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 STATE ENVIRONMENTAL, WATER, SOIL & FLOOD HUB • WI

Wisconsin (WI) — Flood Zone, Tap Water Quality, Soil Foundation, Radon & EPA Hazards

Scan an Address in Wisconsin →

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).

Total EPA Sites
57,405
High-Risk Sites (0.6%)
329
Active Violators (2.8%)
1,603
Drinking & Clean Water
29,803
Federal Penalties
$209,135,330

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
🌊 Flood Zone & FEMA Disaster History
3 Statewide FEMA Declarations (3 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Mandatory Insurance Status Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Regional Shrink-Swell Signal: MODERATE • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
21,084 SDWIS Systems • 8,719 NPDES Permits
🔒 2,757 Impaired Water (303d) & 2,560 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L)
Low / Non-Karst Bedrock Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Wisconsin (WI) Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)
1. Regulatory & Water Program Composition
RCRA Hazardous Waste Generators 27,115 (47.2%)
Clean Water (NPDES) & Drinking Water (SDWIS) 29,803 (51.9%)
Active EPA Non-Compliance Dockets 1,603 (2.8%)
High-Risk Enforcement Facilities 329 (0.6%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively High (98.4/100)
🌊 Flood Exposure 10/10 • Relatively High
🔥 Wildfire Hazard 3/10 • Very Low
☀️ Extreme Heat 10/10 • Relatively High
🌪️ Severe Wind / Storm 10/10 • Very High
🫨 USGS Earthquake 8/10 • Relatively Low
3. High-Risk Density vs. U.S. Baseline
Wisconsin (WI) High-Risk Rate 0.6%
U.S. National EPA Baseline 3.6%
Why Scan a Specific Street Address? Public state pages show aggregate counts only. A paid property report unlocks exact facility names & distances in feet, USDA soil LEP % & water table depth, utility water violations, and parcel FEMA flood zone.
🔒 Run 1-Mile Property Address Scan →

Major Municipal Environmental Directories in Wisconsin

Milwaukee
3,332 sites
10 High
Madison
1,263 sites
9 High
Green Bay
945 sites
18 High
Waukesha
694 sites
1 High
Appleton
635 sites
5 High
Racine
498 sites
1 High
Eau Claire
498 sites
2 High
Kenosha
484 sites
1 High
Oshkosh
461 sites
5 High
Janesville
434 sites
2 High
Menomonee Falls
412 sites
3 High
Superior
393 sites
4 High
Sheboygan
388 sites
5 High
Wausau
377 sites
4 High
La Crosse
363 sites
5 High
West Allis
349 sites
0 High
Fond Du Lac
344 sites
0 High
New Berlin
339 sites
0 High
Brookfield
304 sites
0 High
Manitowoc
292 sites
6 High
Neenah
290 sites
3 High
Oak Creek
262 sites
4 High
Beloit
247 sites
1 High
Wisconsin Rapids
237 sites
2 High
West Bend
236 sites
1 High
Chippewa Falls
233 sites
1 High
Stevens Point
226 sites
2 High
Germantown
223 sites
1 High
Wauwatosa
221 sites
1 High
Oconomowoc
211 sites
1 High
Watertown
203 sites
1 High
Franklin
194 sites
1 High
Marshfield
189 sites
1 High
Middleton
180 sites
1 High
Hudson
178 sites
0 High
Mequon
178 sites
0 High
Sun Prairie
167 sites
0 High
Pewaukee
163 sites
2 High
Rhinelander
158 sites
3 High
Hayward
158 sites
1 High
Menomonie
150 sites
1 High
Ashland
148 sites
2 High
Rice Lake
145 sites
1 High
De Pere
144 sites
0 High
Menasha
143 sites
0 High
Onalaska
142 sites
1 High
Greenfield
142 sites
0 High
Kaukauna
137 sites
3 High
Beaver Dam
136 sites
0 High
Grafton
136 sites
0 High
Burlington
131 sites
1 High
River Falls
129 sites
0 High
Sturgeon Bay
129 sites
0 High
Elkhorn
128 sites
1 High
Muskego
125 sites
1 High
Schofield
123 sites
2 High
New Richmond
123 sites
0 High
Fort Atkinson
123 sites
0 High
Marinette
122 sites
6 High
Cudahy
121 sites
1 High

Counties in Wisconsin (120)

County Total Sites High Risk RCRA Waste
Milwaukee County 5,147 19 4,567
Waukesha County 3,432 11 2,356
Dane County 2,848 22 1,757
Brown County 1,642 17 1,061
Outagamie County 1,369 9 866
Racine County 1,261 6 808
Marathon County 1,191 14 674
Winnebago County 1,169 10 789
Rock County 1,068 7 651
Washington County 1,062 4 576
Kenosha County 1,046 5 574
Sheboygan County 976 10 574
Walworth County 913 5 468
Ozaukee County 910 3 479
Jefferson County 792 5 453
Fond Du Lac County 789 1 425
La Crosse County 769 8 466
Dodge County 707 5 344
Manitowoc County 694 7 429
Eau Claire County 689 3 437
Wood County 687 4 391
Chippewa County 657 5 352
Door County 641 0 149
Douglas County 631 3 412
Oneida County 628 3 220
Vilas County 586 0 121
Portage County 576 4 308
Sauk County 564 5 253
St. Croix County 554 2 225
Barron County 549 5 313
Columbia County 548 9 272
Polk County 508 4 282
Marinette County 503 6 223
Waupaca County 484 4 222
Oconto County 440 7 161
Grant County 404 8 172
Shawano County 401 4 162
Monroe County 387 2 196
Pierce County 384 2 213
Dunn County 371 1 209
Clark County 347 4 180
Sawyer County 343 2 154
Waushara County 343 1 105
Juneau County 325 3 134
Burnett County 316 3 121
Trempealeau County 310 1 162
Calumet County 304 2 146
Bayfield County 298 1 113
Ashland County 264 4 154
Washburn County 264 0 126
Adams County 263 0 50
Lincoln County 263 2 149
Jackson County 257 3 96
Langlade County 255 1 112
Green County 242 5 120
Green Lake County 241 2 119
Rusk County 239 3 127
Iowa County 236 3 83
Marquette County 233 1 62
Vernon County 231 5 98
Kewaunee County 225 2 96
Price County 216 1 123
St Croix County 201 0 198
Crawford County 193 1 102
Taylor County 193 0 96
Buffalo County 187 1 68
Richland County 161 2 68
Lafayette County 144 3 53
Brown County 130 6 6
Iron County 125 0 64
Forest County 97 1 29
Pepin County 77 1 33
Florence County 72 0 21
Milwaukee County 41 2 13
Menominee County 38 0 25
Waukesha County 37 1 9
Forest County 26 0 1
Outagamie County 25 1 0
Rock County 21 0 4
Saint Croix County 17 0 12
Dane County 16 0 0
Winnebago County 15 0 3
Marathon County 14 2 2
Menominee County 14 0 0
Vilas County 14 0 0
Kenosha County 13 0 5
Walworth County 13 0 0
Washington County 13 0 0
Ashland County 12 1 3
Dodge County 12 0 2
Racine County 12 0 2
La Crosse County 11 0 4
Sawyer County 11 0 1
Sauk County 10 0 0
Chippewa County 9 0 1
Manitowoc County 9 1 2
Polk County 9 0 5
Shawano County 9 0 0
Douglas County 8 0 2
Fond Du Lac County 8 0 1
Sheboygan County 8 0 2
Clark County 7 0 0
Kewaunee County 7 0 1
Oneida County 7 0 2
Portage County 7 0 1
Wood County 7 0 1
Dunn County 6 0 2
Jackson County 6 0 1
Portable Source County 6 0 1
St. Croix County 6 0 3
Waupaca County 6 0 0
Barron County 5 0 1
Burnett County 5 0 2
Ozaukee County 5 0 0
Pierce County 5 0 3
Waushara County 5 0 0
Bayfield County 4 0 1
Calumet County 4 0 2
Eau Claire County 4 0 1
Jefferson County 4 1 0

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).

Unlock Full Unredacted Dossier →
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
🔒 + 57,393 Additional Regulated & Enforcement Records in Wisconsin Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

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.