Washington County, Oregon — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Washington County, OR?
In Washington County, Oregon, public U.S. EPA records track 256 regulated facilities (#23 of 66 in Oregon), including 3 (1.2%) High-Risk sites and $69,173 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 246 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (0 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Washington County, OR 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Washington County, OR Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Washington County
ZIP Codes in Washington County
Top EPA Regulated Facilities in Washington County, OR
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 • HILLSBORO, OR (ZIP 97045 Sector) | HIGH (70/100) | Significant Violation (1 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WILSONVILLE, OR (ZIP 97070 Sector) | HIGH (64/100) | Significant Violation (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SHERWOOD, OR (ZIP 97140 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • BEAVERTON, OR (ZIP 97007 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HILLSBORO, OR (ZIP 97123 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • PORTLAND, OR (ZIP 97223 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • TUALATIN, OR (ZIP 97062 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • BANKS, OR (ZIP 97106 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| LAKESIDE LUMBER, INC. FREE PREVIEW (LOW RISK) | 10600 SW TUALATIN SHERWOOD RD, TUALATIN, OR 97062 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| S&H HILLSBORO FREE PREVIEW (LOW RISK) | 1748 NE 25TH AVENUE, HILLSBORO, OR 97124 | LOW (18/100) | Unknown (0 qtrs NC) | $0 |
| HILLSBORO DFT OR1 DATA CENTER FREE PREVIEW (LOW RISK) | 5870 NE SCHAAF STREET, HILLSBORO, OR 97124 | LOW (18/100) | Unknown (0 qtrs NC) | $0 |
| KAISER PERMANENTE MEDICAL & DENTAL OFFICE FREE PREVIEW (LOW RISK) | 4855 SW WESTERN AVENUE, BEAVERTON, OR 97005 | LOW (18/100) | Unknown (0 qtrs NC) | $0 |
Frequently Asked Questions — Washington County, Oregon Environmental Due Diligence
How many EPA-regulated environmental sites are in Washington County County, Oregon?
Public U.S. EPA records track 256 regulated facilities in Washington County County, Oregon (ranking #23 of 66 jurisdictions in OR). Of those, 3 (1.2%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 2 (0.8%) have active non-compliance quarters.
Which ZIP codes and cities in Washington County County have the highest regulated facility density?
Within Washington County County, the highest concentrations of EPA-tracked facilities are located in ZIP 97119 (Cornelius, 36 sites), spanning municipal corridors including Gaston (35 sites), Aloha/Beaverton (1 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Washington County County?
Across Washington County County, 3 facilities (1.2% 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 Washington County County, OR?
Geologic indoor air screening places Washington County 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 Washington County County, OR?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 246 Clean Water Act NPDES permits, and 220 impaired water dischargers in Washington County County, alongside 1 historical FEMA federal disaster declarations (0 flood/storm events).
Does Washington County, OR have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Washington County indicates a MODERATE 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.