NPDES permit TX0128015 · Major NON-POTW · effective, expires 2029-08-06 · EPA's file as of 2026-09-19
Check this month's numbers before you fileLast period with anything received: 2026-08-31. Most often over: Zinc, total [as Zn] (6), Whole Effluent Toxicity [WET] - C. dubia (2).
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 |
|---|---|---|---|---|
| 002 | Oxygen, dissolved [DO] | MO MIN | >= 4 mg/L | all year |
| 002 | Oxygen demand, chem. [high level] [COD] | DAILY AV | <= 975 lb/d | all year |
| 002 | Oxygen demand, chem. [high level] [COD] | DAILY MX | <= 1483 lb/d | all year |
| 002 | pH | MINIMUM | >= 6 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Solids, total suspended | DAILY AV | <= 92 lb/d | all year |
| 002 | Solids, total suspended | DAILY MX | <= 172 lb/d | all year |
| 002 | Oil & Grease | DAILY AV | <= 45 lb/d | all year |
| 002 | Oil & Grease | DAILY MX | <= 67 lb/d | all year |
| 002 | Nitrogen, ammonia total [as N] | DAILY AV | <= 3 mg/L | all year |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 6 mg/L | all year |
| 002 | Copper, total [as Cu] | DAILY AV | <= .026 mg/L | all year |
| 002 | Copper, total [as Cu] | DAILY MX | <= .055 mg/L | all year |
| 002 | Copper, total [as Cu] | DAILY AV | <= .059 lb/d | all year |
| 002 | Copper, total [as Cu] | DAILY MX | <= .126 lb/d | all year |
| 002 | Zinc, total [as Zn] | DAILY AV | <= .25 mg/L | all year |
| 002 | Zinc, total [as Zn] | DAILY MX | <= .53 mg/L | all year |
| 002 | Zinc, total [as Zn] | DAILY AV | <= .57 lb/d | all year |
| 002 | Zinc, total [as Zn] | DAILY MX | <= 1.2 lb/d | all year |
| 002 | Aluminum, total [as Al] | DAILY AV | <= .83 mg/L | all year |
| 002 | Aluminum, total [as Al] | DAILY MX | <= 1.77 mg/L | all year |
| 002 | Aluminum, total [as Al] | DAILY AV | <= 1.9 lb/d | all year |
| 002 | Aluminum, total [as Al] | DAILY MX | <= 4 lb/d | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY AV | <= .275 MGD | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | <= .33 MGD | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 10 mg/L | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 25 mg/L | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY AV | <= 18 lb/d | all year |
| 002 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 45 lb/d | all year |
| TX2 | Whole Effluent Toxicity [WET] - C. dubia | 7 DA MIN | >= 81 % | all year |
| TX2 | Whole Effluent Toxicity [WET] - C. dubia | MO AV MN | >= 81 % | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX2 | IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX2 | IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7 DA MIN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AV MN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7 DA MIN | report only | all year |
| TX2 | IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | MO AV MN | report only | all year |
| TXB | LC50 Pass/Fail Static 24Hr Acute D. Pulex | SINGSAMP | report only | all year |
| TXB | 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