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Electric Services, major discharger, Mission, Texas. NPDES permit TX0116785 expired Jul 27, 2025; its limits still apply. Last 12 months: no values over a limit, 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 001 |
| Solids, total suspended | daily average | ≤ 451 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 1502 lb/d | all year | 001 |
| Oil & Grease | daily average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 001 |
| Oil & Grease | daily average | ≤ 225 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 300 lb/d | all year | 001 |
| Magnesium, total [as Mg] | daily maximum | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily average | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily average | report only (lb/d) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (lb/d) | all year | 001 |
| Sulfate, total [as SO4] | daily average | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily average | ≤ 24980 lb/d | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | ≤ 52844 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily average | ≤ .2 mg/L | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ .2 mg/L | all year | 001 |
| Chromium, total [as Cr] | daily average | ≤ 3 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 3 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily average | ≤ 1 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 1 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily average | ≤ 15 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 15 lb/d | all year | 001 |
| Selenium, total [as Se] | daily average | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 1.8 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 1.8 MGD | all year | 001 |
| Chlorine, free available | daily average | ≤ .2 mg/L | all year | 001 |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 001 |
| Chlorine, free available | daily average | ≤ 3 lb/d | all year | 001 |
| Chlorine, free available | daily maximum | ≤ 7.51 lb/d | all year | 001 |
| Solids, total dissolved | daily average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily average | report only (lb/d) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| Whole effluent toxicity - retest #1 | 7-day average | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #1 | 7-day average | 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 #1 | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 7-day average | report only (pass=0;fail=1) | all year | TX1 |
| Whole effluent toxicity - retest #2 | 7-day average | 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 |
| 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 Daphnia magna | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Daphnia magna | 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 average | 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 Daphnia magna | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Daphnia magna | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day average | 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 Daphnia magna | 7-day minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Daphnia magna | monthly average minimum | report only (%) | all year | TX1 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day average | 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 Daphnia magna | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Daphnia magna | 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 average | 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 Daphnia magna | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Daphnia magna | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 7-day average | 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 Daphnia magna | 7-day minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Daphnia magna | monthly average minimum | report only (%) | all year | TX1 |
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 7-day average | 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 |
| Daphnia magna survival 24 Hr Acute WET | 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.
Same industry: the 87 Electric Services permits in Texas.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TX0116785 · MCP: https://passage-data.com/mcp