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 362 regulated facilities (#10 of 36 in Arizona), including 18 (5.0%) High-Risk sites and $6,301,678 in federal penalties. Countywide due diligence also covers 84 Safe Drinking Water (SDWIS) facilities, 268 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 05, 2026)Municipalities in Navajo County
ZIP Codes 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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • WHITERIVER, AZ (ZIP 85941 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • WHITERIVER, AZ (ZIP 85941 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • WHITERIVER, AZ (ZIP 85941 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • SHONGOPOVI, AZ (ZIP 86043 Sector) | HIGH (64/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • SUN VALLEY, AZ (ZIP 86029 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • LAKESIDE, AZ (ZIP 85929 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • KYKOTSMOVI VILLAGE, AZ (ZIP 86039 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • WOODRUFF, AZ (ZIP 85942 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| CAKE CHEVROLET FREE PREVIEW (LOW RISK) | 1200 E SECOND ST, WINSLOW, AZ 86047 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| SAFEWAY #1733 FREE PREVIEW (LOW RISK) | 900 W DEUCE OF CLUBS, SHOW LOW, AZ 85901 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| HOPI TECHNOLOGIES INC FREE PREVIEW (LOW RISK) | 410 E 2ND ST, WINSLOW, AZ 86047 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| WESTERN TECHNOLOGIES INC FREE PREVIEW (LOW RISK) | 727 S WOODLAND RD D, LAKESIDE, AZ 85929 | LOW (16/100) | 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, Arizona?
Public U.S. EPA records track 362 regulated facilities in Navajo County, Arizona (ranking #10 of 36 jurisdictions in AZ). Of those, 18 (5.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 34 (9.4%) have active non-compliance quarters.
Which ZIP codes and cities in Navajo County have the highest regulated facility density?
Within Navajo County, the highest concentrations of EPA-tracked facilities are located in ZIP 86047 (Winslow, 127 sites), ZIP 86025 (Holbrook, 48 sites), ZIP 86510 (Pinon, 39 sites), spanning municipal corridors including Show Low (68 sites), Winslow (55 sites), Holbrook (41 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Navajo County?
Across Navajo County, 193 facilities (53.3% 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 Navajo County, AZ?
Geologic indoor air screening places Navajo 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, AZ?
Federal records track 84 Safe Drinking Water (SDWIS) facilities, 268 Clean Water Act NPDES permits, and 2 impaired water dischargers in Navajo 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.