NPDES permit TX0062936 · Major NON-POTW · effective, expires 2031-03-20 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (24), Solids, total suspended (12), BOD, 5-day, 20 deg. C (10).
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 | Conductivity | DAILY AV | report only | all year |
| 001 | Conductivity | DAILY MX | report only | all year |
| 001 | Oxygen, dissolved [DO] | MO MIN | >= 6 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY AV | <= 16 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 26 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY AV | <= 454 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 738 lb/d | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 15 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 30 mg/L | all year |
| 001 | Solids, total suspended | DAILY AV | <= 376 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 751 lb/d | all year |
| 001 | Oil & Grease | DAILY AV | <= 8 mg/L | all year |
| 001 | Oil & Grease | DAILY MX | <= 14 mg/L | all year |
| 001 | Oil & Grease | DAILY AV | <= 227 lb/d | all year |
| 001 | Oil & Grease | DAILY MX | <= 376 lb/d | all year |
| 001 | Nitrogen, total [as N] | DAILY AV | <= 103 mg/L | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | <= 147 mg/L | all year |
| 001 | Nitrogen, total [as N] | DAILY AV | <= 2922 lb/d | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | <= 4171 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 1 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 4 mg/L | Jan, Feb, Mar, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 2 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 6 mg/L | Jan, Feb, Mar, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 29 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY AV | <= 113 lb/d | Jan, Feb, Mar, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 58 lb/d | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 170 lb/d | Jan, Feb, Mar, Nov, Dec |
| 001 | Phosphorus, total [as P] | DAILY AV | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY AV | <= 144.89 lb/d | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | <= 44100 lb/yr | all year |
| 001 | Sulfate, total [as SO4] | DAILY AV | <= 312 mg/L | all year |
| 001 | Sulfate, total [as SO4] | DAILY MX | <= 661 mg/L | all year |
| 001 | Sulfate, total [as SO4] | DAILY AV | <= 9113 lb/d | all year |
| 001 | Sulfate, total [as SO4] | DAILY MX | <= 19306 lb/d | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY AV | report only | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | report only | all year |
| 001 | Copper, total [as Cu] | DAILY AV | report only | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | DAILY AV | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= .15 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= .317 mg/L | all year |
| 001 | Chloride | DAILY AV | report only | all year |
| 001 | Chloride | DAILY MX | report only | all year |
| 001 | Chloride | DAILY AV | report only | all year |
| 001 | Chloride | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | <= 3.5 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= 5 MGD | all year |
| 001 | Chlorine, total residual | INST MAX | < .1 mg/L | all year |
| 001 | Chlorine, total residual | MO MIN | >= 1 mg/L | all year |
| 001 | E. coli | DAILY AV | <= 126 CFU/100mL | all year |
| 001 | E. coli | DAILY MX | <= 394 CFU/100mL | all year |
| 001 | Solids, total dissolved | DAILY AV | report only | all year |
| 001 | Solids, total dissolved | DAILY MX | report only | all year |
| 001 | Solids, total dissolved | DAILY AV | report only | all year |
| 001 | Solids, total dissolved | DAILY MX | report only | all year |
| 001 | Mercury, total [as Hg] | DAILY AV | report only | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | report only | all year |
| 001 | Coliform, fecal general | DAILY MX | <= 200 #/100mL | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 5 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 10 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 146 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 292 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 | Whole Effluent Toxicity [WET] - C. dubia | 7 DA MIN | >= 98 % | all year |
| TX1 | Whole Effluent Toxicity [WET] - C. dubia | MO AV MN | >= 98 % | all year |
| TX1 | Whole Effluent Toxicity [WET] - C. dubia | 7 DA MIN | >= 80 % | all year |
| TX1 | Whole Effluent Toxicity [WET] - C. dubia | MO AV MN | >= 80 % | all year |
| TX1 | Whole Effluent Toxicity [WET] - P. promelas | 7 DA MIN | >= 98 % | all year |
| TX1 | Whole Effluent Toxicity [WET] - P. promelas | MO AV MN | >= 98 % | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 7 DA MIN | report only | all year |
| TX1 | Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | MO AV MN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX1 | LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TXA | LC50 Pass/Fail Static 24Hr Acute D. Pulex | SINGSAMP | report only | all year |
| TXA | LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 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