Powder River County, Wyoming — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Powder River County, Wyoming, public U.S. EPA records track 1 regulated facilities (#54 of 54 in Wyoming), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 0 Clean Water NPDES permits, 7 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Powder River 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📊 Powder River County, WY Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Powder River County
ZIP Codes in Powder River County
Top EPA Regulated Facilities in Powder River 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 |
|---|---|---|---|---|
| BROADUS IGA-TREATMENT PROCESS FOR VENDING MACHINE FREE PREVIEW (LOW RISK) | PO BOX 671, RANCHESTER, WY 82839 | LOW (8/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Powder River County, Wyoming Environmental Due Diligence
How many EPA-regulated environmental sites are in Powder River County, Wyoming?
Public U.S. EPA records track 1 regulated facilities in Powder River County, Wyoming (ranking #54 of 54 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 Powder River County have the highest regulated facility density?
Within Powder River County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Powder River.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Powder River County?
Across Powder River 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 Powder River County, WY?
Geologic indoor air screening places Powder River 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 Powder River County, WY?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 0 Clean Water Act NPDES permits, and 0 impaired water dischargers in Powder River County, alongside 7 historical FEMA federal disaster declarations (1 flood/storm events).
Does Powder River County, WY have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Powder River 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.