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Marion County, Ohio — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Marion County, OH?

In Marion County, Ohio, public U.S. EPA records track 323 regulated facilities (#41 of 141 in Ohio), including 8 (2.5%) High-Risk sites and $5,300,000 in federal penalties. Countywide due diligence also covers 37 Safe Drinking Water (SDWIS) facilities, 43 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).

Total EPA Sites (#41/141)
323
High-Risk (2.5% vs 1.7% State)
8
Active Violators (6.8%)
22
Drinking & Clean Water
80
Federal Penalties
$5,300,000

Marion County, OH 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
2 County FEMA Declarations (2 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
37 SDWIS Systems • 43 NPDES Permits
🔒 43 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

📊 Marion County, OH 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 206 (63.8%)
Clean Water (NPDES) & Drinking Water (SDWIS) 80 (24.8%)
Active EPA Non-Compliance Dockets 22 (6.8%)
High-Risk Enforcement Facilities 8 (2.5%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (61.1/100)
🌊 Flood Exposure 3/10 • Low 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
Marion County High-Risk % 2.5%
Ohio (OH) Statewide Avg 1.7%
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 Marion County, OH

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 • MARION, OH (ZIP 43302 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 • LARUE, OH (ZIP 43332 Sector) HIGH (69/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • MARION, OH (ZIP 43302 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 • MARION, OH (ZIP 43302 Sector) HIGH (64/100) Significant Violation (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • MARION, OH (ZIP 43302 Sector) MODERATE (53/100) Violation (3 qtrs NC) 🔒 3 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • MARION, OH (ZIP 43302 Sector) MODERATE (52/100) Violation Identified (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • CALEDONIA, OH (ZIP 43314 Sector) MODERATE (52/100) Violation Identified (7 qtrs NC) 🔒 7 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • MARTEL, OH (ZIP 43335 Sector) MODERATE (45/100) Violation Identified (7 qtrs NC) 🔒 7 Qtrs Non-Compliance • Unlock →
ULTRACARE PRODUCTS INC FREE PREVIEW (LOW RISK) 333 JOSEPH ST, MARION, OH 43302 LOW (17/100) No Violation Identified (0 qtrs NC) $0
SIKA CORPORATION FREE PREVIEW (LOW RISK) 3007 HARDING WAY E, MARION, OH 43302 LOW (16/100) No Violation Identified (0 qtrs NC) $0
CARQUEST AUTO PARTS FREE PREVIEW (LOW RISK) 278 E CHURCH ST, MARION, OH 43302 LOW (16/100) No Violation Identified (0 qtrs NC) $0
NATIONAL CAN CO FREE PREVIEW (LOW RISK) 1240 WEST CENTER STREET, MARION, OH 43302 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 311 Additional Regulated & Enforcement Records in Marion County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Marion County, Ohio Environmental Due Diligence

How many EPA-regulated environmental sites are in Marion County, Ohio?

Public U.S. EPA records track 323 regulated facilities in Marion County, Ohio (ranking #41 of 141 jurisdictions in OH). Of those, 8 (2.5%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 22 (6.8%) have active non-compliance quarters.

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

Within Marion County, the highest concentrations of EPA-tracked facilities are located in ZIP 43302 (Marion, 249 sites), ZIP 43015 (Delaware, 186 sites), ZIP 43314 (Caledonia, 13 sites), spanning municipal corridors including Marion (256 sites), Delaware (188 sites), Caledonia (14 sites).

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

Across Marion County, 206 facilities (63.8% 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 Marion County, OH?

Geologic indoor air screening places Marion 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 Marion County, OH?

Federal records track 37 Safe Drinking Water (SDWIS) facilities, 43 Clean Water Act NPDES permits, and 43 impaired water dischargers in Marion County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).

Does Marion County, OH have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Marion 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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