NPDES permit TX0068349 · Major NON-POTW · effective, expires 2030-04-11 · 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 (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 001 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 001 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 001 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 001 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 001 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 002 | pH | MINIMUM | >= 6 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Solids, total suspended | DAILY MX | <= 74.1 mg/L | all year |
| 002 | Solids, total suspended | DAILY AV | <= 62.1 lb/d | all year |
| 002 | Solids, total suspended | DAILY MX | <= 150.2 lb/d | all year |
| 002 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 002 | Oil & Grease | DAILY AV | <= 23 lb/d | all year |
| 002 | Oil & Grease | DAILY MX | <= 34 lb/d | all year |
| 002 | Nitrogen, organic total [as N] | DAILY MX | <= 13 mg/L | all year |
| 002 | Nitrogen, organic total [as N] | DAILY AV | <= 15 lb/d | all year |
| 002 | Nitrogen, organic total [as N] | DAILY MX | <= 30 lb/d | all year |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 7 mg/L | all year |
| 002 | Nitrogen, ammonia total [as N] | DAILY AV | <= 11.3 lb/d | all year |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 16 lb/d | all year |
| 002 | Phosphate, total [as PO4] | DAILY MX | <= 15 mg/L | all year |
| 002 | Cyanide, free [as free] | DAILY MX | <= .00557 mg/L | all year |
| 002 | Cyanide, free [as free] | DAILY AV | <= .00599 lb/d | all year |
| 002 | Cyanide, free [as free] | DAILY MX | <= .0127 lb/d | all year |
| 002 | Sulfide, total [as S] | DAILY MX | <= .4 mg/L | all year |
| 002 | Sulfide, total [as S] | DAILY AV | <= .45 lb/d | all year |
| 002 | Sulfide, total [as S] | DAILY MX | <= .9 lb/d | all year |
| 002 | Copper, total [as Cu] | DAILY MX | <= .0139 mg/L | all year |
| 002 | Copper, total [as Cu] | DAILY AV | <= .015 lb/d | all year |
| 002 | Copper, total [as Cu] | DAILY MX | <= .0317 lb/d | all year |
| 002 | Total purgeable halocarbons | DAILY MX | <= .2 mg/L | all year |
| 002 | Total purgeable halocarbons | DAILY AV | <= .22 lb/d | all year |
| 002 | Total purgeable halocarbons | DAILY MX | <= .46 lb/d | all year |
| 002 | BTEX | DAILY MX | <= .46 mg/L | all year |
| 002 | BTEX | DAILY AV | <= .31 lb/d | all year |
| 002 | BTEX | DAILY MX | <= 1.1 lb/d | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY AV | <= .273 MGD | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | <= .546 MGD | all year |
| 002 | Chlorine, total residual | INST MAX | < .1 mg/L | all year |
| 002 | Enterococci | DAILY AV | <= 35 CFU/100mL | all year |
| 002 | Enterococci | DAILY MX | <= 130 CFU/100mL | all year |
| 002 | Mercury, total [as Hg] | DAILY MX | <= .0000723 mg/L | all year |
| 002 | Mercury, total [as Hg] | DAILY AV | <= .0000776 lb/d | all year |
| 002 | Mercury, total [as Hg] | DAILY MX | <= .000159 lb/d | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 39.5 mg/L | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 45 lb/d | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 90 lb/d | 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 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 003 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 003 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 003 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 003 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 003 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 003 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 003 | Phenols | DAILY MX | <= .1 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 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 004 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 004 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 004 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 004 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 004 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 004 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 004 | Phenols | DAILY MX | <= .1 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 |
| 005 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 005 | pH | MINIMUM | >= 6 SU | all year |
| 005 | pH | MAXIMUM | <= 9 SU | all year |
| 005 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 005 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 005 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 005 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 005 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 005 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 005 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 005 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 005 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 005 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 005 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 006 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 006 | pH | MINIMUM | >= 6 SU | all year |
| 006 | pH | MAXIMUM | <= 9 SU | all year |
| 006 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 006 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 006 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 006 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 006 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 006 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 006 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 006 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 006 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 006 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 006 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 008 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 008 | pH | MINIMUM | >= 6 SU | all year |
| 008 | pH | MAXIMUM | <= 9 SU | all year |
| 008 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 008 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 008 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 008 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 008 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 008 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 008 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 008 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 008 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 008 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 008 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 010 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 150 mg/L | all year |
| 010 | pH | MINIMUM | >= 6 SU | all year |
| 010 | pH | MAXIMUM | <= 9 SU | all year |
| 010 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 010 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 010 | Nitrogen, organic total [as N] | DAILY MX | report only | all year |
| 010 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 010 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 010 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 010 | Total purgeable halocarbons | DAILY MX | <= .5 mg/L | all year |
| 010 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 010 | Phenols | DAILY MX | <= .1 mg/L | all year |
| 010 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 010 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 011 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 400 mg/L | all year |
| 011 | Oxygen demand, chem. [high level] [COD] | DAILY AV | <= 1565 lb/d | all year |
| 011 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 2478 lb/d | all year |
| 011 | Solids, total suspended | DAILY MX | <= 74.1 mg/L | all year |
| 011 | Solids, total suspended | DAILY AV | <= 171 lb/d | all year |
| 011 | Solids, total suspended | DAILY MX | <= 413 lb/d | all year |
| 011 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 011 | Oil & Grease | DAILY AV | <= 63 lb/d | all year |
| 011 | Oil & Grease | DAILY MX | <= 94 lb/d | all year |
| 011 | Nitrogen, organic total [as N] | DAILY MX | <= 13 mg/L | all year |
| 011 | Nitrogen, organic total [as N] | DAILY AV | <= 41 lb/d | all year |
| 011 | Nitrogen, organic total [as N] | DAILY MX | <= 83 lb/d | all year |
| 011 | Nitrogen, ammonia total [as N] | DAILY MX | <= 7 mg/L | all year |
| 011 | Nitrogen, ammonia total [as N] | DAILY AV | <= 31 lb/d | all year |
| 011 | Nitrogen, ammonia total [as N] | DAILY MX | <= 44 lb/d | all year |
| 011 | Phosphate, total [as PO4] | DAILY MX | <= 15 mg/L | all year |
| 011 | Cyanide, free [as free] | DAILY MX | <= .0185 mg/L | all year |
| 011 | Cyanide, free [as free] | DAILY AV | <= .055 lb/d | all year |
| 011 | Cyanide, free [as free] | DAILY MX | <= .116 lb/d | all year |
| 011 | Sulfide, total [as S] | DAILY MX | <= .4 mg/L | all year |
| 011 | Sulfide, total [as S] | DAILY AV | <= 1.24 lb/d | all year |
| 011 | Sulfide, total [as S] | DAILY MX | <= 2.48 lb/d | all year |
| 011 | Total purgeable halocarbons | DAILY MX | <= .2 mg/L | all year |
| 011 | Total purgeable halocarbons | DAILY AV | <= .61 lb/d | all year |
| 011 | Total purgeable halocarbons | DAILY MX | <= 1.27 lb/d | all year |
| 011 | BTEX | DAILY MX | <= .46 mg/L | all year |
| 011 | BTEX | DAILY AV | <= .85 lb/d | all year |
| 011 | BTEX | DAILY MX | <= 3.03 lb/d | all year |
| 011 | Flow, in conduit or thru treatment plant | DAILY AV | <= .75 MGD | all year |
| 011 | Flow, in conduit or thru treatment plant | DAILY MX | <= 1.5 MGD | all year |
| 011 | Chlorine, total residual | INST MAX | <= .1 mg/L | all year |
| 011 | Enterococci | DAILY AV | <= 35 CFU/100mL | all year |
| 011 | Enterococci | DAILY MX | <= 130 CFU/100mL | all year |
| 011 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 106 mg/L | all year |
| 011 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 332 lb/d | all year |
| 011 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 664 lb/d | all year |
| TX11 | Whole effluent toxicity - retest #1 | 7 DA MIN | report only | all year |
| TX11 | Whole effluent toxicity - retest #1 | MO AV MN | report only | all year |
| TX11 | Whole effluent toxicity - retest #2 | 7 DA MIN | report only | all year |
| TX11 | Whole effluent toxicity - retest #2 | MO AV MN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | MO AV MN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia) | 7 DA MIN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia) | MO AV MN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX11 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX11 | IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX11 | IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX11 | IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX11 | IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX11 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX11 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX11 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX11 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX2 | Whole effluent toxicity - retest #1 | 7 DA MIN | report only | all year |
| TX2 | Whole effluent toxicity - retest #1 | MO AV MN | report only | all year |
| TX2 | Whole effluent toxicity - retest #2 | 7 DA MIN | report only | all year |
| TX2 | Whole effluent toxicity - retest #2 | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia) | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia) | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7 DA MIN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | MO AV MN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7 DA MIN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | MO AV MN | report only | all year |
| TXB | Whole effluent toxicity - retest #1 | SINGSAMP | report only | all year |
| TXB | Whole effluent toxicity - retest #2 | SINGSAMP | report only | all year |
| TXB | LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | SINGSAMP | report only | all year |
| TXB | LC50 Pass/Fail Static 24Hr Acute Menidia menidia | SINGSAMP | report only | all year |
| TXK | Whole effluent toxicity - retest #1 | SINGSAMP | report only | all year |
| TXK | Whole effluent toxicity - retest #2 | SINGSAMP | report only | all year |
| TXK | LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | SINGSAMP | report only | all year |
| TXK | LC50 Pass/Fail Static 24Hr Acute Menidia menidia | SINGSAMP | report only | all year |
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