NPDES permit TX0030937 · Major NON-POTW · effective, expires 2029-03-08 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
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 | Oxygen demand, chem. [high level] [COD] | DAILY AV | report only | all year |
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY MX | report only | all year |
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY AV | <= 643.4 lb/d | all year |
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 1001.4 lb/d | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 30.6 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 74.1 mg/L | all year |
| 001 | Solids, total suspended | DAILY AV | <= 76.6 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 170.2 lb/d | all year |
| 001 | Oil & Grease | DAILY AV | <= 10 mg/L | all year |
| 001 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 001 | Oil & Grease | DAILY AV | <= 25 lb/d | all year |
| 001 | Oil & Grease | DAILY MX | <= 50 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 10 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 20 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 25 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 50 lb/d | all year |
| 001 | Phosphorus, total [as P] | DAILY AV | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Cyanide, free [as free] | DAILY AV | <= .036 mg/L | all year |
| 001 | Cyanide, free [as free] | DAILY MX | <= .076 mg/L | all year |
| 001 | Cyanide, free [as free] | DAILY AV | <= .09 lb/d | all year |
| 001 | Cyanide, free [as free] | DAILY MX | <= .19 lb/d | all year |
| 001 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 001 | Arsenic, total [as As] | DAILY MX | <= .162 mg/L | all year |
| 001 | Arsenic, total [as As] | DAILY AV | <= .25 lb/d | all year |
| 001 | Arsenic, total [as As] | DAILY MX | <= .406 lb/d | all year |
| 001 | Cadmium, total [as Cd] | DAILY AV | <= .0102 mg/L | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .0172 mg/L | all year |
| 001 | Cadmium, total [as Cd] | DAILY AV | <= .026 lb/d | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .043 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | report only | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= .63 lb/d | all year |
| 001 | Cobalt, total [as Co] | DAILY AV | <= .124 mg/L | all year |
| 001 | Cobalt, total [as Co] | DAILY MX | <= .192 mg/L | all year |
| 001 | Cobalt, total [as Co] | DAILY AV | <= .31 lb/d | all year |
| 001 | Cobalt, total [as Co] | DAILY MX | <= .481 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .178 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .376 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .446 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .941 lb/d | all year |
| 001 | Lead, total [as Pb] | DAILY AV | <= .16 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .35 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY AV | <= .401 lb/d | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .876 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY AV | <= .212 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= .45 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY AV | <= .531 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 1.13 lb/d | all year |
| 001 | Silver, total [as Ag] | DAILY AV | <= .03 mg/L | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .063 mg/L | all year |
| 001 | Silver, total [as Ag] | DAILY AV | <= .075 lb/d | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .158 lb/d | all year |
| 001 | Vanadium, total [as V] | DAILY AV | <= .066 mg/L | all year |
| 001 | Vanadium, total [as V] | DAILY MX | <= .218 mg/L | all year |
| 001 | Vanadium, total [as V] | DAILY AV | <= .166 lb/d | all year |
| 001 | Vanadium, total [as V] | DAILY MX | <= .546 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= .42 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= .497 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= 1.05 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 1.24 lb/d | all year |
| 001 | Antimony, total [as Sb] | DAILY AV | <= .206 mg/L | all year |
| 001 | Antimony, total [as Sb] | DAILY MX | <= .249 mg/L | all year |
| 001 | Antimony, total [as Sb] | DAILY AV | <= .516 lb/d | all year |
| 001 | Antimony, total [as Sb] | DAILY MX | <= .623 lb/d | all year |
| 001 | Tin, total [as Sn] | DAILY AV | <= .12 mg/L | all year |
| 001 | Tin, total [as Sn] | DAILY MX | <= .409 mg/L | all year |
| 001 | Tin, total [as Sn] | DAILY AV | <= .3 lb/d | all year |
| 001 | Tin, total [as Sn] | DAILY MX | <= 1.02 lb/d | all year |
| 001 | Titanium, total [as Ti] | DAILY AV | <= .062 mg/L | all year |
| 001 | Titanium, total [as Ti] | DAILY MX | <= .095 mg/L | all year |
| 001 | Titanium, total [as Ti] | DAILY AV | <= .155 lb/d | all year |
| 001 | Titanium, total [as Ti] | DAILY MX | <= .237 lb/d | all year |
| 001 | Butyl benzyl phthalate | DAILY AV | <= .0887 mg/L | all year |
| 001 | Butyl benzyl phthalate | DAILY MX | <= .188 mg/L | all year |
| 001 | Butyl benzyl phthalate | DAILY AV | <= .222 lb/d | all year |
| 001 | Butyl benzyl phthalate | DAILY MX | <= .471 lb/d | all year |
| 001 | Fluoranthene | DAILY AV | <= .268 mg/L | all year |
| 001 | Fluoranthene | DAILY MX | <= .0537 mg/L | all year |
| 001 | Fluoranthene | DAILY AV | <= .067 lb/d | all year |
| 001 | Fluoranthene | DAILY MX | <= .134 lb/d | all year |
| 001 | 2,4,6-Trichlorophenol | DAILY AV | <= .106 mg/L | all year |
| 001 | 2,4,6-Trichlorophenol | DAILY MX | <= .155 mg/L | all year |
| 001 | 2,4,6-Trichlorophenol | DAILY AV | <= .265 lb/d | all year |
| 001 | 2,4,6-Trichlorophenol | DAILY MX | <= .388 lb/d | all year |
| 001 | Phenol | DAILY AV | <= 1.08 mg/L | all year |
| 001 | Phenol | DAILY MX | <= 3.65 mg/L | all year |
| 001 | Phenol | DAILY AV | <= 2.7 lb/d | all year |
| 001 | Phenol | DAILY MX | <= 9.14 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY AV | <= .101 mg/L | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY MX | <= .215 mg/L | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY AV | <= .253 lb/d | all year |
| 001 | Di[2-ethylhexyl] phthalate [DEHP] | DAILY MX | <= .538 lb/d | all year |
| 001 | Phenols | DAILY AV | report only | all year |
| 001 | Phenols | DAILY MX | <= .3 mg/L | all year |
| 001 | Phenols | DAILY AV | <= .31 lb/d | all year |
| 001 | Phenols | DAILY MX | <= .62 lb/d | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | <= .3 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= .81 MGD | all year |
| 001 | o-Cresol | DAILY AV | <= .561 mg/L | all year |
| 001 | o-Cresol | DAILY MX | <= 1.92 mg/L | all year |
| 001 | o-Cresol | DAILY AV | <= 1.4 lb/d | all year |
| 001 | o-Cresol | DAILY MX | <= 4.81 lb/d | all year |
| 001 | Enterococci | DAILY AV | <= 35 CFU/100mL | all year |
| 001 | Enterococci | DAILY MX | <= 104 CFU/100mL | all year |
| 001 | Mercury, total [as Hg] | DAILY AV | <= .0007 mg/L | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | <= .0023 mg/L | all year |
| 001 | Mercury, total [as Hg] | DAILY AV | <= .002 lb/d | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | <= .006 lb/d | all year |
| 001 | Pyridine | DAILY AV | <= .182 mg/L | all year |
| 001 | Pyridine | DAILY MX | <= .37 mg/L | all year |
| 001 | Pyridine | DAILY AV | <= .456 lb/d | all year |
| 001 | Pyridine | DAILY MX | <= .926 lb/d | all year |
| 001 | p-Cresol | DAILY AV | <= .205 mg/L | all year |
| 001 | p-Cresol | DAILY MX | <= .698 mg/L | all year |
| 001 | p-Cresol | DAILY AV | <= .513 lb/d | all year |
| 001 | p-Cresol | DAILY MX | <= 1.75 lb/d | all year |
| 001 | n-Decane | DAILY AV | <= .437 mg/L | all year |
| 001 | n-Decane | DAILY MX | <= .948 mg/L | all year |
| 001 | n-Decane | DAILY AV | <= 1.09 lb/d | all year |
| 001 | n-Decane | DAILY MX | <= 2.37 lb/d | all year |
| 001 | Carbazole | DAILY AV | <= .276 mg/L | all year |
| 001 | Carbazole | DAILY MX | <= .598 mg/L | all year |
| 001 | Carbazole | DAILY AV | <= .691 lb/d | all year |
| 001 | Carbazole | DAILY MX | <= 1.5 lb/d | all year |
| 001 | n-Octadecane | DAILY AV | <= .302 mg/L | all year |
| 001 | n-Octadecane | DAILY MX | <= .589 mg/L | all year |
| 001 | n-Octadecane | DAILY AV | <= .756 lb/d | all year |
| 001 | n-Octadecane | DAILY MX | <= 1.47 lb/d | all year |
| 001 | 2-Butanone | DAILY AV | <= 1.85 mg/L | all year |
| 001 | 2-Butanone | DAILY MX | <= 4.81 mg/L | all year |
| 001 | 2-Butanone | DAILY AV | <= 4.63 lb/d | all year |
| 001 | 2-Butanone | DAILY MX | <= 12 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 26 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 52 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 65 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 130 lb/d | all year |
| 001 | Acetone | DAILY AV | <= 7.97 mg/L | all year |
| 001 | Acetone | DAILY MX | <= 30.2 mg/L | all year |
| 001 | Acetone | DAILY AV | <= 20 lb/d | all year |
| 001 | Acetone | DAILY MX | <= 75.6 lb/d | all year |
| 001 | Acetophenone | DAILY AV | <= .056 mg/L | all year |
| 001 | Acetophenone | DAILY MX | <= .114 mg/L | all year |
| 001 | Acetophenone | DAILY AV | <= .141 lb/d | all year |
| 001 | Acetophenone | DAILY MX | <= .285 lb/d | all year |
| TX1 | Whole effluent toxicity - retest #1 | 48HR MIN | report only | all year |
| TX1 | Whole effluent toxicity - retest #1 | MO AV MN | report only | all year |
| TX1 | Whole effluent toxicity - retest #2 | 48HR MIN | report only | all year |
| TX1 | Whole effluent toxicity - retest #2 | MO AV MN | report only | all year |
| TX1 | LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia) | 48HR MIN | report only | all year |
| TX1 | LF Pass/Fail Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopis bahia) | MO AV MN | report only | all year |
| TX1 | Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllina | 48HR MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Static Renewal 48Hr Acute Menidia beryllina | MO AV MN | report only | all year |
| TX1 | NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | 48HR MIN | report only | all year |
| TX1 | NOAEC Lethal Static Renewal 48HR Acute Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina | 48HR MIN | report only | all year |
| TX1 | NOAEC Lethal Static Renewal 48HR Acute Menidia beryllina | MO AV MN | report only | all year |
| TX1 | LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 48HR MIN | report only | all year |
| TX1 | LOAEC Lethal Survival Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX1 | LOAEC Lethal Survival Static Renewal 48Hr Acute Menidia beryllina | 48HR MIN | report only | all year |
| TX1 | LOAEC Lethal Survival Static Renewal 48Hr Acute 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 |
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