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 35 regulated facilities (#43 of 109 in South Dakota), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 9 Safe Drinking Water (SDWIS) facilities, 26 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 |
|---|---|---|---|---|
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | MODERATE (30/100) | Violation Identified (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • , SD (ZIP Sector) | MODERATE (28/100) | Resolved / Historical Non-Compliance (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| AVANTARA CLARK FREE PREVIEW (LOW RISK) | 201 NW 8TH AVE, CLARK, SD 57225 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| RAYMOND TBS FREE PREVIEW (LOW RISK) | 122 414TH AVENUE, RAYMOND, SD 57258 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| WILLOW LAKE TBS FREE PREVIEW (LOW RISK) | 19704 GRANT STREET, WILLOW LAKE, SD 57278 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| KELO RADIO TOWER - SD04 GARDEN CITY FREE PREVIEW (LOW RISK) | 43130 167TH STREET, GARDEN CITY, SD 57236 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • RAYMOND, SD (ZIP 57258 Sector) | LOW (16/100) | 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 (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | LOW (15/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • CLARK, SD (ZIP 57225 Sector) | LOW (15/100) | 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, South Dakota?
Public U.S. EPA records track 35 regulated facilities in Clark County, South Dakota (ranking #43 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 1 (2.9%) have active non-compliance quarters.
Which ZIP codes and cities in Clark County have the highest regulated facility density?
Within Clark County, the highest concentrations of EPA-tracked facilities are located in ZIP 57225 (Clark, 19 sites), ZIP 57258 (Raymond, 7 sites), ZIP 57236 (Garden City, 4 sites), spanning municipal corridors including Clark (19 sites), Garden City (4 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Clark County?
Across Clark County, 11 facilities (31.4% 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, SD?
Geologic indoor air screening places Clark 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, SD?
Federal records track 9 Safe Drinking Water (SDWIS) facilities, 26 Clean Water Act NPDES permits, and 2 impaired water dischargers in Clark 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.