Yankton County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Yankton County, SD?
In Yankton County, South Dakota, public U.S. EPA records track 49 regulated facilities (#27 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, 49 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Yankton 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📊 Yankton County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Yankton County
ZIP Codes in Yankton County
Top EPA Regulated Facilities in Yankton 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 • YANKTON, SD (ZIP 57078 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| SD WATER PURIFICATION FACILITY EXPANSION FREE PREVIEW (LOW RISK) | 715 E 4TH ST, YANKTON, SD 57078 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| RIGHT BANK SEWAGE LAGOON FREE PREVIEW (LOW RISK) | LEFT OFF NE HWY 121 ADJACENT, YANKTON, SD 57078 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| TODD COUNTY; PROJECT NH 0018(208)175, PCN 05TM FREE PREVIEW (LOW RISK) | SD HIGHWAY 18, MISSION, SD 57555 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| PIERSON RANCH TRAIL FREE PREVIEW (LOW RISK) | PIERSON RANCH RECREATION AREA, YANKTON, SD 57078 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • JAMESVILLE, SD (ZIP 57045 Sector) | LOW (16/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • YANKTON, SD (ZIP 57078 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • YANKTON, SD (ZIP 57078 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • YANKTON, SD (ZIP 57078 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • YANKTON, SD (ZIP 57078 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • YANKTON, SD (ZIP 57078 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • YANKTON, SD (ZIP 57078 Sector) | LOW (13/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Yankton County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Yankton County County, South Dakota?
Public U.S. EPA records track 49 regulated facilities in Yankton County County, South Dakota (ranking #27 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 Yankton County County have the highest regulated facility density?
Within Yankton County County, the highest concentrations of EPA-tracked facilities are located in ZIP 57078 (Yankton, 160 sites), ZIP 57045 (Jamesville, 8 sites), ZIP 57040 (Lesterville, 7 sites), spanning municipal corridors including Yankton (157 sites), Mission Hill (5 sites), Utica (4 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yankton County County?
Across Yankton 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 Yankton County County, SD?
Geologic indoor air screening places Yankton 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 Yankton County County, SD?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 49 Clean Water Act NPDES permits, and 5 impaired water dischargers in Yankton County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Yankton County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Yankton County indicates a LOW 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.