Mercer Island, Washington — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Mercer Island, WA?
Public U.S. EPA records track 67 regulated facilities in Mercer Island, Washington (King County), including 3 High-Risk sites (4.5%) and 6 active violators. In addition to industrial waste, Mercer Island properties are screened for Tap Water & Watershed Permits (29 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 4 County FEMA Disaster Declarations, and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Mercer Island, WA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Mercer Island, WA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)ZIP Codes in Mercer Island, WA
Highest-Scored EPA Regulated Facilities in Mercer Island, WA
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 • MERCER ISLAND, WA (ZIP 98040 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | HIGH (64/100) | Significant Violation (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | MODERATE (30/100) | Violation Identified (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MERCER ISLAND, WA (ZIP 98040 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| USWCOM MERCER ISLAND CO FREE PREVIEW (LOW RISK) | 3853 84TH AVENUE SOUTHEAST, MERCER ISLAND, WA 98040 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| SHOREWOOD HEIGHTS APTS FREE PREVIEW (LOW RISK) | 3209 SHOREWOOD DR, MERCER ISLAND, WA 98040 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| SMITH TRUCKING CO FREE PREVIEW (LOW RISK) | 4204 88TH AVE SE, MERCER ISLAND, WA 98040 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| THOMAS CENTER FREE PREVIEW (LOW RISK) | 7433 SE 27TH ST, MERCER ISLAND, WA 98040 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Mercer Island, Washington Environmental Risk & Radon
How many EPA-regulated facilities are in Mercer Island, WA?
U.S. EPA records track 67 regulated facilities in Mercer Island, Washington, including 3 high-risk sites (4.5%), 6 active violators (9.0%), and 39 RCRA hazardous waste handlers (58.2%).
Which ZIP codes in Mercer Island, WA have the most EPA-tracked sites?
Within Mercer Island, regulated facilities are primarily concentrated across ZIP 98040 (69 sites).
How can I check a specific house or commercial property in Mercer Island, WA?
Enter the exact street address in Mercer Island into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.
Is tap water safe in Mercer Island, WA and how many EPA water permits exist?
In Mercer Island, WA, federal registries track 1 Safe Drinking Water (SDWIS) facilities, 28 Clean Water Act NPDES permits, and 0 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Mercer Island, WA?
USDA regional soil screening for Mercer Island indicates a MODERATE shrink-swell foundation signal, and King County has recorded 4 federal FEMA disaster declarations (3 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.