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Semiconductors And Related Devices, major discharger, Taylor, Texas. NPDES permit TX0142646, in force until Sep 16, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | monthly minimum | ≥ 5 mg/L | 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 |
| Oil & Grease | daily average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | ≤ .5 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 |
| 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 |
| Fluoride, total [as F] | daily average | ≤ 17.4 mg/L | all year | 001 |
| Fluoride, total [as F] | daily maximum | ≤ 32 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | ≤ 10.5 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 10.5 MGD | 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 |
| Organics, total toxic [TTO] | daily maximum | ≤ 1.37 ug/L | 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 |
| 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.
Same industry: the 3 Electronic and Other Electrical Equipment permits in Texas.
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On EPA ECHO: Facility report · DMR history
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