NPDES permit TX0006335 · Major NON-POTW · effective, expires 2030-10-28 · EPA's file as of 2026-09-19
Check this month's numbers before you fileLast period with anything received: 2026-07-31. Most often over: Enterococci (1).
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).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. fahrenheit | DAILY MX | <= 105 deg F | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY AV | <= 500.4 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 1000.8 lb/d | all year |
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY AV | <= 2149 lb/d | all year |
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 4235 lb/d | all year |
| 001 | pH | MINIMUM | >= 5 SU | all year |
| 001 | pH | MAXIMUM | <= 11 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 733 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 1465 lb/d | all year |
| 001 | Oil & Grease | DAILY AV | <= 225 lb/d | all year |
| 001 | Oil & Grease | DAILY MX | <= 337 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 100.1 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 200.2 lb/d | all year |
| 001 | Cyanide, free [as free] | DAILY AV | report only | all year |
| 001 | Cyanide, free [as free] | DAILY MX | report only | all year |
| 001 | Cyanide, free [as free] | DAILY AV | report only | all year |
| 001 | Cyanide, free [as free] | DAILY MX | report only | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .029 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .062 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .7288 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= 1.542 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY AV | <= 3.702 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 7.832 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= .24 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= .509 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= 6.63 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 14.02 lb/d | all year |
| 001 | Carbon tetrachloride | DAILY AV | <= .327 lb/d | all year |
| 001 | Carbon tetrachloride | DAILY MX | <= .69 lb/d | all year |
| 001 | 1,2-Dichloroethane | DAILY AV | <= 1.23 lb/d | all year |
| 001 | 1,2-Dichloroethane | DAILY MX | <= 3.82 lb/d | all year |
| 001 | Chloroform | DAILY AV | <= .38 lb/d | all year |
| 001 | Chloroform | DAILY MX | <= .83 lb/d | all year |
| 001 | Toluene | DAILY AV | <= .47 lb/d | all year |
| 001 | Toluene | DAILY MX | <= 1.45 lb/d | all year |
| 001 | Benzene | DAILY AV | <= .67 lb/d | all year |
| 001 | Benzene | DAILY MX | <= 2.46 lb/d | all year |
| 001 | Acenaphthylene | DAILY AV | <= .4 lb/d | all year |
| 001 | Acenaphthylene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Acenaphthene | DAILY AV | <= .4 lb/d | all year |
| 001 | Acenaphthene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Acrylonitrile | DAILY AV | <= 1.74 lb/d | all year |
| 001 | Acrylonitrile | DAILY MX | <= 4.38 lb/d | all year |
| 001 | Anthracene | DAILY AV | <= .4 lb/d | all year |
| 001 | Anthracene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Benzo[k]fluoranthene | DAILY AV | <= .4 lb/d | all year |
| 001 | Benzo[k]fluoranthene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Benzo[a]pyrene | DAILY AV | <= .0000854 mg/L | all year |
| 001 | Benzo[a]pyrene | DAILY MX | <= .00018 mg/L | all year |
| 001 | Benzo[a]pyrene | DAILY AV | <= .00285 lb/d | all year |
| 001 | Benzo[a]pyrene | DAILY MX | <= .00601 lb/d | all year |
| 001 | Chlorobenzene | DAILY AV | <= .27 lb/d | all year |
| 001 | Chlorobenzene | DAILY MX | <= .509 lb/d | all year |
| 001 | Chrysene | DAILY AV | <= .4 lb/d | all year |
| 001 | Chrysene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Diethyl phthalate | DAILY AV | <= 1.46 lb/d | all year |
| 001 | Diethyl phthalate | DAILY MX | <= 3.67 lb/d | all year |
| 001 | Dimethyl phthalate | DAILY AV | <= .34 lb/d | all year |
| 001 | Dimethyl phthalate | DAILY MX | <= .85 lb/d | all year |
| 001 | Ethylbenzene | DAILY AV | <= .58 lb/d | all year |
| 001 | Ethylbenzene | DAILY MX | <= 1.95 lb/d | all year |
| 001 | Fluoranthene | DAILY AV | <= .45 lb/d | all year |
| 001 | Fluoranthene | DAILY MX | <= 1.23 lb/d | all year |
| 001 | Fluorene | DAILY AV | <= .4 lb/d | all year |
| 001 | Fluorene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Hexachlorobutadiene | DAILY AV | <= .00751 mg/L | all year |
| 001 | Hexachlorobutadiene | DAILY MX | <= .0159 mg/L | all year |
| 001 | Hexachlorobutadiene | DAILY AV | <= .251 lb/d | all year |
| 001 | Hexachlorobutadiene | DAILY MX | <= .531 lb/d | all year |
| 001 | Hexachloroethane | DAILY AV | <= .38 lb/d | all year |
| 001 | Hexachloroethane | DAILY MX | <= .98 lb/d | all year |
| 001 | Methyl chloride [Chloromethane] | DAILY AV | <= 1.56 lb/d | all year |
| 001 | Methyl chloride [Chloromethane] | DAILY MX | <= 3.44 lb/d | all year |
| 001 | Methylene chloride | DAILY AV | <= .72 lb/d | all year |
| 001 | Methylene chloride | DAILY MX | <= 1.61 lb/d | all year |
| 001 | Nitrobenzene | DAILY AV | <= .49 lb/d | all year |
| 001 | Nitrobenzene | DAILY MX | <= 1.23 lb/d | all year |
| 001 | Phenanthrene | DAILY AV | <= .012 mg/L | all year |
| 001 | Phenanthrene | DAILY MX | <= .0255 mg/L | all year |
| 001 | Phenanthrene | DAILY AV | <= .4 lb/d | all year |
| 001 | Phenanthrene | DAILY MX | <= .851 lb/d | all year |
| 001 | Pyrene | DAILY AV | <= .45 lb/d | all year |
| 001 | Pyrene | DAILY MX | <= 1.21 lb/d | all year |
| 001 | Tetrachloroethylene | DAILY AV | <= .4 lb/d | all year |
| 001 | Tetrachloroethylene | DAILY MX | <= 1.01 lb/d | all year |
| 001 | 1,1-Dichloroethane | DAILY AV | <= .4 lb/d | all year |
| 001 | 1,1-Dichloroethane | DAILY MX | <= 1.07 lb/d | all year |
| 001 | 1,1-Dichloroethylene | DAILY AV | <= .29 lb/d | all year |
| 001 | 1,1-Dichloroethylene | DAILY MX | <= .45 lb/d | all year |
| 001 | 1,1,1-Trichloroethane | DAILY AV | <= .38 lb/d | all year |
| 001 | 1,1,1-Trichloroethane | DAILY MX | <= .98 lb/d | all year |
| 001 | 1,1,2-Trichloroethane | DAILY AV | <= .38 lb/d | all year |
| 001 | 1,1,2-Trichloroethane | DAILY MX | <= .98 lb/d | all year |
| 001 | Benzo[a]anthracene | DAILY AV | <= .000854 mg/L | all year |
| 001 | Benzo[a]anthracene | DAILY MX | <= .0018 mg/L | all year |
| 001 | Benzo[a]anthracene | DAILY AV | <= .029 lb/d | all year |
| 001 | Benzo[a]anthracene | DAILY MX | <= .06 lb/d | all year |
| 001 | 1,2-Dichlorobenzene | DAILY AV | <= 1.39 lb/d | all year |
| 001 | 1,2-Dichlorobenzene | DAILY MX | <= 2.95 lb/d | all year |
| 001 | 1,2-Dichloropropane | DAILY AV | <= 2.77 lb/d | all year |
| 001 | 1,2-Dichloropropane | DAILY MX | <= 4.16 lb/d | all year |
| 001 | trans-1,2-Dichloroethylene | DAILY AV | <= .38 lb/d | all year |
| 001 | trans-1,2-Dichloroethylene | DAILY MX | <= .98 lb/d | all year |
| 001 | 1,2,4-Trichlorobenzene | DAILY AV | <= 1.23 lb/d | all year |
| 001 | 1,2,4-Trichlorobenzene | DAILY MX | <= 2.53 lb/d | all year |
| 001 | 1,3-Dichlorobenzene | DAILY AV | <= .56 lb/d | all year |
| 001 | 1,3-Dichlorobenzene | DAILY MX | <= .8 lb/d | all year |
| 001 | 1,4-Dichlorobenzene | DAILY AV | <= .27 lb/d | all year |
| 001 | 1,4-Dichlorobenzene | DAILY MX | <= .509 lb/d | all year |
| 001 | 2-Chlorophenol | DAILY AV | <= .56 lb/d | all year |
| 001 | 2-Chlorophenol | DAILY MX | <= 1.77 lb/d | all year |
| 001 | 2-Nitrophenol | DAILY AV | <= .74 lb/d | all year |
| 001 | 2-Nitrophenol | DAILY MX | <= 1.25 lb/d | all year |
| 001 | 2,4-Dichlorophenol | DAILY AV | <= .709 lb/d | all year |
| 001 | 2,4-Dichlorophenol | DAILY MX | <= 2.03 lb/d | all year |
| 001 | 2,4-Dimethylphenol | DAILY AV | <= .327 lb/d | all year |
| 001 | 2,4-Dimethylphenol | DAILY MX | <= .65 lb/d | all year |
| 001 | 2,4-Dinitrotoluene | DAILY AV | <= 2.04 lb/d | all year |
| 001 | 2,4-Dinitrotoluene | DAILY MX | <= 5.15 lb/d | all year |
| 001 | 2,4-Dinitrophenol | DAILY AV | <= 1.28 lb/d | all year |
| 001 | 2,4-Dinitrophenol | DAILY MX | <= 2.22 lb/d | all year |
| 001 | 2,6-Dinitrotoluene | DAILY AV | <= 4.61 lb/d | all year |
| 001 | 2,6-Dinitrotoluene | DAILY MX | <= 11.59 lb/d | all year |
| 001 | 4-Nitrophenol | DAILY AV | <= 1.3 lb/d | all year |
| 001 | 4-Nitrophenol | DAILY MX | <= 2.24 lb/d | all year |
| 001 | 4,6-Dinitro-o-cresol | DAILY AV | <= 1.41 lb/d | all year |
| 001 | 4,6-Dinitro-o-cresol | DAILY MX | <= 5.01 lb/d | all year |
| 001 | Phenol | DAILY AV | <= .27 lb/d | all year |
| 001 | Phenol | DAILY MX | <= .47 lb/d | all year |
| 001 | Naphthalene | DAILY AV | <= .4 lb/d | all year |
| 001 | Naphthalene | DAILY MX | <= 1.07 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY AV | <= 1.86 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY MX | <= 5.05 lb/d | all year |
| 001 | Di-n-butyl phthalate | DAILY AV | <= .49 lb/d | all year |
| 001 | Di-n-butyl phthalate | DAILY MX | <= 1.03 lb/d | all year |
| 001 | Vinyl chloride | DAILY AV | <= 1 lb/d | all year |
| 001 | Vinyl chloride | DAILY MX | <= 1.33 lb/d | all year |
| 001 | Trichloroethylene | DAILY AV | <= .38 lb/d | all year |
| 001 | Trichloroethylene | DAILY MX | <= .98 lb/d | all year |
| 001 | Hexachlorobenzene | DAILY AV | <= .0000232 mg/L | all year |
| 001 | Hexachlorobenzene | DAILY MX | <= .0000491 mg/L | all year |
| 001 | Hexachlorobenzene | DAILY AV | <= .000774 lb/d | all year |
| 001 | Hexachlorobenzene | DAILY MX | <= .00164 lb/d | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | <= 4 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= 6.4 MGD | all year |
| 001 | 1,3-Dichloropropylene | DAILY AV | <= .52 lb/d | all year |
| 001 | 1,3-Dichloropropylene | DAILY MX | <= .8 lb/d | all year |
| 001 | Enterococci | DAILY AV | <= 35 MPN/100mL | all year |
| 001 | Enterococci | DAILY MX | <= 104 MPN/100mL | all year |
| 001 | 3,4-Benzofluoranthene | DAILY AV | <= .418 lb/d | all year |
| 001 | 3,4-Benzofluoranthene | DAILY MX | <= 1.1 lb/d | all year |
| 001 | pH range excursions, > 60 minutes | MO TOTAL | <= 0 occur/mo | all year |
| 001 | pH range excursions, monthly total accum | MO TOTAL | <= 446 min | all year |
| 001 | Chloroethane | DAILY AV | <= 1.88 lb/d | all year |
| 001 | Chloroethane | DAILY MX | <= 4.85 lb/d | 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 | 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 | SINGGRAB | 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