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 583 regulated facilities (#2 of 109 in South Dakota), including 2 (0.3%) High-Risk sites and $5,306,794 in federal penalties. Countywide due diligence also covers 154 Safe Drinking Water (SDWIS) facilities, 288 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 03, 2026)Municipalities 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 • RAPID CITY, SD (ZIP 57702 Sector) | MODERATE (56/100) | Violation Identified (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57701 Sector) | MODERATE (48/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57702 Sector) | MODERATE (48/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • BLACK HAWK, SD (ZIP 57718 Sector) | MODERATE (36/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57703 Sector) | MODERATE (35/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • RAPID CITY, SD (ZIP 57701 Sector) | MODERATE (35/100) | Resolved / Historical Non-Compliance (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • ELLSWORTH AFB, SD (ZIP 57706 Sector) | MODERATE (35/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • BOX ELDER, SD (ZIP 57719 Sector) | MODERATE (33/100) | Violation Identified (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| CONO-MART #3 FREE PREVIEW (LOW RISK) | 117 NORTH ELLSWORTH RD, BOX ELDER, SD 57719 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| MERTENS DENTAL LABORATORY FREE PREVIEW (LOW RISK) | 1901 WEST MAIN, RAPID CITY, SD 57701 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| HOUSE OF PLASTICS SO DAK DIV FREE PREVIEW (LOW RISK) | 2418 CANYON LAKE DRIVE, RAPID CITY, SD 57701 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| WALMART SUPERCENTER #1604 FREE PREVIEW (LOW RISK) | 1200 LACROSSE STREET, RAPID CITY, SD 57701 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Pennington County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Pennington County, South Dakota?
Public U.S. EPA records track 583 regulated facilities in Pennington County, South Dakota (ranking #2 of 109 jurisdictions in SD). Of those, 2 (0.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 13 (2.2%) have active non-compliance quarters.
Which ZIP codes and cities in Pennington County have the highest regulated facility density?
Within Pennington County, the highest concentrations of EPA-tracked facilities are located in ZIP 57701 (Rapid City, 374 sites), ZIP 57703 (Rapid City, 98 sites), ZIP 57719 (Box Elder, 74 sites), spanning municipal corridors including Box Elder (81 sites), Hill City (38 sites), Wall (12 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Pennington County?
Across Pennington County, 309 facilities (53.0% 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, SD?
Geologic indoor air screening places Pennington 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, SD?
Federal records track 154 Safe Drinking Water (SDWIS) facilities, 288 Clean Water Act NPDES permits, and 28 impaired water dischargers in Pennington 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.