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

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

In Poweshiek County, Iowa, public U.S. EPA records track 141 regulated facilities (#37 of 117 in Iowa), including 1 (0.7%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 9 Safe Drinking Water (SDWIS) facilities, 14 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#37/117)
141
High-Risk (0.7% vs 1.6% State)
1
Active Violators (5.0%)
7
Drinking & Clean Water
23
Federal Penalties
$0

Poweshiek 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
1 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: 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
9 SDWIS Systems • 14 NPDES Permits
🔒 2 Impaired Water (303d) & 13 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

📊 Poweshiek 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 90 (63.8%)
Clean Water (NPDES) & Drinking Water (SDWIS) 23 (16.3%)
Active EPA Non-Compliance Dockets 7 (5.0%)
High-Risk Enforcement Facilities 1 (0.7%)
2. FEMA NRI & USGS Hazard Index (1–10) Very Low (31.3/100)
🌊 Flood Exposure 1/10 • Very Low 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
Poweshiek 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 Poweshiek 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 • BROOKLYN, IA (ZIP 52211 Sector) HIGH (64/100) Significant Violation (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • GRINNELL, IA (ZIP 50112 Sector) MODERATE (41/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • DEEP RIVER, IA (ZIP 52222 Sector) MODERATE (38/100) Violation Identified (11 qtrs NC) 🔒 11 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • SEARSBORO, IA (ZIP 50242 Sector) MODERATE (35/100) Violation Identified (3 qtrs NC) 🔒 3 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • MALCOM, IA (ZIP 50157 Sector) MODERATE (33/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • BROOKLYN, IA (ZIP 52211 Sector) MODERATE (33/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • BROOKLYN, IA (ZIP 52211 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (7 qtrs NC) 🔒 7 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • MONTEZUMA, IA (ZIP 50171 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
H W BRAND LIVESTOCK EQUIPMENT FREE PREVIEW (LOW RISK) 1228 ZIMMERMAN DR, GRINNELL, IA 50112 LOW (20/100) No Violation Identified (0 qtrs NC) $0
GRINNELL REGIONAL MEDICAL CENTER FREE PREVIEW (LOW RISK) 210 4TH AVENUE, GRINNELL, IA 50112 LOW (20/100) No Violation Identified (0 qtrs NC) $0
SIG MFG CO INC FREE PREVIEW (LOW RISK) 401 SOUTH FRONT STREET, MONTEZUMA, IA 50171 LOW (20/100) No Violation Identified (0 qtrs NC) $0
HEARTLAND CO-OP MALCOM SOUTH NH3 FREE PREVIEW (LOW RISK) SOUTH RAILROAD STREET, MALCOM, IA 50157 LOW (19/100) No Violation Identified (0 qtrs NC) $0
🔒 + 129 Additional Regulated & Enforcement Records in Poweshiek County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Poweshiek County, Iowa Environmental Due Diligence

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

Public U.S. EPA records track 141 regulated facilities in Poweshiek County, Iowa (ranking #37 of 117 jurisdictions in IA). Of those, 1 (0.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 7 (5.0%) have active non-compliance quarters.

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

Within Poweshiek County, the highest concentrations of EPA-tracked facilities are located in ZIP 50112 (Grinnell, 78 sites), ZIP 50171 (Montezuma, 30 sites), ZIP 52211 (Brooklyn, 21 sites), spanning municipal corridors including Grinnell (78 sites), Montezuma (30 sites), Brooklyn (21 sites).

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

Across Poweshiek County, 90 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 Poweshiek County, IA?

Geologic indoor air screening places Poweshiek 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 Poweshiek County, IA?

Federal records track 9 Safe Drinking Water (SDWIS) facilities, 14 Clean Water Act NPDES permits, and 2 impaired water dischargers in Poweshiek County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).

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

USDA regional soil engineering screening for Poweshiek 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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