Williamson County, Illinois — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Williamson County, IL?
In Williamson County, Illinois, public U.S. EPA records track 38 regulated facilities (#135 of 193 in Illinois), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 7 Clean Water NPDES permits, 5 FEMA Federal Disaster Declarations (5 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Williamson County, IL 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Williamson County, IL Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Williamson County
ZIP Codes in Williamson County
Top EPA Regulated Facilities in Williamson County, IL
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 • MARION, IL (ZIP 62959 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MARION, IL (ZIP 62959 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • HERRIN, IL (ZIP 62948 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • MARION, IL (ZIP 62959 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HERRIN, IL (ZIP 62948 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MARION, IL (ZIP 62959 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CAMBRIA, IL (ZIP 62915 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MARION, IL (ZIP 62959 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| BLADES BODY SHOP FREE PREVIEW (LOW RISK) | 1101 S COURT ST, MARION, IL 62959 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| WRECK-AMENDED FREE PREVIEW (LOW RISK) | 15019 PACKER LN, CARTERVILLE, IL 62918 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| ROB SPILLER J.C. PROPERTIES FREE PREVIEW (LOW RISK) | 900 MARILYN DRIVE, JOHNSTON CITY, IL 62951 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| MARION GAS FREE PREVIEW (LOW RISK) | 1801 W MAIN, MARION, IL 62959 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Williamson County, Illinois Environmental Due Diligence
How many EPA-regulated environmental sites are in Williamson County County, Illinois?
Public U.S. EPA records track 38 regulated facilities in Williamson County County, Illinois (ranking #135 of 193 jurisdictions in IL). 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 Williamson County County have the highest regulated facility density?
Within Williamson County County, the highest concentrations of EPA-tracked facilities are located in ZIP 62948 (Herrin, 72 sites), ZIP 62915 (Cambria, 5 sites), ZIP 62949 (Hurst, 5 sites), spanning municipal corridors including Herrin (73 sites), Crainville (5 sites), Cambria (5 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Williamson County County?
Across Williamson 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 Williamson County County, IL?
Geologic indoor air screening places Williamson 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 Williamson County County, IL?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 7 Clean Water Act NPDES permits, and 0 impaired water dischargers in Williamson County County, alongside 5 historical FEMA federal disaster declarations (5 flood/storm events).
Does Williamson County, IL have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Williamson County indicates a MODERATE 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.