Honolulu County, Hawaii — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Honolulu County, HI?
In Honolulu County, Hawaii, public U.S. EPA records track 798 regulated facilities (#4 of 9 in Hawaii), including 11 (1.4%) High-Risk sites and $1,004,214 in federal penalties. Countywide due diligence also covers 1 Safe Drinking Water (SDWIS) facilities, 726 Clean Water NPDES permits, 5 FEMA Federal Disaster Declarations (4 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
Honolulu County, HI 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Honolulu County, HI Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Honolulu County
ZIP Codes in Honolulu County
Top EPA Regulated Facilities in Honolulu County, HI
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 • KAPOLEI, HI (ZIP 96707 Sector) | HIGH (94/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • PEARL CITY, HI (ZIP 96782 Sector) | HIGH (79/100) | Violation Identified (10 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • HONOLULU, HI (ZIP 96817 Sector) | MODERATE (49/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • HONOLULU, HI (ZIP 96819 Sector) | MODERATE (46/100) | Violation Identified (4 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • WAIANAE, HI (ZIP 96792 Sector) | MODERATE (46/100) | Violation Identified (9 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • HONOLULU, HI (ZIP 96817 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • AIEA, HI (ZIP 96701 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HONOLULU, HI (ZIP 96822 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| HONOLULU INTERNATIONAL AIRPORT FREE PREVIEW (LOW RISK) | HONOLULU INTERNATIONAL AIRPORT, HONOLULU, HI 96819 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| REHABILITATION OF LOCALIZED STREETS, PHASE 13D FREE PREVIEW (LOW RISK) | VARIOUS STREETS IN KANEOHE & WAIKANE, KANEOHE, HI 96744 | LOW (17/100) | Unknown (0 qtrs NC) | $0 |
| SYSTEMS RESOURCES, INC. FREE PREVIEW (LOW RISK) | 525 KOULA STREET, HONOLULU, HI 96813 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| M. H. ELECTRIC COMPANY FREE PREVIEW (LOW RISK) | 2688 KILIHAU ST, HONOLULU, HI 96819 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Honolulu County, Hawaii Environmental Due Diligence
How many EPA-regulated environmental sites are in Honolulu County County, Hawaii?
Public U.S. EPA records track 798 regulated facilities in Honolulu County County, Hawaii (ranking #4 of 9 jurisdictions in HI). Of those, 11 (1.4%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 41 (5.1%) have active non-compliance quarters.
Which ZIP codes and cities in Honolulu County County have the highest regulated facility density?
Within Honolulu County County, the highest concentrations of EPA-tracked facilities are located in ZIP 96817 (Honolulu, 341 sites), ZIP 96744 (Kaneohe, 224 sites), ZIP 96792 (Waianae, 205 sites), spanning municipal corridors including Kaneohe (220 sites), Waianae (196 sites), Haleiwa (69 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Honolulu County County?
Across Honolulu County County, 33 facilities (4.1% 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 Honolulu County County, HI?
Geologic indoor air screening places Honolulu County County in EPA Zone 3 — Low Potential (< 2.0 pCi/L). Counties in EPA Radon Zone 3 have a predicted average indoor radon level below 2.0 pCi/L, indicating lower regional geologic radon risk.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Honolulu County County, HI?
Federal records track 1 Safe Drinking Water (SDWIS) facilities, 726 Clean Water Act NPDES permits, and 342 impaired water dischargers in Honolulu County County, alongside 5 historical FEMA federal disaster declarations (4 flood/storm events).
Does Honolulu County, HI have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Honolulu County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Moderate. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.