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Silver Ores, Wallace, Idaho. NPDES permit ID0025429 expired Mar 30, 1995; its limits still apply. Last 12 months: no values over a limit, 4 of 13 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 | 30-day average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Cadmium, total [as Cd] | 30-day average | ≤ .05 mg/L | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | ≤ .1 mg/L | all year | 001 |
| Copper, total [as Cu] | 30-day average | ≤ .15 mg/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .3 mg/L | all year | 001 |
| Lead, total [as Pb] | 30-day average | ≤ .3 mg/L | all year | 001 |
| Lead, total [as Pb] | daily maximum | ≤ .6 mg/L | all year | 001 |
| Zinc, total [as Zn] | 30-day average | ≤ .75 mg/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 1.5 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 001 |
| Mercury, total [as Hg] | 30-day average | ≤ .001 mg/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .002 mg/L | all year | 001 |
| pH | minimum | report only (SU) | Apr, Oct | REC |
| pH | minimum | report only (SU) | Apr, Oct | REC |
| pH | maximum | report only (SU) | Apr, Oct | REC |
| pH | maximum | report only (SU) | Apr, Oct | REC |
| pH | minimum | report only (SU) | Apr, Oct | REC |
| pH | minimum | report only (SU) | Apr, Oct | REC |
| pH | maximum | report only (SU) | Apr, Oct | REC |
| pH | maximum | report only (SU) | Apr, Oct | REC |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Cadmium, total [as Cd] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Copper, total [as Cu] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Copper, total [as Cu] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Copper, total [as Cu] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Copper, total [as Cu] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Lead, total [as Pb] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Lead, total [as Pb] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Lead, total [as Pb] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Lead, total [as Pb] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Zinc, total [as Zn] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Zinc, total [as Zn] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Zinc, total [as Zn] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Zinc, total [as Zn] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Flow, in conduit or thru treatment plant | instantaneous maximum | report only (MGD) | Apr, Oct | REC |
| Flow, in conduit or thru treatment plant | instantaneous maximum | report only (MGD) | Apr, Oct | REC |
| Flow, in conduit or thru treatment plant | instantaneous maximum | report only (MGD) | Apr, Oct | REC |
| Flow, in conduit or thru treatment plant | instantaneous maximum | report only (MGD) | Apr, Oct | REC |
| Mercury, total [as Hg] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Mercury, total [as Hg] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Mercury, total [as Hg] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
| Mercury, total [as Hg] | instantaneous maximum | report only (mg/L) | Apr, Oct | REC |
Cited limits by parameter: Idaho's rules and the federal ones.
Same industry: the 10 Metal Mining permits in Idaho.
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Your permit document is the final word. As JSON: /api/v1/permits/ID0025429 · MCP: https://passage-data.com/mcp