Johnson County, Iowa — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Johnson County, IA?
In Johnson County, Iowa, public U.S. EPA records track 499 regulated facilities (#6 of 117 in Iowa), including 10 (2.0%) High-Risk sites and $5,681,500 in federal penalties. Countywide due diligence also covers 151 Safe Drinking Water (SDWIS) facilities, 62 Clean Water NPDES permits, 7 FEMA Federal Disaster Declarations (6 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Johnson 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📊 Johnson County, IA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Johnson County
ZIP Codes in Johnson County
Top EPA Regulated Facilities in Johnson 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).
| 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 • IOWA CITY, IA (ZIP 52240 Sector) | HIGH (80/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • IOWA CITY, IA (ZIP 52240 Sector) | HIGH (69/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SOLON, IA (ZIP 52333 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • OXFORD, IA (ZIP 52322 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • IOWA CITY, IA (ZIP 52246 Sector) | HIGH (64/100) | Significant Violation (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • NORTH LIBERTY, IA (ZIP 52317 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CORALVILLE, IA (ZIP 52240 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • SWISHER, IA (ZIP 52338 Sector) | HIGH (64/100) | Significant Violation (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| UI HEALTH CARE - NORTH IOWA CITY FREE PREVIEW (LOW RISK) | 1360 N DODGE ST, IOWA CITY, IA 52242 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| FAIRVIEW GOLF COURSE FREE PREVIEW (LOW RISK) | 4670 AMERICAN LEGION RD, IOWA CITY, IA 52240 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| VICS AUTO BODY REPAIR INC FREE PREVIEW (LOW RISK) | 1514 WILLOW CREEK DR, IOWA CITY, IA 52246 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| TRUCK SHOP FREE PREVIEW (LOW RISK) | 120 E 9TH ST, CORALVILLE, IA 52241 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Johnson County, Iowa Environmental Due Diligence
How many EPA-regulated environmental sites are in Johnson County, Iowa?
Public U.S. EPA records track 499 regulated facilities in Johnson County, Iowa (ranking #6 of 117 jurisdictions in IA). Of those, 10 (2.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 41 (8.2%) have active non-compliance quarters.
Which ZIP codes and cities in Johnson County have the highest regulated facility density?
Within Johnson County, the highest concentrations of EPA-tracked facilities are located in ZIP 52240 (Iowa City, 151 sites), ZIP 52241 (Coralville, 100 sites), ZIP 52246 (Iowa City, 35 sites), spanning municipal corridors including Iowa City (220 sites), Coralville (103 sites), North Liberty (28 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Johnson County?
Across Johnson County, 240 facilities (48.1% 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 Johnson County, IA?
Geologic indoor air screening places Johnson 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 Johnson County, IA?
Federal records track 151 Safe Drinking Water (SDWIS) facilities, 62 Clean Water Act NPDES permits, and 27 impaired water dischargers in Johnson County, alongside 7 historical FEMA federal disaster declarations (6 flood/storm events).
Does Johnson County, IA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Johnson County indicates a MODERATE 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.