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Primary Copper, Amarillo, Texas. NPDES permit TX0118460, in force until Dec 21, 2028. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | daily average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year |
| Arsenic, total [as As] | daily maximum | ≤ .3 mg/L | all year |
| Barium, total [as Ba] | daily maximum | ≤ 4 mg/L | all year |
| Copper, total [as Cu] | daily maximum | ≤ 1.266 mg/L | all year |
| Lead, total [as Pb] | daily maximum | ≤ 1.5 mg/L | all year |
| Nickel, total [as Ni] | daily maximum | ≤ 3 mg/L | all year |
| Silver, total [as Ag] | daily maximum | ≤ .18 mg/L | all year |
| Zinc, total [as Zn] | daily maximum | ≤ 2 mg/L | all year |
| Selenium, total [as Se] | daily maximum | ≤ .2 mg/L | all year |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
Cited limits by parameter: Texas's rules and the federal ones.
Same industry: the 13 Primary Metal Industries 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/TX0118460 · MCP: https://passage-data.com/mcp