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Metal Mining — NPDES discharge permits in Idaho

Of the 10 permits in EPA's SIC 10 in ID, 2 went over a limit between 2025-10-01 and 2026-09-30 (Copper, total recoverable: 1; Lead, total recoverable: 1; pH: 1). 10 are past the expiry date EPA's file holds; 0 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.

FacilityLast 12 monthsPermit
U.S. SILVER CORP - IDAHO INC
ID0000027 · major · Silver Ores
Over a limit 2×: Lead, total recoverable (1×), Copper, total recoverable (1×)Permit past the expiry date EPA's file holds
HECLA LTD
ID0000167 · Silver Ores
Over a limit 1×: pH (1×)Permit past the expiry date EPA's file holds
HECLA LIMITED
ID0026468 · major · Gold Ores
No value over a limitPermit past the expiry date EPA's file holds
HECLA LTD
ID0000175 · major · Silver Ores
No value over a limitPermit past the expiry date EPA's file holds
IDAHO COBALT PROJECT
ID0028321 · major · Ferroalloy Ores, Except Vanadium
No value over a limit; 10 required values not reportedPermit past the expiry date EPA's file holds
MERIDIAN BEARTRACK COMPANY
ID0027022 · major · Gold Ores
No value over a limitPermit past the expiry date EPA's file holds
NORANDA MINING INC
ID0025259 · Ferroalloy Ores, Except Vanadium
No value over a limitPermit past the expiry date EPA's file holds
SILVER OPPORTUNITY PARTNERS LLC
ID0000060 · Silver Ores
No value over a limitPermit past the expiry date EPA's file holds
THOMPSON CREEK MINING COMPANY
ID0025402 · major · Ferroalloy Ores, Except Vanadium
No value over a limitPermit past the expiry date EPA's file holds
U.S. SILVER CORP - IDAHO INC
ID0025429 · Silver Ores
No value over a limitPermit past the expiry date EPA's file holds

The record is EPA's ICIS-NPDES file of 2026-10-15: values filed against each limit between Oct 1, 2025 and Sep 30, 2026. No reports on file may be EPA's gap, not the facility's.

For programs and AI agents: this screen as JSON at /api/v1/permits?state=ID&sic=10, narrowed with &over_limit=true, &parameter=phosphorus or &renewal=due; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states