Sioux County, Iowa — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Sioux County, IA?
In Sioux County, Iowa, public U.S. EPA records track 19 regulated facilities (#107 of 117 in Iowa), including 1 (5.3%) High-Risk sites and $22,825 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 9 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).
Sioux 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📊 Sioux County, IA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Sioux County
ZIP Codes in Sioux County
Top EPA Regulated Facilities in Sioux 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 Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • ALTON, IA (ZIP 51003 Sector) | MODERATE (42/100) | Violation Identified (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • ROCK VALLEY, IA (ZIP 51247 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • ORANGE CITY, IA (ZIP 51041 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • ROCK VALLEY, IA (ZIP 51247 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HOSPERS, IA (ZIP 51238 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| BRIGHTMARK BLACK SIOL RNG, LLC FREE PREVIEW (LOW RISK) | 4626 490TH STREET, GRANVILLE, IA 51022 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| ORANGE STP FREE PREVIEW (LOW RISK) | PO BOX 406, ORANGE CITY, IA 51041 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| CENTER FRESH EGG FREE PREVIEW (LOW RISK) | 4135 GARFIELD AVE., SIOUX CENTER, IA 51250 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| CITY OF SHELDON IA WWTF FREE PREVIEW (LOW RISK) | 890 WESTERN AVENUE, SHELDON, IA 51201 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • SIOUX CENTER, IA (ZIP 51250 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HOSPERS, IA (ZIP 51238 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HOSPERS, IA (ZIP 51238 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Sioux County, Iowa Environmental Due Diligence
How many EPA-regulated environmental sites are in Sioux County County, Iowa?
Public U.S. EPA records track 19 regulated facilities in Sioux County County, Iowa (ranking #107 of 117 jurisdictions in IA). Of those, 1 (5.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 1 (5.3%) have active non-compliance quarters.
Which ZIP codes and cities in Sioux County County have the highest regulated facility density?
Within Sioux County County, the highest concentrations of EPA-tracked facilities are located in ZIP 51238 (Hospers, 19 sites), spanning municipal corridors including Hospers (19 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Sioux County County?
Across Sioux County County, 2 facilities (10.5% 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 Sioux County County, IA?
Geologic indoor air screening places Sioux 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 Sioux County County, IA?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 9 Clean Water Act NPDES permits, and 1 impaired water dischargers in Sioux County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Sioux County, IA have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Sioux 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.