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Sewage treatment plant, major discharger, Houston, Texas. NPDES permit TX0088838 expired Aug 16, 2026; its limits still apply. Last 12 months: over a limit 25 times (last September 2026), 1 of 18 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Copper, total [as Cu], daily average | .0362 mg/L | ≤ .023 mg/L | 57% |
| October 2025 | Copper, total [as Cu], daily maximum | .0547 mg/L | ≤ .048 mg/L | 14% |
| November 2025 | Copper, total [as Cu], daily average | .0356 mg/L | ≤ .023 mg/L | 55% |
| November 2025 | Copper, total [as Cu], daily maximum | .0548 mg/L | ≤ .048 mg/L | 14% |
| December 2025 | Copper, total [as Cu], daily average | .0438 mg/L | ≤ .023 mg/L | 90% |
| December 2025 | Copper, total [as Cu], daily maximum | .0767 mg/L | ≤ .048 mg/L | 60% |
| January 2026 | Copper, total [as Cu], daily average | .06 mg/L | ≤ .023 mg/L | 161% |
| January 2026 | Copper, total [as Cu], daily maximum | .081 mg/L | ≤ .048 mg/L | 69% |
| February 2026 | Copper, total [as Cu], daily average | .0588 mg/L | ≤ .023 mg/L | 156% |
| February 2026 | Copper, total [as Cu], daily maximum | .11 mg/L | ≤ .048 mg/L | 129% |
| March 2026 | Copper, total [as Cu], daily average | .0596 mg/L | ≤ .023 mg/L | 159% |
| March 2026 | Copper, total [as Cu], daily maximum | .097 mg/L | ≤ .048 mg/L | 102% |
| April 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 67 mg/L | ≤ 25 mg/L | 168% |
| April 2026 | Copper, total [as Cu], daily average | .056 mg/L | ≤ .023 mg/L | 143% |
| April 2026 | Copper, total [as Cu], daily maximum | .085 mg/L | ≤ .048 mg/L | 77% |
| May 2026 | Copper, total [as Cu], daily average | .06 mg/L | ≤ .023 mg/L | 161% |
| May 2026 | Copper, total [as Cu], daily maximum | .1 mg/L | ≤ .048 mg/L | 108% |
| June 2026 | Copper, total [as Cu], daily average | .053 mg/L | ≤ .023 mg/L | 130% |
| June 2026 | Copper, total [as Cu], daily maximum | .085 mg/L | ≤ .048 mg/L | 77% |
| July 2026 | Copper, total [as Cu], daily average | .069 mg/L | ≤ .023 mg/L | 200% |
| July 2026 | Copper, total [as Cu], daily maximum | .15 mg/L | ≤ .048 mg/L | 213% |
| August 2026 | Copper, total [as Cu], daily average | .0524 mg/L | ≤ .023 mg/L | 128% |
| August 2026 | Copper, total [as Cu], daily maximum | .97 mg/L | ≤ .048 mg/L | 1921% |
| September 2026 | Copper, total [as Cu], daily average | .054 mg/L | ≤ .023 mg/L | 135% |
| September 2026 | Copper, total [as Cu], daily maximum | .11 mg/L | ≤ .048 mg/L | 129% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | monthly minimum | ≥ 6 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year | 001 |
| Solids, total suspended | daily average | ≤ 175 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 2 mg/L | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 3 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 23 lb/d | Apr–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily average | ≤ 35 lb/d | Jan, Feb, Mar, Nov, Dec | 001 |
| Copper, total [as Cu] | daily average | ≤ .023 mg/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .048 mg/L | all year | 001 |
| Copper, total [as Cu] | daily average | ≤ .269 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | 2-hour peak | ≤ 2917 gal/min | all year | 001 |
| Flow, in conduit or thru treatment plant | annual average | ≤ 1.4 MGD | all year | 001 |
| Chlorine, total residual | instantaneous maximum | < .1 mg/L | all year | 001 |
| Chlorine, total residual | monthly minimum | ≥ 1 mg/L | all year | 001 |
| E. coli | daily average | ≤ 63 CFU/100mL | all year | 001 |
| E. coli | daily maximum | ≤ 200 CFU/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 10 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily average | ≤ 117 lb/d | all year | 001 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (%) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | monthly average minimum | report only (%) | all year | TX1 |
| Whole effluent toxicity - retest #1 | single sample | report only (pass=0;fail=1) | all year | TXA |
| Whole effluent toxicity - retest #2 | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | single sample | report only (pass=0;fail=1) | all year | TXA |
Cited limits by parameter: Texas's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TX0088838 · MCP: https://passage-data.com/mcp