COUNTY REPORT AZ

Navajo County, Arizona

28 ZIP codes · Avg score 69/100 · Grade C

ZipCheckup grade for Navajo County: C.

A mixed picture - some signals here are worth your attention.

Navajo County receives a C, the middle grade on the A-F scale, with 28 ZIP codes tracked.

How Navajo County Compares

Navajo County69/100
Arizona avg66/100
National avg73/100

How Navajo County Compares

C
County Grade
69/100
Avg Safety Score
28
ZIP Codes
19
Water Systems

Navajo County scores 3 points above the Arizona state average (66/100) and 4 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

C
County Grade
69
Avg Safety Score
28
ZIP Codes
Best ZIP: 86047 (73/100)
Lowest ZIP: 85937 (67/100)
$126K
Median Home Value
$611
Avg Remediation (0.48% of home value)

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.

A B C D F

Key Risk Factors

Health risk index: 15.8 (asthma 13.6%, diabetes 15.1%)

Modeled additional annual cost estimate per homeowner: $2,307, largest modeled factor: Wildfire

32% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 13.6% (national: 8.9%)
Diabetes 15.1% (national: 10.5%)
Obesity 37.6% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1984
Median Build Year
32%
Pre-1980 Housing
38/100
Infrastructure Stress Indicator
32%
ZIPs with High Infrastructure Stress
Moderate
Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $2,307

Wildfire $2,014/yr
Flood $480/yr
Energy Code Gap $90/yr

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

Pre-1940 3%
1940–1959 4%
1960–1979 25%
1980–1999 38%
2000+ 29%

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

$126K
Median Home Value
$611
Est. Remediation Cost
0.5%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Navajo County can be compared with the median property value; actual costs vary by property.

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

Asthma 13.6% (US avg: 8.9%)
Diabetes 15.1% (US avg: 11%)
Obesity 37.6% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Navajo County ZIP codes

8 community water systems mapped to Navajo County ZIP codes; EPA may list more systems serving the county.

Show all 8 water systems

19 water systems mapped to Navajo County ZIP codes in our data; EPA may list more systems serving the county.

Systems with the most violations in Navajo County

5 water systems with violations in EPA records.

All ZIP Codes in Navajo County

28 ZIP codes tracked in Navajo County.

# ZIP Code City Safety Score Grade Violations Home Value
1 86047 Winslow 73 B 16 $114K
2 86025 Holbrook 71 B 27 (1 health) $145K
3 85933 Overgaard 69 C 29 (4 health) $308K
4 85901 Show Low 67 C 171 (4 health) $256K
5 85929 Lakeside 67 C 86 (4 health) $250K
6 85935 Pinetop 67 C 119 (4 health) $381K
7 85937 Snowflake 67 C 59 $259K
8 85902 Show Low — — —
9 85911 Cibecue — — $53K
10 85912 White Mountain Lake — — 96 (3 health) $154K
11 85923 Clay Springs — — $178K
12 85926 Fort Apache — — $62K
13 85928 Heber — — 33 (3 health) $384K
14 85934 Pinedale — — 37 (1 health) $317K
15 85939 Taylor — — 59 $291K
16 85941 Whiteriver — — $84K
17 85942 Woodruff — — —
18 86029 Sun Valley — — 18 (1 health) —
19 86030 Hotevilla — — $126K
20 86031 Indian Wells — — $72K
21 86032 Joseph City — — $173K
22 86033 Kayenta — — $38K
23 86034 Keams Canyon — — $74K
24 86039 Kykotsmovi Village — — $114K
25 86042 Polacca — — $61K
26 86043 Second Mesa — — $77K
27 86054 Shonto — — $74K
28 86510 Pinon — — $104K

Recommended Buyer Guides for Navajo County

Nothing on this list means a problem exists in your own home: the matches are drawn from county- and ZIP-level records, so a guide shows up because of an area signal, and only testing at your tap describes a specific household.

Overview

Navajo County in Arizona covers 28 tracked ZIP records with an average Home Safety Score of C (69/100) across 7 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

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Navajo County?
Navajo County receives a grade of C. Some ZIP codes have recorded violations and residents in affected areas may want to test their water.
How many water systems serve Navajo County?
We map 19 public water systems to 28 ZIP codes in our data for Navajo County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Navajo County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Navajo County is wildfire. Across all modeled risk factors, the estimated average additional annual cost is $2,307 per homeowner; actual costs vary by home.
How old are homes in Navajo County?
The median home build year in Navajo County is 1984. 32% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Navajo County compare to Arizona?
Navajo County has an average Home Safety Score of 69/100 under model 4.0.0, which is at or above the Arizona state average of 66/100.

How to cite this page

APA ZipCheckup. (2026). Navajo County, AZ: HSS 69/100; PFAS Found in Water. https://zipcheckup.com/county/arizona/navajo/
BibTeX
@misc{zipcheckup-county-arizona-navajo,
  author = {{ZipCheckup}},
  title  = {{Navajo County, AZ: HSS 69/100; PFAS Found in Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/arizona/navajo/}
}

Page version: October 2026.

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