Portable Source County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Portable Source County, SD?
In Portable Source County, South Dakota, public U.S. EPA records track 52 regulated facilities (#26 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, 1 Clean Water NPDES permits, 15 FEMA Federal Disaster Declarations (8 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Portable Source 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📊 Portable Source County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Portable Source County
ZIP Codes in Portable Source County
Top EPA Regulated Facilities in Portable Source 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 • MITCHELL, SD, SD (ZIP 57301 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • ABERDEEN, SD (ZIP 57401 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • BROOKINGS, SD (ZIP 57006 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • HURON, SD (ZIP 57350 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • SOUTH DAKOTA, SD (ZIP 68138 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • SIOUX FALLS, SD (ZIP 57103 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • SOUTH DAKOTA, SD (ZIP 58504 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • OLIVET, SD (ZIP 57052 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| HILLS MATERIALS COMPANY FREE PREVIEW (LOW RISK) | P.O. BOX 1392, RAPID CITY, SD 57701 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| CARLSON, JOHN A. INC. FREE PREVIEW (LOW RISK) | NO STREET ADDRESS, WINNER, SD 00000 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| J&J ASPHALT COMPANY FREE PREVIEW (LOW RISK) | PO BOX 7105, RAPID CITY, SD 57709 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| FISHER SAND & GRAVEL COMPANY FREE PREVIEW (LOW RISK) | PO BOX 1120, SPEARFISH, SD 57783 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Portable Source County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Portable Source County, South Dakota?
Public U.S. EPA records track 52 regulated facilities in Portable Source County, South Dakota (ranking #26 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 Portable Source County have the highest regulated facility density?
Within Portable Source County, the highest concentrations of EPA-tracked facilities are located in ZIP 58067 (Rutland, 3 sites), spanning municipal corridors including Whitewood (19 sites), Rutland (4 sites), Mitchell, Sd (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Portable Source County?
Across Portable Source County, 1 facilities (1.9% 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 Portable Source County, SD?
Geologic indoor air screening places Portable Source 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 Portable Source County, SD?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 1 Clean Water Act NPDES permits, and 0 impaired water dischargers in Portable Source County, alongside 15 historical FEMA federal disaster declarations (8 flood/storm events).
Does Portable Source County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Portable Source 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.