Lemhi County, Idaho — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Lemhi County, ID?
In Lemhi County, Idaho, public U.S. EPA records track 48 regulated facilities (#56 of 83 in Idaho), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 46 Clean Water NPDES permits, 11 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Lemhi County, ID 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Lemhi County, ID Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Lemhi County
ZIP Codes in Lemhi County
Top EPA Regulated Facilities in Lemhi County, ID
100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).
| Facility Name / Hazard Type | Sector Location (Street Redacted) | Risk Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • SALMON, ID (ZIP 83467 Sector) | MODERATE (38/100) | Violation Identified (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • SALMON, ID (ZIP 83467 Sector) | MODERATE (37/100) | Violation Identified (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SALMON, ID (ZIP 83467 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| BIG SPRINGS ENHANCEMENT PROJECT FREE PREVIEW (LOW RISK) | LEMHI COUNTY IDAHO, 2.5 MILES NORTHWEST OF LEADORE, LEADORE, ID 83464 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| 2L TRAILS HIGHWAY 93 SOUTH FREE PREVIEW (LOW RISK) | HIGWAY 93, SALMON, ID 83467 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| HWY 29 CULVERT REPLACEMENT FREE PREVIEW (LOW RISK) | HIGHWAY 29, NEAR HIGHWAY 28, LEADORE, ID 83464 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| PAGE FREE PREVIEW (LOW RISK) | CUSTER ROAD (BETWEEN HOOPER LANE AND FUREY LANE), MAY, ID 83253 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • LEADORE, ID (ZIP 83464 Sector) | LOW (18/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MAY, ID (ZIP 83253 Sector) | LOW (18/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • ELLIS, ID (ZIP 83235 Sector) | LOW (18/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • SALMON, ID (ZIP 83467 Sector) | LOW (18/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • LEADORE, ID (ZIP 83467 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Lemhi County, Idaho Environmental Due Diligence
How many EPA-regulated environmental sites are in Lemhi County County, Idaho?
Public U.S. EPA records track 48 regulated facilities in Lemhi County County, Idaho (ranking #56 of 83 jurisdictions in ID). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 2 (4.2%) have active non-compliance quarters.
Which ZIP codes and cities in Lemhi County County have the highest regulated facility density?
Within Lemhi County County, the highest concentrations of EPA-tracked facilities are located in ZIP 83464 (Leadore, 12 sites), ZIP 83253 (May, 10 sites), spanning municipal corridors including Leadore (12 sites), May (9 sites), Elk Bend (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Lemhi County County?
Across Lemhi County County, 0 facilities (0.0% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Lemhi County County, ID?
Geologic indoor air screening places Lemhi County County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Lemhi County County, ID?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 46 Clean Water Act NPDES permits, and 33 impaired water dischargers in Lemhi County County, alongside 11 historical FEMA federal disaster declarations (3 flood/storm events).
Does Lemhi County, ID have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Lemhi County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.