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Industrial Organic Chemicals, Port Arthur, Texas. NPDES permit TX0119369, in force until Apr 26, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 55 mg/L | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Carbon tetrachloride | daily maximum | report only (mg/L) | all year | 001 |
| 1,2-Dichloroethane | daily maximum | report only (mg/L) | all year | 001 |
| Chloroform | daily maximum | report only (mg/L) | all year | 001 |
| Toluene | daily maximum | report only (mg/L) | all year | 001 |
| Benzene | daily maximum | report only (mg/L) | all year | 001 |
| Acenaphthylene | daily maximum | report only (mg/L) | all year | 001 |
| Acenaphthene | daily maximum | report only (mg/L) | all year | 001 |
| Acrylonitrile | daily maximum | report only (mg/L) | all year | 001 |
| Anthracene | daily maximum | report only (mg/L) | all year | 001 |
| Benzo[b]fluoranthene | daily maximum | report only (mg/L) | all year | 001 |
| Benzo[k]fluoranthene | daily maximum | report only (mg/L) | all year | 001 |
| Benzo[a]pyrene | daily maximum | report only (mg/L) | all year | 001 |
| Chlorobenzene | daily maximum | report only (mg/L) | all year | 001 |
| Chrysene | daily maximum | report only (mg/L) | all year | 001 |
| Diethyl phthalate | daily maximum | report only (mg/L) | all year | 001 |
| Dimethyl phthalate | daily maximum | report only (mg/L) | all year | 001 |
| Ethylbenzene | daily maximum | report only (mg/L) | all year | 001 |
| Fluoranthene | daily maximum | report only (mg/L) | all year | 001 |
| Fluorene | daily maximum | report only (mg/L) | all year | 001 |
| Hexachlorobutadiene | daily maximum | report only (mg/L) | all year | 001 |
| Hexachloroethane | daily maximum | report only (mg/L) | all year | 001 |
| Methyl chloride [Chloromethane] | daily maximum | report only (mg/L) | all year | 001 |
| Methylene chloride | daily maximum | report only (mg/L) | all year | 001 |
| Nitrobenzene | daily maximum | report only (mg/L) | all year | 001 |
| Phenanthrene | daily maximum | report only (mg/L) | all year | 001 |
| Pyrene | daily maximum | report only (mg/L) | all year | 001 |
| Tetrachloroethylene | daily maximum | report only (mg/L) | all year | 001 |
| 1,1-Dichloroethane | daily maximum | report only (mg/L) | all year | 001 |
| 1,1-Dichloroethylene | daily maximum | report only (mg/L) | all year | 001 |
| 1,1,1-Trichloroethane | daily maximum | report only (mg/L) | all year | 001 |
| 1,1,2-Trichloroethane | daily maximum | report only (mg/L) | all year | 001 |
| Benzo[a]anthracene | daily maximum | report only (mg/L) | all year | 001 |
| 1,2-Dichlorobenzene | daily maximum | report only (mg/L) | all year | 001 |
| 1,2-Dichloropropane | daily maximum | report only (mg/L) | all year | 001 |
| trans-1,2-Dichloroethylene | daily maximum | report only (mg/L) | all year | 001 |
| 1,2,4-Trichlorobenzene | daily maximum | report only (mg/L) | all year | 001 |
| 1,3-Dichlorobenzene | daily maximum | report only (mg/L) | all year | 001 |
| 1,4-Dichlorobenzene | daily maximum | report only (mg/L) | all year | 001 |
| 2-Nitrophenol | daily maximum | report only (mg/L) | all year | 001 |
| 2,4-Dimethylphenol | daily maximum | report only (mg/L) | all year | 001 |
| 2,4-Dinitrophenol | daily maximum | report only (mg/L) | all year | 001 |
| 4-Nitrophenol | daily maximum | report only (mg/L) | all year | 001 |
| 4,6-Dinitro-o-cresol | daily maximum | report only (mg/L) | all year | 001 |
| Phenol | daily maximum | report only (mg/L) | all year | 001 |
| Naphthalene | daily maximum | report only (mg/L) | all year | 001 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (mg/L) | all year | 001 |
| Di-n-butyl phthalate | daily maximum | report only (mg/L) | all year | 001 |
| Vinyl chloride | daily maximum | report only (mg/L) | all year | 001 |
| Trichloroethylene | daily maximum | report only (mg/L) | all year | 001 |
| Hexachlorobenzene | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| 1,3-Dichloropropylene | daily maximum | report only (mg/L) | all year | 001 |
| Chloroethane | daily maximum | report only (mg/L) | all year | 001 |
| Temperature, water deg. fahrenheit | daily average | ≤ 105 deg F | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 108 deg F | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily average | ≤ 584 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 835 lb/d | all year | 002 |
| Oil & Grease | daily average | ≤ 167 lb/d | all year | 002 |
| Oil & Grease | daily maximum | ≤ 250 lb/d | all year | 002 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 2 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2.6 MGD | all year | 002 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX2 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX2 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX2 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX2 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX2 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (pass=0;fail=1) | all year | TX2 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX2 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX2 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX2 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX2 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX2 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX2 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX2 |
| LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX2 |
| LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX2 |
| Whole effluent toxicity - retest #1 | single sample | report only (pass=0;fail=1) | all year | TXB |
| Whole effluent toxicity - retest #2 | single sample | report only (pass=0;fail=1) | all year | TXB |
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | single sample | report only (pass=0;fail=1) | all year | TXB |
| LC50 Pass/Fail Static 24Hr Acute Menidia beryllina | single sample | report only (pass=0;fail=1) | all year | TXB |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 165 Chemicals and Allied Products permits in Texas.
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