Shannon County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Shannon County, SD?
In Shannon 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 14 Safe Drinking Water (SDWIS) facilities, 35 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).
Shannon 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📊 Shannon County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Shannon County
ZIP Codes in Shannon County
Top EPA Regulated Facilities in Shannon 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 • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (28/100) | Resolved / Historical Non-Compliance (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (27/100) | Resolved / Historical Non-Compliance (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (27/100) | Resolved / Historical Non-Compliance (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (26/100) | Resolved / Historical Non-Compliance (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (26/100) | Resolved / Historical Non-Compliance (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • PINE RIDGE, SD (ZIP 57770 Sector) | MODERATE (26/100) | Resolved / Historical Non-Compliance (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| MANDERSON PATHWAY FREE PREVIEW (LOW RISK) | BIA 33 AND BIA 28, MANDERSON, SD 57756 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| OGLALA HOUSING STREET IMPROVEMENTS - BIA ROUTE 50 FREE PREVIEW (LOW RISK) | BIA 115/50, OGLALA, SD 57764 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| KYLE PATHWAY FREE PREVIEW (LOW RISK) | BIA 2, KYLE, SD 57752 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| BIA 115/50 FREE PREVIEW (LOW RISK) | BIA 115/BIA 50, OGLALA, SD 57764 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Shannon County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Shannon County County, South Dakota?
Public U.S. EPA records track 49 regulated facilities in Shannon 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 Shannon County County have the highest regulated facility density?
Within Shannon County County, the highest concentrations of EPA-tracked facilities are located in ZIP 57770 (Pine Ridge, 54 sites), ZIP 57764 (Oglala, 20 sites), ZIP 57756 (Manderson, 10 sites), spanning municipal corridors including Pine Ridge (53 sites), Oglala (14 sites), Manderson (10 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Shannon County County?
Across Shannon 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 Shannon County County, SD?
Geologic indoor air screening places Shannon 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 Shannon County County, SD?
Federal records track 14 Safe Drinking Water (SDWIS) facilities, 35 Clean Water Act NPDES permits, and 0 impaired water dischargers in Shannon County County, alongside 15 historical FEMA federal disaster declarations (8 flood/storm events).
Does Shannon County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Shannon 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.