Wisconsin (WI) — Flood Zone, Tap Water Quality, Soil Foundation, Radon & EPA Hazards
According to public U.S. EPA, USDA, and FEMA registries (current as of November 01, 2026), Wisconsin tracks 57,405 EPA-regulated facilities, including 329 High-Risk sites (0.6%), 1,603 active violators, and $209,135,330 in federal penalties. Statewide environmental due diligence also covers 21,084 Safe Drinking Water (SDWIS) facilities, 8,719 Clean Water NPDES permits, 3 historical FEMA disaster declarations, USDA Soil Shrink-Swell (MODERATE regional signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Wisconsin (WI) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Screening Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Wisconsin (WI) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Major Municipal Environmental Directories in Wisconsin
Counties in Wisconsin (120)
Highest-Density ZIP Codes in Wisconsin
| ZIP Code | City | Total Sites | High Risk |
|---|---|---|---|
| 54303 | Ashwaubenon | 267 | 7 |
| 54143 | Marinette | 125 | 6 |
| 54880 | Superior | 398 | 4 |
| 54304 | Green Bay | 308 | 4 |
| 54220 | Manitowoc | 281 | 4 |
| 53154 | Oak Creek | 250 | 4 |
| 54474 | Rothschild | 41 | 4 |
| 53051 | Menomonee Falls | 389 | 3 |
| 53081 | Sheboygan | 313 | 3 |
| 54401 | Wausau | 291 | 3 |
| 54601 | La Crosse | 254 | 3 |
| 54914 | Appleton | 238 | 3 |
| 54901 | Oshkosh | 228 | 3 |
| 54501 | Rhinelander | 188 | 3 |
| 54130 | Kaukauna | 165 | 3 |
| 54302 | Green Bay | 143 | 3 |
| 54455 | Mosinee | 130 | 3 |
| 53190 | Whitewater | 94 | 3 |
| 53963 | Waupun | 72 | 3 |
| 53536 | Evansville | 47 | 3 |
| 53181 | Twin Lakes | 30 | 3 |
| 53235 | St. Francis | 24 | 3 |
| 53923 | Cambria | 16 | 3 |
| 53209 | Milwaukee | 337 | 2 |
| 54956 | Neenah | 297 | 2 |
| 53704 | Madison | 280 | 2 |
| 53207 | Milwaukee | 272 | 2 |
| 53204 | Milwaukee | 241 | 2 |
| 54481 | Stevens Point | 214 | 2 |
| 53713 | Madison | 209 | 2 |
| 54476 | Schofield | 180 | 2 |
| 53072 | Pewaukee | 179 | 2 |
| 54806 | Ashland | 152 | 2 |
| 53718 | Madison | 142 | 2 |
| 53121 | Burlington | 140 | 2 |
| 54311 | Rockland | 132 | 2 |
| 53901 | Sun Prairie | 131 | 2 |
| 54656 | Sparta | 117 | 2 |
| 54155 | Hobart | 115 | 2 |
| 53913 | Baraboo | 114 | 2 |
| 53566 | Monroe | 111 | 2 |
| 54981 | Waupaca | 101 | 2 |
| 53085 | Sheboygan Falls | 100 | 2 |
| 53593 | Verona | 98 | 2 |
| 53597 | Waunakee | 93 | 2 |
| 53534 | Fulton | 80 | 2 |
| 53014 | Chilton | 74 | 2 |
| 54011 | Ellsworth | 57 | 2 |
| 54165 | Howard | 55 | 2 |
| 53575 | Oregon | 55 | 2 |
| 54840 | Grantsburg | 53 | 2 |
| 54217 | Luxemburg | 52 | 2 |
| 53813 | Lawcaster | 48 | 2 |
| 53122 | Elm Grove | 47 | 2 |
| 54457 | Rome | 45 | 2 |
| 54732 | Cornell | 27 | 2 |
| 53531 | Deerfield | 27 | 2 |
| 54221 | Manitowoc | 19 | 2 |
| 53510 | Belmont | 18 | 2 |
| 53811 | Hazel Green | 18 | 2 |
Highest-Scored EPA Enforcement & Contamination Facilities in Wisconsin
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 Score (0–100) | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • MOSINEE, WI (ZIP 54455 Sector) | HIGH (95/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WISCONSIN RAPIDS, WI (ZIP 54495 Sector) | HIGH (90/100) | Significant Violation (10 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • MADISON, WI (ZIP 53713 Sector) | HIGH (89/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • OAK CREEK, WI (ZIP 53154 Sector) | HIGH (88/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MANITOWOC, WI (ZIP 54220 Sector) | HIGH (86/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • JANESVILLE, WI (ZIP 53545 Sector) | HIGH (85/100) | Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • SAINT FRANCIS, WI (ZIP 53235 Sector) | HIGH (82/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MILWAUKEE, WI (ZIP 53209 Sector) | HIGH (82/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| MAYSTEEL CORP CABINETRY DIV FREE PREVIEW (LOW RISK) | COUNTY TRK W, ALLENTON, WI 53002 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| K MART STORE 3075 FREE PREVIEW (LOW RISK) | N77 W14435 APPLETON AVE, MENOMONEE FALLS, WI 53051 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| SHERMAN MIDDLE SCHOOL - MADISON METRO SCHOOL DISTRICT FREE PREVIEW (LOW RISK) | 1610 RUSKIN ST, MADISON, WI 53704 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
| ASHWAUBENON ALIGNMENT FREE PREVIEW (LOW RISK) | 599 BORVAN AVE, GREEN BAY, WI 54304 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Wisconsin (WI) Environmental Due Diligence & EPA Dataset
How many EPA-regulated environmental sites and high-risk facilities are in Wisconsin?
Public U.S. EPA records track 57,405 regulated facilities across Wisconsin. Of those, 329 (0.6%) are classified in the High-Risk tier due to formal enforcement actions, penalties, or toxic chemical releases, and 1,603 (2.8%) have active non-compliance quarters.
Which counties and ZIP codes in Wisconsin have the highest concentration of EPA-regulated sites?
In Wisconsin, the highest regulated facility volumes are concentrated in Milwaukee County (5,147 sites), Waukesha County (3,432 sites), Dane County (2,848 sites), Brown County (1,642 sites), with key high-risk postal sectors including ZIP 54303 (Ashwaubenon, 7 high-risk), ZIP 54143 (Marinette, 6 high-risk), ZIP 54880 (Superior, 4 high-risk), ZIP 54304 (Green Bay, 4 high-risk).
How many drinking water systems (SDWIS), Clean Water permits, and FEMA disaster declarations are recorded in Wisconsin?
Statewide in Wisconsin, federal registries track 21,084 Safe Drinking Water (SDWIS) facilities, 8,719 Clean Water Act NPDES permits, and 2,757 impaired water body (303d) dischargers, alongside 3 historical FEMA disaster declarations.
What is the EPA Radon Zone and USDA Soil Foundation Risk for properties in Wisconsin?
Regional geologic screening places Wisconsin in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L) with USDA regional soil shrink-swell rated MODERATE. Run a street address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.