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Stephenson County, Illinois — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Stephenson County, IL?

In Stephenson County, Illinois, public U.S. EPA records track 388 regulated facilities (#36 of 193 in Illinois), including 8 (2.1%) High-Risk sites and $3,075 in federal penalties. Countywide due diligence also covers 61 Safe Drinking Water (SDWIS) facilities, 98 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).

Total EPA Sites (#36/193)
388
High-Risk (2.1% vs 1.3% State)
8
Active Violators (5.9%)
23
Drinking & Clean Water
159
Federal Penalties
$3,075

Stephenson 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
🌊 Flood Zone & FEMA Disaster History
5 County FEMA Declarations (5 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: MODERATE • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
61 SDWIS Systems • 98 NPDES Permits
🔒 28 Impaired Water (303d) & 35 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Stephenson County, IL Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 135 (34.8%)
Clean Water (NPDES) & Drinking Water (SDWIS) 159 (41.0%)
Active EPA Non-Compliance Dockets 23 (5.9%)
High-Risk Enforcement Facilities 8 (2.1%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (73.9/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 3/10 • Low Hazard
🌪️ Severe Wind / Storm 7/10 • High Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Stephenson County High-Risk % 2.1%
Illinois (IL) Statewide Avg 1.3%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
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Top EPA Regulated Facilities in Stephenson 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).

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Facility Name / Hazard Type Sector Location (Street Redacted) Risk Tier & Score Compliance Status Enforcement / Unlock
🔒 Locked High-Risk EPA Enforcement Record #1 🔒 Exact Street & Parcel Redacted • RIDOTT, IL (ZIP 61067 Sector) HIGH (69/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • DAKOTA, IL (ZIP 61018 Sector) HIGH (64/100) Significant Violation (9 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • FREEPORT, IL (ZIP 61032 Sector) HIGH (64/100) Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • GERMAN VALLEY, IL (ZIP 61039 Sector) HIGH (64/100) Significant Violation (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • DAVIS, IL (ZIP 61019 Sector) HIGH (64/100) Significant Violation (7 qtrs NC) 🔒 7 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • FREEPORT, IL (ZIP 61032 Sector) MODERATE (57/100) Violation Identified (6 qtrs NC) 🔒 6 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • FREEPORT, IL (ZIP 61032 Sector) MODERATE (48/100) Violation (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • FREEPORT, IL (ZIP 61032 Sector) MODERATE (46/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
W.E.K. HOLDING COMPANY FREE PREVIEW (LOW RISK) 1235 SOUTH ADAMS AVENUE, FREEPORT, IL 61032 LOW (20/100) No Violation Identified (0 qtrs NC) $0
DITZLER COLLISION SVC FREE PREVIEW (LOW RISK) 100 E NORTH ST, PEARL CITY, IL 61062 LOW (16/100) No Violation Identified (0 qtrs NC) $0
EASTSIDE PROPERTY-121 S. HANCOCK FREE PREVIEW (LOW RISK) 121 S HANCOCK, FREEPORT, IL 61032 LOW (16/100) No Violation Identified (0 qtrs NC) $0
MITEK GROUP FREE PREVIEW (LOW RISK) 1 MITEK PLAZA, WINSLOW, IL 61089 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 376 Additional Regulated & Enforcement Records in Stephenson County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Stephenson County, Illinois Environmental Due Diligence

How many EPA-regulated environmental sites are in Stephenson County, Illinois?

Public U.S. EPA records track 388 regulated facilities in Stephenson County, Illinois (ranking #36 of 193 jurisdictions in IL). Of those, 8 (2.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 23 (5.9%) have active non-compliance quarters.

Which ZIP codes and cities in Stephenson County have the highest regulated facility density?

Within Stephenson County, the highest concentrations of EPA-tracked facilities are located in ZIP 61032 (Freeport, 264 sites), ZIP 61048 (Lena, 49 sites), ZIP 61062 (Pearl City, 19 sites), spanning municipal corridors including Freeport (265 sites), Lena (50 sites), Pearl City (19 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Stephenson County?

Across Stephenson County, 135 facilities (34.8% 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 Stephenson County, IL?

Geologic indoor air screening places Stephenson 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 Stephenson County, IL?

Federal records track 61 Safe Drinking Water (SDWIS) facilities, 98 Clean Water Act NPDES permits, and 28 impaired water dischargers in Stephenson County, alongside 5 historical FEMA federal disaster declarations (5 flood/storm events).

Does Stephenson County, IL have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Stephenson 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.

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