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Roberts County, South Dakota — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Roberts County, SD?

In Roberts County, South Dakota, public U.S. EPA records track 57 regulated facilities (#23 of 109 in South Dakota), including 0 (0.0%) High-Risk sites and $2,010 in federal penalties. Countywide due diligence also covers 14 Safe Drinking Water (SDWIS) facilities, 51 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#23/109)
57
High-Risk (0.0% vs 0.7% State)
0
Active Violators (8.8%)
5
Drinking & Clean Water
65
Federal Penalties
$2,010

Roberts 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
🌊 Flood Zone & FEMA Disaster History
3 County FEMA Declarations (2 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: MODERATE • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
14 SDWIS Systems • 51 NPDES Permits
🔒 3 Impaired Water (303d) & 12 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Roberts County, SD Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 13 (22.8%)
Clean Water (NPDES) & Drinking Water (SDWIS) 65 (100%)
Active EPA Non-Compliance Dockets 5 (8.8%)
High-Risk Enforcement Facilities 0 (0.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Very Low (37.8/100)
🌊 Flood Exposure 3/10 • Low Hazard
🔥 Wildfire Hazard 3/10 • Low Hazard
☀️ Extreme Heat 1/10 • Very Low Hazard
🌪️ Severe Wind / Storm 5/10 • Moderate Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Roberts County High-Risk % 0.0%
South Dakota (SD) Statewide Avg 0.7%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
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Top EPA Regulated Facilities in Roberts 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).

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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 • SISSETON, SD (ZIP 57262 Sector) MODERATE (49/100) Violation Identified (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • ROSHOLT, SD (ZIP 57260 Sector) MODERATE (45/100) Violation Identified (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • AGENCY VILLAGE, SD (ZIP 57262 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • AGENCY VILLAGE, SD (ZIP 57262 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • SISSETON, SD (ZIP 57262 Sector) MODERATE (30/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • , SD (ZIP 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 • , SD (ZIP Sector) MODERATE (25/100) Resolved / Historical Non-Compliance (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • SUMMIT, SD (ZIP 57266 Sector) MODERATE (23/100) Violation Identified (4 qtrs NC) 🔒 4 Qtrs Non-Compliance • Unlock →
JOE STACK FREE PREVIEW (LOW RISK) 47206 102ND ST, ROSHOLT, SD 57260 LOW (17/100) No Violation Identified (0 qtrs NC) $0
DAKOTA MACHINE WORKS FREE PREVIEW (LOW RISK) 300 NORTH MAIN, CORONA, SD 57227 LOW (17/100) No Violation Identified (0 qtrs NC) $0
RANDYS BODY SHOP FREE PREVIEW (LOW RISK) MAIN STREET, CLAIRE CITY, SD 57224 LOW (17/100) No Violation Identified (0 qtrs NC) $0
AGENCY C-STORE FREE PREVIEW (LOW RISK) 45680 VETERAN'S MEMORIAL HIGHWAY, SISSETON, SD 57262 LOW (17/100) No Violation Identified (0 qtrs NC) $0
🔒 + 45 Additional Regulated & Enforcement Records in Roberts County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Roberts County, South Dakota Environmental Due Diligence

How many EPA-regulated environmental sites are in Roberts County, South Dakota?

Public U.S. EPA records track 57 regulated facilities in Roberts County, South Dakota (ranking #23 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 5 (8.8%) have active non-compliance quarters.

Which ZIP codes and cities in Roberts County have the highest regulated facility density?

Within Roberts County, the highest concentrations of EPA-tracked facilities are located in ZIP 57266 (Summit, 17 sites), ZIP 57260 (Rosholt, 11 sites), ZIP 57224 (Claire City, 5 sites), spanning municipal corridors including Sisseton (20 sites), Summit (17 sites), Ortley (3 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Roberts County?

Across Roberts County, 13 facilities (22.8% 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 Roberts County, SD?

Geologic indoor air screening places Roberts 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 Roberts County, SD?

Federal records track 14 Safe Drinking Water (SDWIS) facilities, 51 Clean Water Act NPDES permits, and 3 impaired water dischargers in Roberts County, alongside 3 historical FEMA federal disaster declarations (2 flood/storm events).

Does Roberts County, SD have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Roberts 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.

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