Multnomah County, Oregon — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Multnomah County, OR?
In Multnomah County, Oregon, public U.S. EPA records track 3,645 regulated facilities (#1 of 66 in Oregon), including 108 (3.0%) High-Risk sites and $26,445,961 in federal penalties. Countywide due diligence also covers 67 Safe Drinking Water (SDWIS) facilities, 1,138 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Multnomah 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📊 Multnomah County, OR Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Multnomah County
ZIP Codes in Multnomah County
Top EPA Regulated Facilities in Multnomah 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 • PORTLAND, OR (ZIP 97220 Sector) | HIGH (86/100) | Significant Violation (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • GRESHAM, OR (ZIP 97030 Sector) | HIGH (81/100) | Significant Violation (2 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • PORTLAND, OR (ZIP 97202 Sector) | HIGH (74/100) | Violation (9 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • TROUTDALE, OR (ZIP 97060 Sector) | HIGH (73/100) | Significant Violation (5 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • PORTLAND, OR (ZIP 97231 Sector) | HIGH (73/100) | Violation Identified (11 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • PORTLAND, OR (ZIP 97217 Sector) | HIGH (72/100) | Violation (6 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • PORTLAND, OR (ZIP 97220 Sector) | HIGH (71/100) | Violation (10 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • PORTLAND, OR (ZIP 97218 Sector) | HIGH (71/100) | Significant Violation (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| PORTLAND WATER BUREAU OPERATIONS BLDG FREE PREVIEW (LOW RISK) | 2010 N INTERSTATE AVE, PORTLAND, OR 97227 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| MCKINSTRY CO LLC FREE PREVIEW (LOW RISK) | 12021 NE AIRPORT WAY STE G, PORTLAND, OR 97220 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| ODEQ SE 50TH & SALMON DRUG SITE FREE PREVIEW (LOW RISK) | SE 50TH & SALMON, PORTLAND, OR 97202 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| PORTLAND MATERIAL RECYCLING CENTER FREE PREVIEW (LOW RISK) | 7717 NE 21ST AVE, PORTLAND, OR 97211 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Multnomah County, Oregon Environmental Due Diligence
How many EPA-regulated environmental sites are in Multnomah County, Oregon?
Public U.S. EPA records track 3,645 regulated facilities in Multnomah County, Oregon (ranking #1 of 66 jurisdictions in OR). Of those, 108 (3.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 79 (2.2%) have active non-compliance quarters.
Which ZIP codes and cities in Multnomah County have the highest regulated facility density?
Within Multnomah County, the highest concentrations of EPA-tracked facilities are located in ZIP 97217 (Portland, 363 sites), ZIP 97210 (Portland, 310 sites), ZIP 97230 (Portland, 286 sites), spanning municipal corridors including Portland (4,025 sites), Gresham (307 sites), Portland City Of (2 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Multnomah County?
Across Multnomah County, 3,035 facilities (83.3% 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 Multnomah County, OR?
Geologic indoor air screening places Multnomah 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 Multnomah County, OR?
Federal records track 67 Safe Drinking Water (SDWIS) facilities, 1,138 Clean Water Act NPDES permits, and 1,051 impaired water dischargers in Multnomah County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Multnomah County, OR have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Multnomah 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.