Pennington County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Pennington County, SD?
In Pennington County, South Dakota, public U.S. EPA records track 273 regulated facilities (#4 of 109 in South Dakota), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 4 Safe Drinking Water (SDWIS) facilities, 231 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Pennington 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📊 Pennington County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Pennington County
ZIP Codes in Pennington County
Top EPA Regulated Facilities in Pennington 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 • WALL, SD (ZIP 57790 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57701 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • BOX ELDER, SD (ZIP 57719 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57703 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 2296 SAINT PATRICK STREET RECONSTRUCTION FREE PREVIEW (LOW RISK) | SAINT PATRICK STREET (FROM W BOULEVARD TO MT RUSHM, RAPID CITY, SD 57701 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| DIAMOND SPUR EVENT CENTER FREE PREVIEW (LOW RISK) | US 385 & MILL IRON DRIVE, HILL CITY, SD 57745 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| PRAIRIE BERRY RV CAMPGROUND FREE PREVIEW (LOW RISK) | 23845 HWY 385, HILL CITY, SD 57745 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| MURPHY RANCH FREE PREVIEW (LOW RISK) | S OF SPRINGFIELD RD & REMINGTON RD, RAPID CITY, SD 57703 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57701 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57703 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • ROCHFORD, SD (ZIP 57745 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57701 Sector) | LOW (17/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Pennington County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Pennington County County, South Dakota?
Public U.S. EPA records track 273 regulated facilities in Pennington County County, South Dakota (ranking #4 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 Pennington County County have the highest regulated facility density?
Within Pennington County County, the highest concentrations of EPA-tracked facilities are located in ZIP 57702 (Rapid City, 197 sites), ZIP 57709 (Rapid City, 62 sites), ZIP 57751 (Keystone, 23 sites), spanning municipal corridors including Rapid City (702 sites), Keystone (22 sites), Johnson Siding (2 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Pennington County County?
Across Pennington 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 Pennington County County, SD?
Geologic indoor air screening places Pennington 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 Pennington County County, SD?
Federal records track 4 Safe Drinking Water (SDWIS) facilities, 231 Clean Water Act NPDES permits, and 16 impaired water dischargers in Pennington County County, alongside 3 historical FEMA federal disaster declarations (0 flood/storm events).
Does Pennington County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Pennington 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.