Clark County, Idaho — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Clark County, ID?
In Clark County, Idaho, public U.S. EPA records track 4 regulated facilities (#87 of 87 in Idaho), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 3 Clean Water NPDES permits, 11 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Clark 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📊 Clark County, ID Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Clark County
ZIP Codes in Clark County
Top EPA Regulated Facilities in Clark 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 • DUBOIS, ID (ZIP 83423 Sector) | MODERATE (35/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| FY 18 D6 BALLAST STABILIZATION FREE PREVIEW (LOW RISK) | I 15 MP 172.4 TO 180.7, SPENCER, ID 83446 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| FY18 D6 BALLAST STABALIZATION FREE PREVIEW (LOW RISK) | I-15 MP 172.4 TO 180.7, SPENCER, ID 83446 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| KILGORE PROJECT FREE PREVIEW (LOW RISK) | 5 MILES NORTHWEST OF KILGORE, IDAHO, KILGORE, ID 83423 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Clark County, Idaho Environmental Due Diligence
How many EPA-regulated environmental sites are in Clark County County, Idaho?
Public U.S. EPA records track 4 regulated facilities in Clark County County, Idaho (ranking #87 of 87 jurisdictions in ID). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 1 (25.0%) have active non-compliance quarters.
Which ZIP codes and cities in Clark County County have the highest regulated facility density?
Within Clark County County, the highest concentrations of EPA-tracked facilities are located in ZIP 83446 (Spencer, 3 sites), spanning municipal corridors including Spencer (3 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Clark County County?
Across Clark 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 Clark County County, ID?
Geologic indoor air screening places Clark 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 Clark County County, ID?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 3 Clean Water Act NPDES permits, and 2 impaired water dischargers in Clark County County, alongside 11 historical FEMA federal disaster declarations (3 flood/storm events).
Does Clark County, ID have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Clark County indicates a MODERATE shrink-swell risk signal and steel pipe corrosivity rated Moderate. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.