Maui County, Hawaii — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Maui County, HI?
In Maui County, Hawaii, public U.S. EPA records track 949 regulated facilities (#3 of 9 in Hawaii), including 7 (0.7%) High-Risk sites and $2,010,582 in federal penalties. Countywide due diligence also covers 27 Safe Drinking Water (SDWIS) facilities, 743 Clean Water NPDES permits, 11 FEMA Federal Disaster Declarations (6 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
Maui 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📊 Maui County, HI Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Maui County
ZIP Codes in Maui County
Top EPA Regulated Facilities in Maui 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 • PUUNENE, HI (ZIP 96784 Sector) | HIGH (70/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • KIHEI, HI (ZIP 96753 Sector) | MODERATE (54/100) | Violation Identified (11 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • KIHEI, HI (ZIP 96753 Sector) | MODERATE (46/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • KALAUPAPA, HI (ZIP 96742 Sector) | MODERATE (45/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • KIHEI, HI (ZIP 96753 Sector) | MODERATE (43/100) | Violation Identified (1 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WAILUKU, HI (ZIP 96793 Sector) | MODERATE (43/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • LANAI CITY, HI (ZIP 96763 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HONOLULU, HI (ZIP 96813 Sector) | MODERATE (39/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| HC&S - PUUNENE FREE PREVIEW (LOW RISK) | 1 HANSEN RD, PUUNENE, HI 96784 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| UNIVERSITY OF HAWAII, MAUI COMMUNITY COLLEGE FREE PREVIEW (LOW RISK) | 310 KAAHUMANU AVE, KAHULUI, HI 96732 | LOW (23/100) | No Violation Identified (0 qtrs NC) | $0 |
| MONSANTO MOKULELE FARM FACILITIES FREE PREVIEW (LOW RISK) | 3555 MOKULELE HWY, KIHEI, HI 96753 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| RITZ CARLTON KAPALUA FREE PREVIEW (LOW RISK) | 1 RITZ CARLTON DR, LAHAINA, HI 96761 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Maui County, Hawaii Environmental Due Diligence
How many EPA-regulated environmental sites are in Maui County, Hawaii?
Public U.S. EPA records track 949 regulated facilities in Maui County, Hawaii (ranking #3 of 9 jurisdictions in HI). Of those, 7 (0.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 14 (1.5%) have active non-compliance quarters.
Which ZIP codes and cities in Maui County have the highest regulated facility density?
Within Maui County, the highest concentrations of EPA-tracked facilities are located in ZIP 96732 (Kahului, 257 sites), ZIP 96793 (Wailuku, 186 sites), ZIP 96761 (Lahaina, 166 sites), spanning municipal corridors including Kahului (263 sites), Wailuku (182 sites), Lahaina (162 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Maui County?
Across Maui County, 354 facilities (37.3% 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 Maui County, HI?
Geologic indoor air screening places Maui 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 Maui County, HI?
Federal records track 27 Safe Drinking Water (SDWIS) facilities, 743 Clean Water Act NPDES permits, and 325 impaired water dischargers in Maui County, alongside 11 historical FEMA federal disaster declarations (6 flood/storm events).
Does Maui County, HI have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Maui 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.