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Decatur County, Iowa — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Decatur County, IA?

In Decatur County, Iowa, public U.S. EPA records track 69 regulated facilities (#87 of 117 in Iowa), including 2 (2.9%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 5 Safe Drinking Water (SDWIS) facilities, 20 Clean Water NPDES permits, 7 FEMA Federal Disaster Declarations (6 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#87/117)
69
High-Risk (2.9% vs 1.6% State)
2
Active Violators (7.2%)
5
Drinking & Clean Water
25
Federal Penalties
$0

Decatur County, IA 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
7 County FEMA Declarations (6 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: Moderate
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
5 SDWIS Systems • 20 NPDES Permits
🔒 1 Impaired Water (303d) & 9 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

📊 Decatur County, IA 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 32 (46.4%)
Clean Water (NPDES) & Drinking Water (SDWIS) 25 (36.2%)
Active EPA Non-Compliance Dockets 5 (7.2%)
High-Risk Enforcement Facilities 2 (2.9%)
2. FEMA NRI & USGS Hazard Index (1–10) Very Low (23.6/100)
🌊 Flood Exposure 1/10 • Very Low Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 3/10 • Low Hazard
🌪️ Severe Wind / Storm 3/10 • Low Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Decatur County High-Risk % 2.9%
Iowa (IA) Statewide Avg 1.6%
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 Decatur County, IA

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 • LAMONI, IA (ZIP 50140 Sector) HIGH (64/100) Significant Violation (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • GRAND RIVER, IA (ZIP 50108 Sector) HIGH (64/100) Significant Violation (6 qtrs NC) 🔒 6 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • DAVIS CITY, IA (ZIP 50065 Sector) MODERATE (35/100) Violation Identified (8 qtrs NC) 🔒 8 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • LEON, IA (ZIP 50144 Sector) MODERATE (34/100) Violation Identified (6 qtrs NC) 🔒 6 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • DECATUR, IA (ZIP 50067 Sector) MODERATE (30/100) Violation Identified (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • VAN WERT, IA (ZIP 50262 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (3 qtrs NC) 🔒 3 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • LAMONI, IA (ZIP 50140 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • WELDON, IA (ZIP 50264 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (5 qtrs NC) 🔒 5 Qtrs Non-Compliance • Unlock →
FARMERS COOP FREE PREVIEW (LOW RISK) 4TH AND LINDEN STREET, LAMONI, IA 50140 LOW (19/100) No Violation Identified (0 qtrs NC) $0
BROWER CONSTRUCTION COMPANY PLANT 5 FREE PREVIEW (LOW RISK) DECATUR CNTY E 1/2 S 1/4, DECATUR, IA 50067 LOW (17/100) No Violation Identified (0 qtrs NC) $0
AT&T - MICROWAVE TOWER SITE - FORMER SITE OF FREE PREVIEW (LOW RISK) 32094 175TH ST, LEON, IA 50144 LOW (17/100) No Violation Identified (0 qtrs NC) $0
BRUNERS COUNTRY SHOP-FORMER SITE OF FREE PREVIEW (LOW RISK) 2 MI E OF DECATUR, .6 MI N ON, LEON, IA 50144 LOW (17/100) No Violation Identified (0 qtrs NC) $0
🔒 + 57 Additional Regulated & Enforcement Records in Decatur County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Decatur County, Iowa Environmental Due Diligence

How many EPA-regulated environmental sites are in Decatur County, Iowa?

Public U.S. EPA records track 69 regulated facilities in Decatur County, Iowa (ranking #87 of 117 jurisdictions in IA). Of those, 2 (2.9%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 5 (7.2%) have active non-compliance quarters.

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

Within Decatur County, the highest concentrations of EPA-tracked facilities are located in ZIP 50144 (Leon, 23 sites), ZIP 50140 (Lamoni, 21 sites), ZIP 50108 (Grand River, 8 sites), spanning municipal corridors including Leon (22 sites), Lamoni (20 sites), Grand River (8 sites).

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

Across Decatur County, 32 facilities (46.4% 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 Decatur County, IA?

Geologic indoor air screening places Decatur 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 Decatur County, IA?

Federal records track 5 Safe Drinking Water (SDWIS) facilities, 20 Clean Water Act NPDES permits, and 1 impaired water dischargers in Decatur County, alongside 7 historical FEMA federal disaster declarations (6 flood/storm events).

Does Decatur County, IA have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Decatur County indicates a HIGH shrink-swell risk signal and steel pipe corrosivity rated Moderate. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.

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