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 • WI

Oneida County, Wisconsin — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards

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In Oneida County, Wisconsin, public U.S. EPA records track 628 regulated facilities (#25 of 94 in Wisconsin), including 3 (0.5%) High-Risk sites and $5,390,000 in federal penalties. Countywide due diligence also covers 340 Safe Drinking Water (SDWIS) facilities, 74 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).

Total EPA Sites (#25/94)
628
High-Risk (0.5% vs 0.6% State)
3
Active Violators (2.2%)
14
Drinking & Clean Water
414
Federal Penalties
$5,390,000

Oneida County, WI 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
1 County FEMA Declarations (1 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: LOW • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
340 SDWIS Systems • 74 NPDES Permits
🔒 2 Impaired Water (303d) & 21 Violation Dockets Locked
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☢️ EPA Radon & Karst Sinkhole
EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Oneida County, WI 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 220 (35.0%)
Clean Water (NPDES) & Drinking Water (SDWIS) 414 (65.9%)
Active EPA Non-Compliance Dockets 14 (2.2%)
High-Risk Enforcement Facilities 3 (0.5%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Low (62.5/100)
🌊 Flood Exposure 3/10 • Low Hazard
🔥 Wildfire Hazard 1/10 • Very 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
Oneida County High-Risk % 0.5%
Wisconsin (WI) Statewide Avg 0.6%
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 Oneida County, WI

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 • RHINELANDER, WI (ZIP 54501 Sector) HIGH (64/100) Violation Identified (4 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • RHINELANDER, WI (ZIP 54501 Sector) MODERATE (56/100) Violation Identified (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • RHINELANDER, WI (ZIP 54501 Sector) MODERATE (47/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • THREE LAKES, WI (ZIP 54562 Sector) MODERATE (47/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • , WI (ZIP Sector) MODERATE (38/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • RHINELANDER, WI (ZIP 54501 Sector) MODERATE (37/100) Violation Identified (12 qtrs NC) 🔒 12 Qtrs Non-Compliance • Unlock →
🔒 Locked Regulated EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • RHINELANDER, WI (ZIP 54501 Sector) MODERATE (34/100) No Violation Identified (0 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked Regulated EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • MINOCQUA, WI (ZIP 54548 Sector) MODERATE (33/100) Violation Identified (9 qtrs NC) 🔒 9 Qtrs Non-Compliance • Unlock →
WEST ELEMENTARY SCHOOL FREE PREVIEW (LOW RISK) 309 MAPLE, RHINELANDER, WI 54501 LOW (17/100) No Violation Identified (0 qtrs NC) $0
WISCONSIN BELL INC FREE PREVIEW (LOW RISK) 45 N STEVENS ST, RHINELANDER, WI 54501 LOW (16/100) No Violation Identified (0 qtrs NC) $0
NAPA AUTO PARTS FREE PREVIEW (LOW RISK) 9732 HWY 70 W, MINOCQUA, WI 54548 LOW (15/100) No Violation Identified (0 qtrs NC) $0
JAMES WILLIAMS MIDDLE SCHOOL FREE PREVIEW (LOW RISK) 915 ACACIA LN, RHINELANDER, WI 54501 LOW (15/100) No Violation Identified (0 qtrs NC) $0
🔒 + 616 Additional Regulated & Enforcement Records in Oneida County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Oneida County, Wisconsin Environmental Due Diligence

How many EPA-regulated environmental sites are in Oneida County, Wisconsin?

Public U.S. EPA records track 628 regulated facilities in Oneida County, Wisconsin (ranking #25 of 94 jurisdictions in WI). Of those, 3 (0.5%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 14 (2.2%) have active non-compliance quarters.

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

Within Oneida County, the highest concentrations of EPA-tracked facilities are located in ZIP 54501 (Rhinelander, 188 sites), ZIP 54548 (Minocqua, 77 sites), ZIP 54562 (Three Lakes, 20 sites), spanning municipal corridors including Rhinelander (158 sites), Minocqua (79 sites), Woodruff (25 sites).

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

Across Oneida County, 220 facilities (35.0% 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 Oneida County, WI?

Geologic indoor air screening places Oneida County in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Counties in EPA Radon Zone 2 have a predicted average indoor radon level between 2.0 and 4.0 pCi/L. Testing basement or ground-floor living areas is recommended during home inspection.

How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Oneida County, WI?

Federal records track 340 Safe Drinking Water (SDWIS) facilities, 74 Clean Water Act NPDES permits, and 2 impaired water dischargers in Oneida County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).

Does Oneida County, WI have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Oneida County indicates a LOW 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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