PUBLIC DATA SOURCE: U.S. EPA ECHO, FRS, RCRA, TRI & FEMA NFHL 3,230,651 Regulated Sites • All 50 States • Data as of November 01, 2026
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6-IN-1 COUNTY ENVIRONMENTAL, WATER, SOIL & FLOOD HUB • SD

Bennett County, South Dakota — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards

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In Bennett County, South Dakota, public U.S. EPA records track 10 regulated facilities (#108 of 109 in South Dakota), including 2 (20.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 5 Safe Drinking Water (SDWIS) facilities, 9 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#108/109)
10
High-Risk (20.0% vs 0.7% State)
2
Active Violators (20.0%)
2
Drinking & Clean Water
14
Federal Penalties
$0

Bennett 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
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🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: LOW • Pipe Corrosion: Low
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
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🚰 Tap Water (SDWIS) & PFAS Check
5 SDWIS Systems • 9 NPDES Permits
🔒 0 Impaired Water (303d) & 3 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

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

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 1 (10.0%)
Clean Water (NPDES) & Drinking Water (SDWIS) 14 (100%)
Active EPA Non-Compliance Dockets 2 (20.0%)
High-Risk Enforcement Facilities 2 (20.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Very Low (5.9/100)
🌊 Flood Exposure 1/10 • Very Low Hazard
🔥 Wildfire Hazard 3/10 • Low Hazard
☀️ Extreme Heat 1/10 • Very Low Hazard
🌪️ Severe Wind / Storm 3/10 • Low Hazard
🫨 USGS Earthquake 2/10 • Low Seismic Hazard
3. County vs. State & National Benchmark
Bennett County High-Risk % 20.0%
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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Municipalities in Bennett County

Martin (8)

ZIP Codes in Bennett County

57551 — Martin (8)

Top EPA Regulated Facilities in Bennett 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 High-Risk EPA Enforcement Record #1 🔒 Exact Street & Parcel Redacted • ALLEN, SD (ZIP 57714 Sector) HIGH (64/100) Significant Violation (8 qtrs NC) 🔒 8 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • MARTIN, SD (ZIP 57551 Sector) HIGH (64/100) Significant Violation (8 qtrs NC) 🔒 8 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • ALLEN, SD (ZIP 57714 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (5 qtrs NC) 🔒 5 Qtrs Non-Compliance • Unlock →
BENNETT COUNTY MIDDLE SCHOOL ADDITION FREE PREVIEW (LOW RISK) 403 1ST AVE, MARTIN, SD 57551 LOW (18/100) No Violation Identified (0 qtrs NC) $0
MARTIN, CITY OF (WTP) FREE PREVIEW (LOW RISK) 101 MAIN STREET, MARTIN, SD 57551 LOW (12/100) No Violation Identified (0 qtrs NC) $0
CITY OF MARTIN FREE PREVIEW (LOW RISK) 101 MAIN STREET, MARTIN, SD 57551 LOW (12/100) No Violation Identified (0 qtrs NC) $0
R BAR AND GRILL FREE PREVIEW (LOW RISK) , MARTIN, SD 57551 LOW (10/100) Inactive (0 qtrs NC) $0
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • MARTIN, SD (ZIP 57551 Sector) LOW (9/100) Inactive (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • , SD (ZIP Sector) LOW (9/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • MARTIN, SD (ZIP 57551 Sector) LOW (8/100) Inactive (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →

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

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

Public U.S. EPA records track 10 regulated facilities in Bennett County, South Dakota (ranking #108 of 109 jurisdictions in SD). Of those, 2 (20.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 2 (20.0%) have active non-compliance quarters.

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

Within Bennett County, the highest concentrations of EPA-tracked facilities are located in ZIP 57551 (Martin, 8 sites), spanning municipal corridors including Martin (8 sites).

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

Across Bennett County, 1 facilities (10.0% 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 Bennett County, SD?

Geologic indoor air screening places Bennett 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 Bennett County, SD?

Federal records track 5 Safe Drinking Water (SDWIS) facilities, 9 Clean Water Act NPDES permits, and 0 impaired water dischargers in Bennett County, alongside 3 historical FEMA federal disaster declarations (2 flood/storm events).

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

USDA regional soil engineering screening for Bennett County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Low. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.

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