Navajo County, Arizona
28 ZIP codes · Avg score 68/100 · Grade C · Updated
ZipCheckup grade for Navajo County: C.
A mixed picture - some signals here are worth your attention.
Recent monitoring in Navajo County's 28 ZIP codes shows middle-tier safety - some systems are clean; others have logged EPA violations.
How Navajo County Compares
How Navajo County Compares
Navajo County scores 2 points above the Arizona state average (66/100) and 5 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Navajo County, Arizona
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.8 (asthma 13.6%, diabetes 15.1%)
Estimated additional annual cost per homeowner: $2,451, driven primarily by wildfire
46.8% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Navajo County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 14 violations. Past 5 years: 44 total (44 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,451
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
56,380 housing units in Navajo County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Navajo County
Remediation costs are relatively manageable for most homeowners in Navajo County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Navajo County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Navajo County
8 community water systems serving Navajo County.
- C
- C
- C
- B
- C
Show all 8 water systems
- B
- C
19 total water systems serve Navajo County.
Systems with the most violations in Navajo County
5 water systems with recorded EPA violations.
- C
- C
- C
- C
- C
All ZIP Codes in Navajo County
28 ZIP codes tracked in Navajo County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 86025 | Holbrook | 71 | B | 27 (1 health) | $145K |
| 2 | 85933 | Overgaard | 69 | C | 29 (4 health) | $308K |
| 3 | 85901 | Show Low | 67 | C | 171 (4 health) | $256K |
| 4 | 85929 | Lakeside | 67 | C | 86 (4 health) | $250K |
| 5 | 85935 | Pinetop | 67 | C | 119 (4 health) | $381K |
| 6 | 85937 | Snowflake | 67 | C | 59 | $259K |
| 7 | 85902 | Show Low | — | — | — | |
| 8 | 85911 | Cibecue | — | — | $53K | |
| 9 | 85912 | White Mountain Lake | — | — | 96 (3 health) | $154K |
| 10 | 85923 | Clay Springs | — | — | $178K | |
| 11 | 85926 | Fort Apache | — | — | $62K | |
| 12 | 85928 | Heber | — | — | 33 (3 health) | $384K |
| 13 | 85934 | Pinedale | — | — | 37 (1 health) | $317K |
| 14 | 85939 | Taylor | — | — | 59 | $291K |
| 15 | 85941 | Whiteriver | — | — | $84K | |
| 16 | 85942 | Woodruff | — | — | — | |
| 17 | 86029 | Sun Valley | — | — | 18 (1 health) | — |
| 18 | 86030 | Hotevilla | — | — | $126K | |
| 19 | 86031 | Indian Wells | — | — | $72K | |
| 20 | 86032 | Joseph City | — | — | $173K | |
| 21 | 86033 | Kayenta | — | — | $38K | |
| 22 | 86034 | Keams Canyon | — | — | $74K | |
| 23 | 86039 | Kykotsmovi Village | — | — | $114K | |
| 24 | 86042 | Polacca | — | — | $61K | |
| 25 | 86043 | Second Mesa | — | — | $77K | |
| 26 | 86047 | Winslow | — | — | 16 | $114K |
| 27 | 86054 | Shonto | — | — | $74K | |
| 28 | 86510 | Pinon | — | — | $104K |
Recommended Buyer Guides for Navajo County
Designed to find the guide that fits the county, not the other way around - the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Water Filters for PFAS — PFAS detected in 3 ZIP codes
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Navajo County, Arizona
Overview
Navajo County in Arizona covers 28 tracked ZIP records with an average Home Safety Score of C (68/100) across 6 scored records.
12 of 12 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 12 health-based violations appear in the available health breakdown.
← Back to Arizona Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.