Mellette County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Mellette County, SD?
In Mellette County, South Dakota, public U.S. EPA records track 9 regulated facilities (#110 of 110 in South Dakota), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 2 Safe Drinking Water (SDWIS) facilities, 10 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (HIGH signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Mellette 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📊 Mellette County, SD Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Mellette County
ZIP Codes in Mellette County
Top EPA Regulated Facilities in Mellette 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 • WHITE RIVER, SD (ZIP 57579 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| WHITE RIVER - CITY OF FREE PREVIEW (LOW RISK) | PO BOX 102, WHITE RIVER, SD 57579 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| WR/LJ - MELLETTE EAST FREE PREVIEW (LOW RISK) | , , SD | LOW (12/100) | Inactive (0 qtrs NC) | $0 |
| BUTTE CREEK COMMUNITY WASTEWATER TREATMENT FACILITY FREE PREVIEW (LOW RISK) | NW1/4, SEC.36, T41N, R27W, WOOD, SD 57585 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| SWIFT BEAR COMMUNITY FREE PREVIEW (LOW RISK) | NE1/4, SEC.35, T42N, R29W, WHITE RIVER, SD 57579 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • NORRIS, SD (ZIP 57560 Sector) | LOW (11/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WOOD, SD (ZIP 57585 Sector) | LOW (10/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — Mellette County, South Dakota Environmental Due Diligence
How many EPA-regulated environmental sites are in Mellette County, South Dakota?
Public U.S. EPA records track 9 regulated facilities in Mellette County, South Dakota (ranking #110 of 110 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 Mellette County have the highest regulated facility density?
Within Mellette County, the highest concentrations of EPA-tracked facilities are located in ZIP 57585 (Wood, 3 sites), spanning municipal corridors including Wood (3 sites), Norris (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Mellette County?
Across Mellette 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 Mellette County, SD?
Geologic indoor air screening places Mellette 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 Mellette County, SD?
Federal records track 2 Safe Drinking Water (SDWIS) facilities, 10 Clean Water Act NPDES permits, and 2 impaired water dischargers in Mellette County, alongside 1 historical FEMA federal disaster declarations (0 flood/storm events).
Does Mellette County, SD have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Mellette 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.