Unknown, South Dakota — Flood Zone, Tap Water Quality, Soil Foundation, Radon & EPA Hazards
Public U.S. EPA records track 26 regulated facilities in Unknown, South Dakota ( County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Unknown properties are screened for Tap Water & Watershed Permits (26 systems), USDA Soil Foundation Shrink-Swell (HIGH signal), 15 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Unknown, SD 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Unknown, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP Codes in Unknown, SD
Highest-Scored EPA Regulated Facilities in Unknown, 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 |
|---|---|---|---|---|
| HANSON COUNTY PROJECT P 0042(58) FREE PREVIEW (LOW RISK) | HWY 42 (W OF 419TH AVE TO W OF 420TH AVE, UNKNOWN, SD 99999 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| WILLOW CREEK BANK STABILIZATION FREE PREVIEW (LOW RISK) | RURAL LOCATIONS, UNKNOWN, SD 99999 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| LOCKHORST SWINE FREE PREVIEW (LOW RISK) | TBD, UNKNOWN, SD 99999 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| PUMP STATION 18 HAAKON FREE PREVIEW (LOW RISK) | ROYER ROAD/WEST FORK ROAD 1.5 MILES S OF SD HWY 34, UNKNOWN, SD 99999 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, SD (ZIP 99999 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Unknown, South Dakota Environmental Risk & Radon
How many EPA-regulated facilities are in Unknown, SD?
U.S. EPA records track 26 regulated facilities in Unknown, South Dakota, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 0 RCRA hazardous waste handlers (0.0%).
Which ZIP codes in Unknown, SD have the most EPA-tracked sites?
Within Unknown, regulated facilities are primarily concentrated across local postal codes.
How can I check a specific house or commercial property in Unknown, SD?
Enter the exact street address in Unknown into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.
Is tap water safe in Unknown, SD and how many EPA water permits exist?
In Unknown, SD, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 26 Clean Water Act NPDES permits, and 2 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Unknown, SD?
USDA regional soil screening for Unknown indicates a HIGH shrink-swell foundation signal, and County has recorded 15 federal FEMA disaster declarations (8 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.