV | <= .277 lb/d | all year |
| 001 | 1,2-Dichloropropane | DAILY MX | <= .416 lb/d | all year |
| 001 | trans-1,2-Dichloroethylene | DAILY AV | <= .038 lb/d | all year |
| 001 | trans-1,2-Dichloroethylene | DAILY MX | <= .098 lb/d | all year |
| 001 | 1,2,4-Trichlorobenzene | DAILY AV | <= .123 lb/d | all year |
| 001 | 1,2,4-Trichlorobenzene | DAILY MX | <= .254 lb/d | all year |
| 001 | 1,3-Dichlorobenzene | DAILY AV | <= .056 lb/d | all year |
| 001 | 1,3-Dichlorobenzene | DAILY MX | <= .08 lb/d | all year |
| 001 | 1,4-Dichlorobenzene | DAILY AV | <= .027 lb/d | all year |
| 001 | 1,4-Dichlorobenzene | DAILY MX | <= .051 lb/d | all year |
| 001 | 2-Chlorophenol | DAILY AV | <= .056 lb/d | all year |
| 001 | 2-Chlorophenol | DAILY MX | <= .177 lb/d | all year |
| 001 | 2-Nitrophenol | DAILY AV | <= .074 lb/d | all year |
| 001 | 2-Nitrophenol | DAILY MX | <= .125 lb/d | all year |
| 001 | 2,4-Dichlorophenol | DAILY AV | <= .071 lb/d | all year |
| 001 | 2,4-Dichlorophenol | DAILY MX | <= .203 lb/d | all year |
| 001 | 2,4-Dimethylphenol | DAILY AV | <= .033 lb/d | all year |
| 001 | 2,4-Dimethylphenol | DAILY MX | <= .065 lb/d | all year |
| 001 | 2,4-Dinitrotoluene | DAILY AV | <= .205 lb/d | all year |
| 001 | 2,4-Dinitrotoluene | DAILY MX | <= .516 lb/d | all year |
| 001 | 2,4-Dinitrophenol | DAILY AV | <= .129 lb/d | all year |
| 001 | 2,4-Dinitrophenol | DAILY MX | <= .223 lb/d | all year |
| 001 | 2,6-Dinitrotoluene | DAILY AV | <= .462 lb/d | all year |
| 001 | 2,6-Dinitrotoluene | DAILY MX | <= 1.161 lb/d | all year |
| 001 | 4-Nitrophenol | DAILY AV | <= .13 lb/d | all year |
| 001 | 4-Nitrophenol | DAILY MX | <= .225 lb/d | all year |
| 001 | 4,6-Dinitro-o-cresol | DAILY AV | <= .141 lb/d | all year |
| 001 | 4,6-Dinitro-o-cresol | DAILY MX | <= .502 lb/d | all year |
| 001 | Phenol | DAILY AV | <= .027 lb/d | all year |
| 001 | Phenol | DAILY MX | <= .047 lb/d | all year |
| 001 | Naphthalene | DAILY AV | <= .04 lb/d | all year |
| 001 | Naphthalene | DAILY MX | <= .107 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY AV | <= .187 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY MX | <= .505 lb/d | all year |
| 001 | Di-n-butyl phthalate | DAILY AV | <= .049 lb/d | all year |
| 001 | Di-n-butyl phthalate | DAILY MX | <= .103 lb/d | all year |
| 001 | Vinyl chloride | DAILY AV | <= .188 lb/d | all year |
| 001 | Vinyl chloride | DAILY MX | <= .485 lb/d | all year |
| 001 | Trichloroethylene | DAILY AV | <= .038 lb/d | all year |
| 001 | Trichloroethylene | DAILY MX | <= .098 lb/d | all year |
| 001 | Hexachlorobenzene | DAILY AV | <= .00003 mg/L | all year |
| 001 | Hexachlorobenzene | DAILY MX | <= .00007 mg/L | all year |
| 001 | Hexachlorobenzene | DAILY AV | <= .0006 lb/d | all year |
| 001 | Hexachlorobenzene | DAILY MX | <= .0012 lb/d | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | <= .85 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= 1.3 MGD | all year |
| 001 | 1,3-Dichloropropylene | DAILY AV | <= .053 lb/d | all year |
| 001 | 1,3-Dichloropropylene | DAILY MX | <= .08 lb/d | all year |
| 001 | 3,4-Benzofluoranthene | DAILY AV | <= .042 lb/d | all year |
| 001 | 3,4-Benzofluoranthene | DAILY MX | <= .11 lb/d | all year |
| 001 | Chloroethane | DAILY AV | <= .188 lb/d | all year |
| 001 | Chloroethane | DAILY MX | <= .485 lb/d | all year |
| 002 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 002 | pH | MINIMUM | >= 6 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 003 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 003 | pH | MINIMUM | >= 6 SU | all year |
| 003 | pH | MAXIMUM | <= 9 SU | all year |
| 003 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 004 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 004 | pH | MINIMUM | >= 6 SU | all year |
| 004 | pH | MAXIMUM | <= 9 SU | all year |
| 004 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 101 | BOD, 5-day, 20 deg. C | DAILY MX | <= 65 mg/L | all year |
| 101 | pH | MINIMUM | >= 6 SU | all year |
| 101 | pH | MAXIMUM | <= 9 SU | all year |
| 101 | Solids, total suspended | DAILY MX | <= 65 mg/L | all year |
| 101 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 101 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 101 | Chlorine, total residual | MO MIN | >= 1 mg/L | all year |
| 101 | Enterococci | DAILY AV | <= 35 CFU/100mL | all year |
| 101 | Enterococci | DAILY MX | <= 104 CFU/100mL | all year |
| TX1 | Whole effluent toxicity - retest #1 | 7 DA MIN | report only | all year |
| TX1 | Whole effluent toxicity - retest #1 | MO AV MN | report only | all year |
| TX1 | Whole effluent toxicity - retest #2 | 7 DA MIN | report only | all year |
| TX1 | Whole effluent toxicity - retest #2 | MO AV MN | report only | all year |
| TX1 | Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | >= 29 % | all year |
| TX1 | Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | >= 29 % | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX1 | LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TXA | Whole effluent toxicity - retest #1 | SINGSAMP | report only | all year |
| TXA | Whole effluent toxicity - retest #2 | SINGSAMP | report only | all year |
| TXA | LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | SINGSAMP | report only | all year |
| TXA | LC50 Pass/Fail Static 24Hr Acute Menidia beryllina | SINGSAMP | report only | all year |
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