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

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

In Polk County, Iowa, public U.S. EPA records track 2,721 regulated facilities (#1 of 117 in Iowa), including 19 (0.7%) High-Risk sites and $6,640,858 in federal penalties. Countywide due diligence also covers 37 Safe Drinking Water (SDWIS) facilities, 82 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#1/117)
2,721
High-Risk (0.7% vs 1.6% State)
19
Active Violators (1.0%)
26
Drinking & Clean Water
119
Federal Penalties
$6,640,858

Polk 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
3 County FEMA Declarations (3 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: Moderate
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
37 SDWIS Systems • 82 NPDES Permits
🔒 21 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

📊 Polk 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 1,468 (54.0%)
Clean Water (NPDES) & Drinking Water (SDWIS) 119 (4.4%)
Active EPA Non-Compliance Dockets 26 (1.0%)
High-Risk Enforcement Facilities 19 (0.7%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Moderate (92.0/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 7/10 • High Hazard
🌪️ Severe Wind / Storm 9/10 • Very High Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Polk County High-Risk % 0.7%
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 Polk 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 • DES MOINES, IA (ZIP 50313 Sector) HIGH (84/100) Significant Violation (6 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • DES MOINES, IA (ZIP 50313 Sector) HIGH (76/100) Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • JOHNSTON, IA (ZIP 50131 Sector) HIGH (74/100) Violation Identified (9 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • ALTOONA, IA (ZIP 50009 Sector) HIGH (74/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • DES MOINES, IA (ZIP 50313 Sector) HIGH (66/100) Violation Identified (1 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • MITCHELLVILLE, IA (ZIP 50169 Sector) HIGH (64/100) Significant Violation (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • DES MOINES, IA (ZIP 50314 Sector) HIGH (64/100) Significant Violation (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • WEST DES MOINES, IA (ZIP 50265 Sector) HIGH (64/100) Significant Violation (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
DENNIS PARKING LOT MAINTENANCE INC FREE PREVIEW (LOW RISK) 6450 NE 14TH ST, DES MOINES, IA 50313 LOW (18/100) No Violation Identified (0 qtrs NC) $0
WALGREENS #4973 FREE PREVIEW (LOW RISK) 7000 DOUGLAS AVE, URBANDALE, IA 50322 LOW (17/100) No Violation Identified (0 qtrs NC) $0
DASO ELECTROSTATIC REFINISHING FREE PREVIEW (LOW RISK) 295 ADVENTURELAND DR E, ALTOONA, IA 50009 LOW (17/100) No Violation Identified (0 qtrs NC) $0
DES MOINES, CITY OF-AVIATION GARAGE FREE PREVIEW (LOW RISK) 2600 SW MCKINLEY, DES MOINES, IA 50321 LOW (17/100) No Violation Identified (0 qtrs NC) $0
🔒 + 2,709 Additional Regulated & Enforcement Records in Polk County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Polk County, Iowa Environmental Due Diligence

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

Public U.S. EPA records track 2,721 regulated facilities in Polk County, Iowa (ranking #1 of 117 jurisdictions in IA). Of those, 19 (0.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 26 (1.0%) have active non-compliance quarters.

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

Within Polk County, the highest concentrations of EPA-tracked facilities are located in ZIP 50313 (Des Moines, 437 sites), ZIP 50309 (Des Moines, 306 sites), ZIP 50322 (Urbandale, 202 sites), spanning municipal corridors including Des Moines (1,851 sites), Ankeny (249 sites), Urbandale (165 sites).

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

Across Polk County, 1,468 facilities (54.0% 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 Polk County, IA?

Geologic indoor air screening places Polk 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 Polk County, IA?

Federal records track 37 Safe Drinking Water (SDWIS) facilities, 82 Clean Water Act NPDES permits, and 21 impaired water dischargers in Polk County, alongside 3 historical FEMA federal disaster declarations (3 flood/storm events).

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

USDA regional soil engineering screening for Polk County indicates a MODERATE 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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