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

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

In Dekalb County, Illinois, public U.S. EPA records track 234 regulated facilities (#62 of 193 in Illinois), including 6 (2.6%) High-Risk sites and $164,928 in federal penalties. Countywide due diligence also covers 50 Safe Drinking Water (SDWIS) facilities, 88 Clean Water NPDES permits, 5 FEMA Federal Disaster Declarations (5 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#62/193)
234
High-Risk (2.6% vs 1.3% State)
6
Active Violators (4.7%)
11
Drinking & Clean Water
138
Federal Penalties
$164,928

Dekalb 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: HIGH • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
50 SDWIS Systems • 88 NPDES Permits
🔒 16 Impaired Water (303d) & 24 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ 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

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

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 46 (19.7%)
Clean Water (NPDES) & Drinking Water (SDWIS) 138 (59.0%)
Active EPA Non-Compliance Dockets 11 (4.7%)
High-Risk Enforcement Facilities 6 (2.6%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (80.8/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 3/10 • Low Hazard
🌪️ Severe Wind / Storm 5/10 • Moderate Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Dekalb County High-Risk % 2.6%
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 Dekalb 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 • SYCAMORE, IL (ZIP 60178 Sector) HIGH (67/100) Violation (4 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • AURORA, IL (ZIP 60506 Sector) HIGH (65/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • NEAR IRENE, IL (ZIP 00000 Sector) HIGH (64/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • SANDWICH, IL (ZIP 60548 Sector) HIGH (64/100) Significant Violation (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • GENOA, IL (ZIP 60135 Sector) HIGH (64/100) Significant Violation (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • SYCAMORE, IL (ZIP 60178 Sector) MODERATE (46/100) No Violation Identified (0 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • DEKALB, IL (ZIP 60115 Sector) MODERATE (40/100) No Violation Identified (0 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • WATERMAN, IL (ZIP 60556 Sector) MODERATE (34/100) Violation Identified (7 qtrs NC) 🔒 7 Qtrs Non-Compliance • Unlock →
VULCAN CONSTRUCTION MATERIALS LP FREE PREVIEW (LOW RISK) 12502 LOYD RD, SYCAMORE, IL 60178 LOW (25/100) No Violation Identified (0 qtrs NC) $0
ANDERSON AUTO BODY FREE PREVIEW (LOW RISK) 707 PEARSON DR, GENOA, IL 60135 LOW (19/100) No Violation Identified (0 qtrs NC) $0
TATE AND LYLE CUSTOM INGREDIENTS INC FREE PREVIEW (LOW RISK) 1631 S PRAIRIE DR, SYCAMORE, IL 60178 LOW (18/100) No Violation Identified (0 qtrs NC) $0
DEKALB, CITY OF FREE PREVIEW (LOW RISK) 223 S 4TH ST STE B, DEKALB, IL 60115 LOW (17/100) Unknown (0 qtrs NC) $0
🔒 + 222 Additional Regulated & Enforcement Records in Dekalb County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Dekalb County, Illinois Environmental Due Diligence

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

Public U.S. EPA records track 234 regulated facilities in Dekalb County, Illinois (ranking #62 of 193 jurisdictions in IL). Of those, 6 (2.6%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 11 (4.7%) have active non-compliance quarters.

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

Within Dekalb County, the highest concentrations of EPA-tracked facilities are located in ZIP 60178 (Sycamore, 150 sites), ZIP 60556 (Waterman, 31 sites), ZIP 60520 (Hinckley, 22 sites), spanning municipal corridors including Dekalb (234 sites), Sycamore (154 sites), Waterman (31 sites).

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

Across Dekalb County, 46 facilities (19.7% 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 Dekalb County, IL?

Geologic indoor air screening places Dekalb 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 Dekalb County, IL?

Federal records track 50 Safe Drinking Water (SDWIS) facilities, 88 Clean Water Act NPDES permits, and 16 impaired water dischargers in Dekalb County, alongside 5 historical FEMA federal disaster declarations (5 flood/storm events).

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

USDA regional soil engineering screening for Dekalb 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.

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