Navajo County, Arizona
21 ZIP codes · Avg score 68/100 · Grade C · Updated 2026-06-04
Recent monitoring in Navajo County's 21 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 4 points above the Arizona state average (64/100) and 0 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
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 15.2%)
Estimated additional annual cost per homeowner: $2,572, driven primarily by wildfire
Infrastructure: 0.329% avg pipe failure probability, 14% of ZIPs at high risk
44.3% 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: 53 total (53 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
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,572
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
43,052 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 with Most Violations
Top 5 systems in Navajo County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Snowflake Town of | 5,590 | 168 |
| 2 | White Mountain Water Company | 475 | 117 |
| 3 | Town of Taylor | 4,190 | 110 |
| 4 | City of Show Low | 17,139 | 95 |
| 5 | Arizona Water Company - Lakeside | 12,191 | 87 |
33 total water systems serve Navajo County.
All ZIP Codes in Navajo County
21 ZIP codes tracked in Navajo County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 85934 | Pinedale | 82 | B | 8 (1 health) | $317K |
| 2 | 85923 | Clay Springs | 81 | B | 2 | $178K |
| 3 | 85942 | Woodruff | 81 | B | 16 (2 health) | — |
| 4 | 85901 | Show Low | 78 | B | 17 (2 health) | $256K |
| 5 | 85902 | Show Low | 77 | B | 17 (2 health) | — |
| 6 | 85939 | Taylor | 77 | B | 83 (1 health) | $291K |
| 7 | 86025 | Holbrook | 76 | B | 56 (4 health) | $145K |
| 8 | 85929 | Lakeside | 75 | B | 14 (1 health) | $250K |
| 9 | 86032 | Joseph City | 75 | B | 7 | $173K |
| 10 | 85928 | Heber | 73 | B | 19 (4 health) | $384K |
| 11 | 85937 | Snowflake | 71 | B | 10 | $259K |
| 12 | 86047 | Winslow | 70 | B | 19 (3 health) | $114K |
| 13 | 86029 | Sun Valley | 69 | C | 23 (3 health) | — |
| 14 | 85935 | Pinetop | 65 | C | 39 (1 health) | $381K |
| 15 | 85911 | Cibecue | 53 | D | 0 | $53K |
| 16 | 85912 | White Mountain Lake | 53 | D | 0 | $154K |
| 17 | 85926 | Fort Apache | 53 | D | 0 | $62K |
| 18 | 85930 | Mcnary | 53 | D | 0 | — |
| 19 | 85941 | Whiteriver | 53 | D | 0 | $84K |
| 20 | 86031 | Indian Wells | 53 | D | 0 | $72K |
| 21 | 86034 | Keams Canyon | 53 | D | 0 | $74K |
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 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 21 ZIP codes with an average Home Safety Score of C (68/100).
14 of 21 ZIP codes have recorded EPA violations. 24 health-based violations have been documented.
← Back to Arizona water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.