Day County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Day County, SD?
In Day County, South Dakota, public U.S. EPA records track 8 regulated facilities (#111 of 111 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, 8 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Day 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📊 Day County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Day County
ZIP Codes in Day County
Top EPA Regulated Facilities in Day 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 |
|---|---|---|---|---|
| ZIMMERMAN LIVESTOCK LLC FREE PREVIEW (LOW RISK) | E OF 14648 423RD AVE, BRISTOL, SD 57219 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| TRANSITION CALF BARN & SOLID WASTE STORAGE BUILDIN FREE PREVIEW (LOW RISK) | 507 SOUTH 2ND STREET, ANDOVER, SD 57422 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| WATER & WASTEWATER SYSTEM IMPROVEMENTS FREE PREVIEW (LOW RISK) | THROUGHUT THE CITY, WEBSTER, SD 57274 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| WASTEWATER SYSTEM IMPROVEMENTS FREE PREVIEW (LOW RISK) | THROUGHOUT TOWN & LAGOON W OF TOWN, PIERPONT, SD 57468 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • WEBSTER, SD (ZIP 57274 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WEBSTER, SD (ZIP 57274 Sector) | LOW (12/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WAUBAY, SD (ZIP 57273 Sector) | LOW (11/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • WAUBAY, SD (ZIP 57273 Sector) | LOW (11/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Day County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Day County County, South Dakota?
Public U.S. EPA records track 8 regulated facilities in Day County County, South Dakota (ranking #111 of 111 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 Day County County have the highest regulated facility density?
Within Day County County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Day County.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Day County County?
Across Day 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 Day County County, SD?
Geologic indoor air screening places Day 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 Day County County, SD?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 8 Clean Water Act NPDES permits, and 0 impaired water dischargers in Day County County, alongside 4 historical FEMA federal disaster declarations (3 flood/storm events).
Does Day County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Day 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.