Calhoun County, Iowa — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Calhoun County, Iowa, public U.S. EPA records track 118 regulated facilities (#53 of 117 in Iowa), including 6 (5.1%) High-Risk sites and $3,500 in federal penalties. Countywide due diligence also covers 16 Safe Drinking Water (SDWIS) facilities, 15 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Calhoun 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📊 Calhoun County, IA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Municipalities in Calhoun County
Top EPA Regulated Facilities in Calhoun 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 • LYTTON, IA (ZIP 50561 Sector) | HIGH (64/100) | Significant Violation (5 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • ROCKWELL CITY, IA (ZIP 50579 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • FARNHAMVILLE, IA (ZIP 50538 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • MANSON, IA (ZIP 50563 Sector) | HIGH (64/100) | Significant Violation (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • RINARD, IA (ZIP 50538 Sector) | MODERATE (42/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MANSON, IA (ZIP 50563 Sector) | MODERATE (38/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • LAKE CITY, IA (ZIP 51449 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • ROCKWELL CITY, IA (ZIP 50579 Sector) | MODERATE (33/100) | Violation Identified (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| PROLIANT INC - LYTTON FREE PREVIEW (LOW RISK) | HIGHWAY 20 & MAIN, LYTTON, IA 50561 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| DOBSON PIPE ORGAN BUILDERS LTD FREE PREVIEW (LOW RISK) | 200 N ILLINOIS ST, LAKE CITY, IA 51449 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| NEW COOPERATIVE INC. - KNIERIM-NH3 FREE PREVIEW (LOW RISK) | 101 MAIN ST, KNIERIM, IA 50552 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| AIR ELECTRIC MACHINE CO INC FREE PREVIEW (LOW RISK) | 100 MAIN ST, LOHRVILLE, IA 51453 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Calhoun County, Iowa Environmental Due Diligence
How many EPA-regulated environmental sites are in Calhoun County, Iowa?
Public U.S. EPA records track 118 regulated facilities in Calhoun County, Iowa (ranking #53 of 117 jurisdictions in IA). Of those, 6 (5.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 11 (9.3%) have active non-compliance quarters.
Which ZIP codes and cities in Calhoun County have the highest regulated facility density?
Within Calhoun County, the highest concentrations of EPA-tracked facilities are located in ZIP 50579 (Rockwell City, 31 sites), ZIP 60526 (Calhan, 24 sites), ZIP 51449 (Lake City, 24 sites), spanning municipal corridors including Rockwell City (30 sites), Lake City (25 sites), Manson (18 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Calhoun County?
Across Calhoun County, 49 facilities (41.5% 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 Calhoun County, IA?
Geologic indoor air screening places Calhoun 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 Calhoun County, IA?
Federal records track 16 Safe Drinking Water (SDWIS) facilities, 15 Clean Water Act NPDES permits, and 0 impaired water dischargers in Calhoun County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).
Does Calhoun County, IA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Calhoun County indicates a HIGH 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.