Clark County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Clark County, SD?
In Clark County, South Dakota, public U.S. EPA records track 17 regulated facilities (#87 of 109 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, 17 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Clark 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📊 Clark County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Clark County
ZIP Codes in Clark County
Top EPA Regulated Facilities in Clark 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 |
|---|---|---|---|---|
| REDSTONE FARMS RE LLC FREE PREVIEW (LOW RISK) | 42475 189TH STREET, WILLOW LAKE, SD 57278 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| FARROWING EXPANSION FREE PREVIEW (LOW RISK) | 41960 185TH ST, WILLOW LAKE, SD 57278 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| TRI-R LLC FREE PREVIEW (LOW RISK) | SW OF SD HWY 25 & SD HWY 20 (1 MILE W & 1.25 MILES, BRADLEY, SD 57217 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| RUNWAY 13/31 RECONSTRUCTION FREE PREVIEW (LOW RISK) | HWY 63 NW OF CLARK, CLARK, SD 57225 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • WILLOW LAKE, SD (ZIP 57278 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • IROQUOIS, SD (ZIP 57353 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • RAYMOND, SD (ZIP 57258 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • BRADLEY, SD (ZIP 57217 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • GARDEN CITY, SD (ZIP 57236 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WILLOW LAKE, SD (ZIP 57278 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Clark County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Clark County County, South Dakota?
Public U.S. EPA records track 17 regulated facilities in Clark County County, South Dakota (ranking #87 of 109 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 Clark County County have the highest regulated facility density?
Within Clark County County, the highest concentrations of EPA-tracked facilities are located in ZIP 57278 (Willow Lake, 10 sites), ZIP 57322 (Carpenter, 8 sites), ZIP 57217 (Bradley, 5 sites), spanning municipal corridors including Willow Lake (10 sites), Carpenter (7 sites), Bradley (5 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Clark County County?
Across Clark 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 Clark County County, SD?
Geologic indoor air screening places Clark 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 Clark County County, SD?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 17 Clean Water Act NPDES permits, and 0 impaired water dischargers in Clark County County, alongside 2 historical FEMA federal disaster declarations (1 flood/storm events).
Does Clark County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Clark 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.