Navajo County, Arizona — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Navajo County, AZ?
In Navajo County, Arizona, public U.S. EPA records track 234 regulated facilities (#17 of 36 in Arizona), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 8 Safe Drinking Water (SDWIS) facilities, 216 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Navajo County, AZ 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Navajo County, AZ Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Navajo County
Top EPA Regulated Facilities in Navajo County, AZ
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 Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • OVERGAARD, AZ (ZIP 85928 Sector) | MODERATE (37/100) | Violation Identified (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • TAYLOR, AZ (ZIP 85939 Sector) | MODERATE (35/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WHITERIVER, AZ (ZIP 85941 Sector) | MODERATE (34/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • UNKNOWN, AZ (ZIP 85009 Sector) | MODERATE (33/100) | Violation Identified (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • KAYENTA, AZ (ZIP 86033 Sector) | MODERATE (31/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • WHITERIVER, AZ (ZIP 85941 Sector) | MODERATE (30/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • TAYLOR, AZ (ZIP 85939 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • TAYLOR, AZ (ZIP 85939 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| POST OFFICE CANYON BRIDGE F0109 FREE PREVIEW (LOW RISK) | STATE ROUTE 73, WHITE RIVER, AZ 85941 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| TRANSWESTERN PIPELINE COMPANY LUEPP COMP FREE PREVIEW (LOW RISK) | REMOTE 7 MILES OF LUEPP, WINSLOW, AZ 86047 | LOW (15/100) | No Violation Identified (0 qtrs NC) | $0 |
| NA-18-T76/XS4 DENNEHOTSO-WHITE MESA VALLEY EXTENSION FREE PREVIEW (LOW RISK) | KAYENTA NECA/IHS YARD, KAYENTA, AZ 86033 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| WHITERIVER USD - CANYON DAY TEACHER HOUSING FREE PREVIEW (LOW RISK) | 4621 S. 9TH STREET, WHITERIVER, AZ 85941 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Navajo County, Arizona Environmental Due Diligence
How many EPA-regulated environmental sites are in Navajo County County, Arizona?
Public U.S. EPA records track 234 regulated facilities in Navajo County County, Arizona (ranking #17 of 36 jurisdictions in AZ). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 7 (3.0%) have active non-compliance quarters.
Which ZIP codes and cities in Navajo County County have the highest regulated facility density?
Within Navajo County County, the highest concentrations of EPA-tracked facilities are located in ZIP 86033 (Kayenta, 97 sites), ZIP 85901 (Show Low, 65 sites), ZIP 85941 (White River, 33 sites), spanning municipal corridors including Kayenta (79 sites), Dilkon (54 sites), Whiteriver (30 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Navajo County County?
Across Navajo County County, 2 facilities (0.9% 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 Navajo County County, AZ?
Geologic indoor air screening places Navajo County County in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Counties in EPA Radon Zone 2 have a predicted average indoor radon level between 2.0 and 4.0 pCi/L. Testing basement or ground-floor living areas is recommended during home inspection.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Navajo County County, AZ?
Federal records track 8 Safe Drinking Water (SDWIS) facilities, 216 Clean Water Act NPDES permits, and 1 impaired water dischargers in Navajo County County, alongside 1 historical FEMA federal disaster declarations (1 flood/storm events).
Does Navajo County, AZ have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Navajo County indicates a MODERATE 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.