ZIP 86504 (Fort Defiance, AZ) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 86504 in Fort Defiance, Arizona (Apache County) has 105 EPA-tracked facilities, including 1 High-Risk sites (1.0%), 9 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 86504 are screened across 2 historical Apache County FEMA disasters, USDA Soil Foundation Shrink-Swell (MODERATE signal), Tap Water & Watershed Permits (86), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
ZIP 86504 (Fort Defiance, AZ) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 86504 (Fort Defiance, AZ) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 86504 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 1 High-Risk and 9 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 86504 (Fort Defiance, 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 Score (0–100) | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • FORT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (42/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • FT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • FT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • FT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • FORT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • FT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (36/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • FORT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (35/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • FT DEFIANCE, AZ (ZIP 86504 Sector) | MODERATE (35/100) | Violation Identified (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| USDOI BIA WATER MANAGEMENT BRANCH FREE PREVIEW (LOW RISK) | ROANHORSE DR RTE N112, FORT DEFIANCE, NN 86504 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| BIA BRANCH OF FACILITIES MGMT FREE PREVIEW (LOW RISK) | 1 PAOUOLTE DR BLDG 148, FORT DEFIANCE, AZ 86504 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| NAVAJO NATION FACILITIES MAINTENANCE DEPARTMENT FREE PREVIEW (LOW RISK) | ROUTE 12 NORTH BLDG, FORT DEFIANCE, AZ 86504 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| NAVAJO TRIBAL UTILITY AUTHORITY NTUA LAB FREE PREVIEW (LOW RISK) | INDIAN RTE 12, FORT DEFIANCE, AZ 86504 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 86504 (Fort Defiance, AZ) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 86504 (Fort Defiance, AZ)?
ZIP code 86504 (Fort Defiance, AZ) contains 105 EPA-tracked facilities, of which 1 (1.0%) are classified in the High-Risk tier, 9 (8.6%) have active compliance violations, and 15 (14.3%) handle RCRA hazardous waste.
How does ZIP 86504 compare to Apache County and Arizona averages?
In ZIP 86504, 1.0% of regulated sites are rated High Risk, compared to 0.3% across Apache County and 0.9% statewide in Arizona.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 86504?
Geologic screening places ZIP 86504 in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Property buyers should screen a 0.25-mile immediate buffer for vapor-intrusion sources and a 1.0-mile radius for CERCLA/RCRA sites.
Is ZIP 86504 (Fort Defiance, AZ) in a FEMA flood zone and what is the flood disaster history?
Apache County has recorded 2 historical FEMA federal disaster declarations (1 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 86504 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 86504 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 86504 indicates a MODERATE shrink-swell risk signal. Within ZIP 86504, federal registries track 22 SDWIS drinking water facilities, 64 Clean Water NPDES permits, and 0 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.