Yellowstone National Park County, Wyoming — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Yellowstone National Park County, WY?
In Yellowstone National Park County, Wyoming, public U.S. EPA records track 3 regulated facilities (#47 of 47 in Wyoming), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water NPDES permits, 7 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Yellowstone National Park County, WY 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Yellowstone National Park County, WY Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Yellowstone National Park County
ZIP Codes in Yellowstone National Park County
Top EPA Regulated Facilities in Yellowstone National Park County, WY
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 |
|---|---|---|---|---|
| YELLOWSTONE NATION PARK OLD FAITHFULL ESB FREE PREVIEW (LOW RISK) | OLD FAITHFUL WEST OF BUS BARN, YELLOWSTONE NATIONAL PARK, WY 82190 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| YELLOWSTON NATION PARK SERVICE CANYON WASTEWATER TREATMENT PLANT FREE PREVIEW (LOW RISK) | 1 MILE SOUTH EAST OF CANYON, YELLOWSTONE NATIONAL PARK, WY 82190 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| YELLOWSTONE NATIONAL PARK CANYON VISITOR CENTER FREE PREVIEW (LOW RISK) | CANYON, YELLOWSTONE NATIONAL PARK, WY 82190 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Yellowstone National Park County, Wyoming Environmental Due Diligence
How many EPA-regulated environmental sites are in Yellowstone National Park County, Wyoming?
Public U.S. EPA records track 3 regulated facilities in Yellowstone National Park County, Wyoming (ranking #47 of 47 jurisdictions in WY). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Yellowstone National Park County have the highest regulated facility density?
Within Yellowstone National Park County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Yellowstone National Park.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yellowstone National Park County?
Across Yellowstone National Park County, 3 facilities (100.0% 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 Yellowstone National Park County, WY?
Geologic indoor air screening places Yellowstone National Park 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 Yellowstone National Park County, WY?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water Act NPDES permits, and 0 impaired water dischargers in Yellowstone National Park County, alongside 7 historical FEMA federal disaster declarations (1 flood/storm events).
Does Yellowstone National Park County, WY have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Yellowstone National Park County indicates a LOW 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.