Coconino County, Arizona
27 ZIP codes · Avg score 67/100 · Grade C · Updated
ZipCheckup grade for Coconino County: C.
A mixed picture - some signals here are worth your attention.
Safe water is the norm for most of Coconino County's 27 ZIP codes - but a notable subset have documented violations that push the grade to the middle tier.
How Coconino County Compares
How Coconino County Compares
Coconino County scores 1 points above the Arizona state average (66/100) and 6 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: Coconino County, Arizona
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.5 (asthma 11.7%, diabetes 9.3%)
Estimated additional annual cost per homeowner: $2,596, driven primarily by wildfire
43.6% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Coconino County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 16 violations. Past 5 years: 36 total (36 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: $2,596
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
74,352 housing units in Coconino 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 Coconino County
Remediation costs are relatively manageable for most homeowners in Coconino 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 Coconino County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Coconino County
8 community water systems serving Coconino County.
- C
- D
- C
- B
- C
Show all 8 water systems
- C
- D
13 total water systems serve Coconino County.
Systems with the most violations in Coconino County
5 water systems with recorded EPA violations.
- C
- D
- C
- C
All ZIP Codes in Coconino County
27 ZIP codes tracked in Coconino County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 86040 | Page | 78 | B | 7 (2 health) | $125K |
| 2 | 86001 | Flagstaff | 67 | C | 88 (3 health) | $571K |
| 3 | 86004 | Flagstaff | 67 | C | 67 | $464K |
| 4 | 86005 | Flagstaff | 67 | C | 94 (3 health) | $556K |
| 5 | 86011 | Flagstaff | 67 | C | 65 | — |
| 6 | 86336 | Sedona | 53 | D | 24 (16 health) | $705K |
| 7 | 85931 | Forest Lakes | — | — | $413K | |
| 8 | 86002 | Flagstaff | — | — | — | |
| 9 | 86003 | Flagstaff | — | — | $163K | |
| 10 | 86015 | Bellemont | — | — | $457K | |
| 11 | 86016 | Gray Mountain | — | — | $31K | |
| 12 | 86017 | Munds Park | — | — | $397K | |
| 13 | 86018 | Parks | — | — | $559K | |
| 14 | 86020 | Cameron | — | — | $60K | |
| 15 | 86022 | Fredonia | — | — | $224K | |
| 16 | 86023 | Grand Canyon | — | — | $18K ⚠ | |
| 17 | 86024 | Happy Jack | — | — | $427K | |
| 18 | 86035 | Leupp | — | — | $60K | |
| 19 | 86036 | Marble Canyon | — | — | $58K | |
| 20 | 86038 | Mormon Lake | — | — | $268K | |
| 21 | 86044 | Tonalea | — | — | $63K | |
| 22 | 86045 | Tuba City | — | — | $68K | |
| 23 | 86046 | Williams | — | — | 27 (6 health) | $368K |
| 24 | 86052 | North Rim | — | — | — | |
| 25 | 86053 | Kaibeto | — | — | $49K | |
| 26 | 86339 | Sedona | — | — | — | |
| 27 | 86435 | Supai | — | — | — |
Recommended Buyer Guides for Coconino County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance - guides surface only when county data warrants them.
- Best Water Filters for PFAS — PFAS detected in 4 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 Coconino County, Arizona
Overview
Coconino County in Arizona covers 27 tracked ZIP records with an average Home Safety Score of C (67/100) across 6 scored records.
7 of 7 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 29 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.