Jefferson County, Wisconsin — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Jefferson County, WI?
In Jefferson County, Wisconsin, public U.S. EPA records track 792 regulated facilities (#15 of 94 in Wisconsin), including 5 (0.6%) High-Risk sites and $5,330,058 in federal penalties. Countywide due diligence also covers 206 Safe Drinking Water (SDWIS) facilities, 132 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Jefferson 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📊 Jefferson County, WI Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Jefferson County
ZIP Codes in Jefferson County
Top EPA Regulated Facilities in Jefferson 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).
| 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 • WHITEWATER, WI (ZIP 53190 Sector) | HIGH (69/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • SULLIVAN, WI (ZIP 53178 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • FORT ATKINSON, WI (ZIP 53538 Sector) | MODERATE (50/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • JOHNSON CREEK, WI (ZIP 53038 Sector) | MODERATE (42/100) | Violation Identified (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • WATERTOWN, WI (ZIP 53094 Sector) | MODERATE (42/100) | Violation Identified (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • KOSHKONONG, TOWN OF, WI (ZIP 53538 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • PALMYRA, WI (ZIP 53156 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WHITEWATER, WI (ZIP 53190 Sector) | MODERATE (38/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| ASHLAND INC FREE PREVIEW (LOW RISK) | 260 GRELL LANE, JOHNSON CREEK, WI 53038 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| RIVERSIDE FARM FREE PREVIEW (LOW RISK) | W6440 RIVERSIDE DR, FT ATKINSON, WI 53538 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| E & R BODY SHOP FREE PREVIEW (LOW RISK) | 101 WISCONSIN ST, WATERTOWN, WI 53094 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| RIVER CITY DISTRIBUTING FREE PREVIEW (LOW RISK) | 1224 CLARK ST, WATERTOWN, WI 53094 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Jefferson County, Wisconsin Environmental Due Diligence
How many EPA-regulated environmental sites are in Jefferson County, Wisconsin?
Public U.S. EPA records track 792 regulated facilities in Jefferson County, Wisconsin (ranking #15 of 94 jurisdictions in WI). Of those, 5 (0.6%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 16 (2.0%) have active non-compliance quarters.
Which ZIP codes and cities in Jefferson County have the highest regulated facility density?
Within Jefferson County, the highest concentrations of EPA-tracked facilities are located in ZIP 53094 (Watertown, 162 sites), ZIP 53538 (Koshkonong, 132 sites), ZIP 53551 (Lake Mills, 72 sites), spanning municipal corridors including Watertown (203 sites), Fort Atkinson (123 sites), Lake Mills (70 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Jefferson County?
Across Jefferson County, 453 facilities (57.2% 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 Jefferson County, WI?
Geologic indoor air screening places Jefferson 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 Jefferson County, WI?
Federal records track 206 Safe Drinking Water (SDWIS) facilities, 132 Clean Water Act NPDES permits, and 32 impaired water dischargers in Jefferson County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Jefferson County, WI have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Jefferson 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.