Waukesha County, Wisconsin — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Waukesha County, WI?
In Waukesha County, Wisconsin, public U.S. EPA records track 3,432 regulated facilities (#2 of 94 in Wisconsin), including 11 (0.3%) High-Risk sites and $6,325,860 in federal penalties. Countywide due diligence also covers 680 Safe Drinking Water (SDWIS) facilities, 407 Clean Water NPDES permits, 2 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Waukesha 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📊 Waukesha County, WI Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Waukesha County
ZIP Codes in Waukesha County
Top EPA Regulated Facilities in Waukesha 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 • MENOMONEE FALLS, WI (ZIP 53051 Sector) | HIGH (78/100) | Violation (6 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MERTON, WI (ZIP 53056 Sector) | HIGH (68/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • PEWAUKEE, WI (ZIP 53072 Sector) | HIGH (67/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • MUKWONAGO, WI (ZIP 53149 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MENOMONEE FALLS, WI (ZIP 53051 Sector) | MODERATE (59/100) | Resolved / Historical Non-Compliance (9 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • PEWAUKEE, WI (ZIP 53072 Sector) | MODERATE (53/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • WAUKESHA, WI (ZIP 53188 Sector) | MODERATE (53/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • BROOKFIELD, WI (ZIP 53005 Sector) | MODERATE (50/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| TJ ALLIS BLDRS FREE PREVIEW (LOW RISK) | 1409 ELLIS ST, WAUKESHA, WI 53186 | LOW (17/100) | 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 |
| TIRE CENTERS INC FREE PREVIEW (LOW RISK) | 1308 S WEST AVE, WAUKESHA, WI 53186 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| RESIDENCIAL WINZEINREID FREE PREVIEW (LOW RISK) | W269 S4242 RIVER RD, WAUKESHA, WI 53188 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Waukesha County, Wisconsin Environmental Due Diligence
How many EPA-regulated environmental sites are in Waukesha County, Wisconsin?
Public U.S. EPA records track 3,432 regulated facilities in Waukesha County, Wisconsin (ranking #2 of 94 jurisdictions in WI). Of those, 11 (0.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 50 (1.5%) have active non-compliance quarters.
Which ZIP codes and cities in Waukesha County have the highest regulated facility density?
Within Waukesha County, the highest concentrations of EPA-tracked facilities are located in ZIP 53186 (Waukesha, 417 sites), ZIP 53051 (Menomonee Falls, 389 sites), ZIP 53151 (New Berlin, 289 sites), spanning municipal corridors including Waukesha (694 sites), Menomonee Falls (412 sites), New Berlin (339 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Waukesha County?
Across Waukesha County, 2,356 facilities (68.6% 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 Waukesha County, WI?
Geologic indoor air screening places Waukesha 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 Waukesha County, WI?
Federal records track 680 Safe Drinking Water (SDWIS) facilities, 407 Clean Water Act NPDES permits, and 166 impaired water dischargers in Waukesha County, alongside 2 historical FEMA federal disaster declarations (2 flood/storm events).
Does Waukesha County, WI have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Waukesha 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.