Gregory County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Gregory County, SD?
In Gregory County, South Dakota, public U.S. EPA records track 4 regulated facilities (#130 of 130 in South Dakota), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 4 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).
Gregory County, SD 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Gregory County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Gregory County
ZIP Codes in Gregory County
Top EPA Regulated Facilities in Gregory County, SD
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 |
|---|---|---|---|---|
| HANGAR TAXILANE EXPANSION FREE PREVIEW (LOW RISK) | 120 W 6TH ST, GREGORY, SD 57533 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| P 0044(201)276 FREE PREVIEW (LOW RISK) | TWO LOCATIONS ON SD HWY 44, BETWEEN WINNER, SD AND, GREGORY, SD 57533 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| NH 0018(214)286 FREE PREVIEW (LOW RISK) | US HWY 18 TO BONESTEEL, BURKE, SD 57523 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| AVERA GREGORY HOSPITAL & NURSING HOME FREE PREVIEW (LOW RISK) | 1ST STREET & LOGAN AVE, GREGORY, SD 57533 | LOW (11/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Gregory County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Gregory County County, South Dakota?
Public U.S. EPA records track 4 regulated facilities in Gregory County County, South Dakota (ranking #130 of 130 jurisdictions in SD). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Gregory County County have the highest regulated facility density?
Within Gregory County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Gregory County.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Gregory County County?
Across Gregory County County, 0 facilities (0.0% 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 Gregory County County, SD?
Geologic indoor air screening places Gregory 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 Gregory County County, SD?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 4 Clean Water Act NPDES permits, and 0 impaired water dischargers in Gregory County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Gregory County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Gregory 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.