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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Home › States › South Dakota › Unk, SD
6-IN-1 MUNICIPAL ENVIRONMENTAL, WATER, SOIL & FLOOD HUB • UNK, SD

Unk, South Dakota — Flood Zone, Tap Water Quality, Soil Foundation, Radon & EPA Hazards

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Public U.S. EPA records track 22 regulated facilities in Unk, South Dakota (Lake County), including 0 High-Risk sites (0.0%) and 1 active violators. In addition to industrial waste, Unk properties are screened for Tap Water & Watershed Permits (20 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 2 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites
22
High-Risk (0.0% vs 0.7% State)
0
Active Violators (4.5%)
1
Drinking & Clean Water
20
Federal Penalties
$0

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

📊 Unk, SD Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)
1. Municipal Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 1 (4.5%)
Clean Water (NPDES) & Drinking Water (SDWIS) 20 (90.9%)
Active EPA Non-Compliance Dockets 1 (4.5%)
High-Risk Enforcement Facilities 0 (0.0%)
2. FEMA NRI & USGS Hazard Index (1–10) Very Low (32.6/100)
🌊 Flood Exposure 3/10 • Very Low
🔥 Wildfire Hazard 5/10 • Very Low
☀️ Extreme Heat 4/10 • Very Low
🌪️ Severe Wind / Storm 7/10 • Relatively Moderate
🫨 USGS Earthquake 2/10 • Very Low
3. City vs. County & State Benchmark
Unk High-Risk Rate 0.0%
Lake County Average 1.6%
South Dakota (SD) Statewide Avg 0.7%
Unlock Street-Level Dossier: Paid report reveals exact facility names, distances in feet, USDA soil LEP %, water table depth, and parcel flood zone.
🔒 Scan a Property Address in Unk →

ZIP Codes in Unk, SD

Highest-Scored EPA Regulated Facilities in Unk, SD

100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).

Unlock Full Unk Dossier →
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 • UNK, SD (ZIP 99999 Sector) MODERATE (30/100) Violation Identified (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) MODERATE (30/100) Resolved / Historical Non-Compliance (2 qtrs NC) 🔒 2 Qtrs Non-Compliance • Unlock →
US ACOE: AREA 15 FORT RANDALL DAM FREE PREVIEW (LOW RISK) T103N R73W SECTION 2, UNK, SD 99999 LOW (16/100) No Violation Identified (0 qtrs NC) $0
TOWN OF IGLOO FREE PREVIEW (LOW RISK) UNK, UNK, SD 99999 LOW (13/100) No Violation Identified (0 qtrs NC) $0
PACER CORPORATION WHITE BEAR MICA PLANT FREE PREVIEW (LOW RISK) SOUTH HIGHWAY 385, UNK, SD 99999 LOW (11/100) No Violation Identified (0 qtrs NC) $0
WILHELM COURT FREE PREVIEW (LOW RISK) UNK, UNK, SD 99999 LOW (10/100) Inactive (0 qtrs NC) $0
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) LOW (10/100) Inactive (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) LOW (10/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) LOW (10/100) No Violation Identified (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) LOW (9/100) Inactive (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) LOW (9/100) Inactive (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • UNK, SD (ZIP 99999 Sector) LOW (9/100) Inactive (0 qtrs NC) 🔒 Active Permit Dossier • Unlock →
🔒 + 10 Additional Regulated & Enforcement Records in Unk, SD Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Unk, South Dakota Environmental Risk & Radon

How many EPA-regulated facilities are in Unk, SD?

U.S. EPA records track 22 regulated facilities in Unk, South Dakota, including 0 high-risk sites (0.0%), 1 active violators (4.5%), and 1 RCRA hazardous waste handlers (4.5%).

Which ZIP codes in Unk, SD have the most EPA-tracked sites?

Within Unk, regulated facilities are primarily concentrated across local postal codes.

How can I check a specific house or commercial property in Unk, SD?

Enter the exact street address in Unk into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.

Is tap water safe in Unk, SD and how many EPA water permits exist?

In Unk, SD, federal registries track 19 Safe Drinking Water (SDWIS) facilities, 1 Clean Water Act NPDES permits, and 0 impaired water body dischargers.

What is the soil foundation risk and FEMA flood disaster history in Unk, SD?

USDA regional soil screening for Unk indicates a MODERATE shrink-swell foundation signal, and Lake County has recorded 2 federal FEMA disaster declarations (2 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.