NPDES permit TX0007889 · Major FEDERAL · effective, expires 2027-08-08 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-08-31. Most often over: Enterococci (3).
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 AV | <= 751 lb/d | all year |
| 001 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 1168 lb/d | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 250 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 563 lb/d | all year |
| 001 | Oil & Grease | DAILY AV | <= 23.4 lb/d | all year |
| 001 | Oil & Grease | DAILY MX | <= 45.62 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 12 mg/L | all year |
| 001 | Cyanide, free [as free] | DAILY AV | <= .05 lb/d | all year |
| 001 | Cyanide, free [as free] | DAILY MX | <= .11 lb/d | all year |
| 001 | Cyanide, free [amenable to chlorination] | DAILY AV | <= .21 lb/d | all year |
| 001 | Cyanide, free [amenable to chlorination] | DAILY MX | <= .42 lb/d | all year |
| 001 | Cadmium, total [as Cd] | DAILY AV | <= .38 lb/d | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .8 lb/d | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY AV | <= .263 lb/d | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= .55 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY AV | <= 1.38 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 2.24 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .22 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .47 lb/d | all year |
| 001 | Lead, total [as Pb] | DAILY AV | <= .94 lb/d | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= 1.98 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY AV | <= .88 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 1.98 lb/d | all year |
| 001 | Silver, total [as Ag] | DAILY AV | <= .04 lb/d | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .09 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= 1.68 lb/d | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= 3.56 lb/d | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | <= 1.5 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= 3.75 MGD | all year |
| 001 | Chlorine, total residual | MO MIN | >= 1 mg/L | all year |
| 001 | Chlorine, total residual | MO MAX | <= 4 mg/L | all year |
| 001 | Enterococci | DAILY AV | <= 35 CFU/100mL | all year |
| 001 | Enterococci | DAILY MX | <= 104 CFU/100mL | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 20 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 250 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 563 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 menidia | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7 DA MIN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | 7 DA MIN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 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 Reproduction Static Renewal 7 Day Chronic Menidia menidia | 7 DA MIN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 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 menidia | SINGSAMP | report only | all year |
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