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

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

In Woodbury County, Iowa, public U.S. EPA records track 16 regulated facilities (#110 of 117 in Iowa), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 6 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#110/117)
16
High-Risk (0.0% vs 1.6% State)
0
Active Violators (6.2%)
1
Drinking & Clean Water
7
Federal Penalties
$0

Woodbury 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
2 County FEMA Declarations (1 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: Low
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
1 SDWIS Systems • 6 NPDES Permits
🔒 3 Impaired Water (303d) & 3 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

📊 Woodbury County, IA 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 1 (6.2%)
Clean Water (NPDES) & Drinking Water (SDWIS) 7 (43.8%)
Active EPA Non-Compliance Dockets 1 (6.2%)
High-Risk Enforcement Facilities 0 (0.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Moderate (83.3/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 3/10 • Low Hazard
☀️ Extreme Heat 5/10 • Moderate Hazard
🌪️ Severe Wind / Storm 7/10 • High Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Woodbury County High-Risk % 0.0%
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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Municipalities in Woodbury County

ZIP Codes in Woodbury County

Top EPA Regulated Facilities in Woodbury 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 Regulated EPA Enforcement Record #1 🔒 Exact Street & Parcel Redacted • SIOUX CITY, IA (ZIP 51103 Sector) MODERATE (34/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • SERGEANT BLUFF, IA (ZIP 51054 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (6 qtrs NC) 🔒 6 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • CITY OF SIOUX CITY, IA (ZIP 51111 Sector) MODERATE (30/100) Violation Identified (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • SIOUX CITY, IA (ZIP 51111 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • SERGEANT BLUFF, IA (ZIP 51054 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • SIOUX CITY, IA (ZIP 51102 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
L.G. EVERIST, INC. TRACK 6 AGGREGATE DIVISION, SIOUX CITY DISTRIBUTION YARD FREE PREVIEW (LOW RISK) 124 STEUBEN STREET, SIOUX CITY, IA 51101 LOW (17/100) No Violation Identified (0 qtrs NC) $0
KENT NUTRITION GROUP INC-SIOUX CITY FREE PREVIEW (LOW RISK) 4001 S LEWIS BLVD, SIOUX CITY, IA 51106 LOW (13/100) No Violation Identified (0 qtrs NC) $0
STANDARD READY MIX-SIOUX CITY FREE PREVIEW (LOW RISK) 1210 STEUBEN STREET, SIOUX CITY, IA 51105 LOW (13/100) No Violation Identified (0 qtrs NC) $0
WINNEBAGO TRIBE OF NEBRASKA FREE PREVIEW (LOW RISK) 1500 330TH STREET, SLOAN, IA 51055 LOW (12/100) No Violation Identified (0 qtrs NC) $0
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • SIOUX CITY, IA (ZIP 51108 Sector) LOW (12/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • CITY OF SIOUX CITY, IA (ZIP 51106 Sector) LOW (12/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 + 4 Additional Regulated & Enforcement Records in Woodbury County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Woodbury County, Iowa Environmental Due Diligence

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

Public U.S. EPA records track 16 regulated facilities in Woodbury County County, Iowa (ranking #110 of 117 jurisdictions in IA). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 1 (6.2%) have active non-compliance quarters.

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

Within Woodbury County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Woodbury County.

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

Across Woodbury County County, 1 facilities (6.2% 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 Woodbury County County, IA?

Geologic indoor air screening places Woodbury County 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 Woodbury County County, IA?

Federal records track 1 Safe Drinking Water (SDWIS) facilities, 6 Clean Water Act NPDES permits, and 3 impaired water dischargers in Woodbury County County, alongside 2 historical FEMA federal disaster declarations (1 flood/storm events).

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

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

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