Washington County, Illinois — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Washington County, Illinois, public U.S. EPA records track 167 regulated facilities (#76 of 193 in Illinois), including 2 (1.2%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 19 Safe Drinking Water (SDWIS) facilities, 54 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Washington 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📊 Washington County, IL Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Washington County
Top EPA Regulated Facilities in Washington 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 • MARISSA, IL (ZIP 62257 Sector) | MODERATE (58/100) | Violation Identified (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • OKAWVILLE, IL (ZIP 62271 Sector) | MODERATE (53/100) | Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • RADOM, IL (ZIP 62876 Sector) | MODERATE (40/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • NASHVILLE, IL (ZIP 62263 Sector) | MODERATE (40/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • NASHVILLE, IL (ZIP 62263 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • NASHVILLE, IL (ZIP 62263 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • DU BOIS, IL (ZIP 62831 Sector) | MODERATE (38/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • CENTRALIA, IL (ZIP 62801 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| SISCO CORP FREE PREVIEW (LOW RISK) | 1520 S MILL, NASHVILLE, IL 62263 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| MEIER CHEVROLET BUICK FREE PREVIEW (LOW RISK) | 477 E ST LOUIS ST, NASHVILLE, IL 62263 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| MORGANTOWN MACHINE & HYD FREE PREVIEW (LOW RISK) | NATIONAL MINE RD, NASHVILLE, IL 62263 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| DOLLAR GENERAL STORE 9637 FREE PREVIEW (LOW RISK) | 900 HEN HOUSE RD, OKAWVILLE, IL 62271 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Washington County, Illinois Environmental Due Diligence
How many EPA-regulated environmental sites are in Washington County, Illinois?
Public U.S. EPA records track 167 regulated facilities in Washington County, Illinois (ranking #76 of 193 jurisdictions in IL). Of those, 2 (1.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 12 (7.2%) have active non-compliance quarters.
Which ZIP codes and cities in Washington County have the highest regulated facility density?
Within Washington County, the highest concentrations of EPA-tracked facilities are located in ZIP 62263 (Nashville, 105 sites), ZIP 62236 (Nashville, 79 sites), ZIP 62808 (Ashley, 12 sites), spanning municipal corridors including Nashville (104 sites), Ashley (12 sites), Hoyleton (11 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Washington County?
Across Washington County, 52 facilities (31.1% 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 Washington County, IL?
Geologic indoor air screening places Washington 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 Washington County, IL?
Federal records track 19 Safe Drinking Water (SDWIS) facilities, 54 Clean Water Act NPDES permits, and 9 impaired water dischargers in Washington County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).
Does Washington County, IL have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Washington County indicates a HIGH 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.