Hawaii (HI) — Flood Zone, Tap Water Quality, Soil Foundation, Radon & EPA Hazards
According to public U.S. EPA, USDA, and FEMA registries (current as of November 01, 2026), Hawaii tracks 9,918 EPA-regulated facilities, including 109 High-Risk sites (1.1%), 187 active violators, and $59,049,207 in federal penalties. Statewide environmental due diligence also covers 206 Safe Drinking Water (SDWIS) facilities, 6,692 Clean Water NPDES permits, 19 historical FEMA disaster declarations, USDA Soil Shrink-Swell (LOW regional signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
Hawaii (HI) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Screening Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Hawaii (HI) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)Major Municipal Environmental Directories in Hawaii
Counties in Hawaii (14)
| County | Total Sites | High Risk | RCRA Waste |
|---|---|---|---|
| Honolulu County | 4,471 | 29 | 1,874 |
| Hawaii County | 1,156 | 8 | 360 |
| Maui County | 949 | 7 | 354 |
| Honolulu County | 798 | 11 | 33 |
| Kauai County | 604 | 9 | 164 |
| Hawaii County | 195 | 6 | 9 |
| Maui County | 193 | 5 | 4 |
| Kauai County | 127 | 4 | 4 |
| Portable Source County | 49 | 0 | 0 |
| Kalawao County | 2 | 0 | 2 |
| Former Trust Territories County | 1 | 0 | 1 |
| Johnson County | 1 | 0 | 0 |
| Keahuolu County | 1 | 0 | 0 |
| Warren County | 1 | 0 | 0 |
Highest-Density ZIP Codes in Hawaii
| ZIP Code | City | Total Sites | High Risk |
|---|---|---|---|
| 96766 | Lihue | 285 | 12 |
| 96707 | Kapolei | 584 | 11 |
| 96720 | Hilo | 431 | 9 |
| 96740 | Kona | 276 | 9 |
| 96819 | Honolulu | 781 | 5 |
| 96817 | Honolulu | 341 | 4 |
| 96782 | Pearl City | 138 | 4 |
| 96734 | Kailua | 183 | 3 |
| 96756 | Koloa | 76 | 3 |
| 96768 | Makawao | 56 | 3 |
| 96732 | Kahului | 257 | 2 |
| 96753 | Kihei | 151 | 2 |
| 96746 | Kapaa | 76 | 2 |
| 96749 | Keaau | 62 | 2 |
| 96784 | Puunene | 32 | 2 |
| 96705 | Eleele | 29 | 2 |
| 96863 | Kaneohe Bay | 27 | 2 |
| 96750 | Kealakekua | 27 | 2 |
| 96796 | Waimea | 26 | 2 |
| 96713 | Hana | 25 | 2 |
| 96813 | Honolulu | 397 | 1 |
| 96797 | Waipahu | 239 | 1 |
| 96744 | Kaneohe | 224 | 1 |
| 96814 | Honolulu | 210 | 1 |
| 96792 | Waianae | 205 | 1 |
| 96793 | Wailuku | 186 | 1 |
| 96701 | Aiea | 161 | 1 |
| 96743 | Waimea | 160 | 1 |
| 96706 | Ewa Beach | 156 | 1 |
| 96860 | Pearl Harbor | 109 | 1 |
| 96818 | Honolulu | 93 | 1 |
| 96717 | Punaluu | 35 | 1 |
| 96741 | Kalaheo | 22 | 1 |
| 96755 | Kapaau | 15 | 1 |
| 96730 | Kaaawa | 5 | 1 |
| 96840 | Honolulu | 4 | 1 |
| 96788 | Pukalani | 4 | 1 |
| 96761 | Lahaina | 166 | 0 |
| 96816 | Honolulu | 138 | 0 |
| 96815 | Honolulu | 127 | 0 |
| 96786 | Wahiawa | 118 | 0 |
| 96822 | Honolulu | 98 | 0 |
| 96825 | Honolulu | 77 | 0 |
| 96789 | Mililani | 76 | 0 |
| 96712 | Sunset Beach | 76 | 0 |
| 96857 | Schofield Barracks | 64 | 0 |
| 96826 | Honolulu | 59 | 0 |
| 96795 | Waimanalo | 57 | 0 |
| 96790 | Kula | 53 | 0 |
| 96763 | Lanai | 52 | 0 |
| 96791 | Waialua | 52 | 0 |
| 96738 | Waikoloa | 46 | 0 |
| 96754 | Kilauea | 43 | 0 |
| 96821 | Honolulu | 42 | 0 |
| 96748 | Kaunakakai | 38 | 0 |
| 96853 | Hickam Air Force Base | 36 | 0 |
| 96778 | Pahoa | 35 | 0 |
| 96752 | Kekaha | 33 | 0 |
| 96722 | Princeville | 33 | 0 |
| 96858 | Fort Shafter | 28 | 0 |
Highest-Scored EPA Enforcement & Contamination Facilities in Hawaii
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 Score (0–100) | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • KAPOLEI, HI (ZIP 96707 Sector) | HIGH (98/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 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 #3 | 🔒 Exact Street & Parcel Redacted • LIHUE, HI (ZIP 96766 Sector) | HIGH (85/100) | Significant Violation (9 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • KAPOLEI, HI (ZIP 96707 Sector) | HIGH (81/100) | Significant Violation (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • PEARL HARBOR, HI (ZIP 96860 Sector) | HIGH (80/100) | Violation Identified (12 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • PEARL CITY, HI (ZIP 96782 Sector) | HIGH (79/100) | Violation Identified (10 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • KAPAA, HI (ZIP 96746 Sector) | HIGH (72/100) | Violation Identified (12 qtrs NC) | 🔒 $10,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HILO, HI (ZIP 96720 Sector) | HIGH (72/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| WINDWARD COMMUNITY COLLEGE FREE PREVIEW (LOW RISK) | 45-720 KEAAHALA RD, KANEOHE, HI 96744 | LOW (25/100) | No Violation Identified (0 qtrs NC) | $0 |
| AVIATION TURBINE OVERHAUL INC FREE PREVIEW (LOW RISK) | 91 238 KAUHI ST, KAPOLEI, HI 96707 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| SMITHKLINE BEECHAM CLINICAL LAB FREE PREVIEW (LOW RISK) | 4400 KALANIANAOLE HWY, HONOLULU, HI 96821 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| FIRESTONE STORE 6930 FREE PREVIEW (LOW RISK) | 75 5629 KUAKINI HWY UNIT A, KONA, HI 96740 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Hawaii (HI) Environmental Due Diligence & EPA Dataset
How many EPA-regulated environmental sites and high-risk facilities are in Hawaii?
Public U.S. EPA records track 9,918 regulated facilities across Hawaii. Of those, 109 (1.1%) are classified in the High-Risk tier due to formal enforcement actions, penalties, or toxic chemical releases, and 187 (1.9%) have active non-compliance quarters.
Which counties and ZIP codes in Hawaii have the highest concentration of EPA-regulated sites?
In Hawaii, the highest regulated facility volumes are concentrated in Honolulu County (4,471 sites), Hawaii County (1,156 sites), Maui County (949 sites), Honolulu County (798 sites), with key high-risk postal sectors including ZIP 96766 (Lihue, 12 high-risk), ZIP 96707 (Kapolei, 11 high-risk), ZIP 96720 (Hilo, 9 high-risk), ZIP 96740 (Kona, 9 high-risk).
How many drinking water systems (SDWIS), Clean Water permits, and FEMA disaster declarations are recorded in Hawaii?
Statewide in Hawaii, federal registries track 206 Safe Drinking Water (SDWIS) facilities, 6,692 Clean Water Act NPDES permits, and 2,700 impaired water body (303d) dischargers, alongside 19 historical FEMA disaster declarations.
What is the EPA Radon Zone and USDA Soil Foundation Risk for properties in Hawaii?
Regional geologic screening places Hawaii in EPA Zone 3 — Low Potential (< 2.0 pCi/L) with USDA regional soil shrink-swell rated LOW. Run a street address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.