Cochise County, Arizona
28 ZIP codes · Avg score 68/100 · Grade C · Updated
ZipCheckup grade for Cochise County: C.
A mixed picture - some signals here are worth your attention.
Tracking 28 ZIP codes in Cochise County reveals a mixed picture - tap water quality varies meaningfully by location.
How Cochise County Compares
How Cochise County Compares
Cochise 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: Cochise County, Arizona
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.6 (asthma 10.4%, diabetes 13.7%)
Estimated additional annual cost per homeowner: $1,754, driven primarily by wildfire
46.5% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Cochise County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 33 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
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: $1,754
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
59,527 housing units in Cochise 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 Cochise County
Remediation costs are relatively manageable for most homeowners in Cochise 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 Cochise County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Cochise County
8 community water systems serving Cochise County.
- C
- C
- B
- C
- C
- C
Show all 8 water systems
- B
- C
25 total water systems serve Cochise County.
Systems with the most violations in Cochise County
5 water systems with recorded EPA violations.
- C
- C
- B
- C
All ZIP Codes in Cochise County
28 ZIP codes tracked in Cochise County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 85643 | Willcox | 78 | B | 15 | $162K |
| 2 | 85607 | Douglas | 74 | B | 13 (3 health) | $134K |
| 3 | 85602 | Benson | 67 | C | 45 (17 health) | $196K |
| 4 | 85635 | Sierra Vista | 67 | C | 229 (10 health) | $218K |
| 5 | 85650 | Sierra Vista | 67 | C | 227 (8 health) | $306K |
| 6 | 85613 | Fort Huachuca | 64 | C | 6 (1 health) | — |
| 7 | 85603 | Bisbee | 58 | C | 10 (3 health) | $205K |
| 8 | 85605 | Bowie | — | — | $68K | |
| 9 | 85606 | Cochise | — | — | $234K | |
| 10 | 85608 | Douglas | — | — | — | |
| 11 | 85609 | Dragoon | — | — | 13 (1 health) | — |
| 12 | 85610 | Elfrida | — | — | $207K | |
| 13 | 85615 | Hereford | — | — | 223 (8 health) | $247K |
| 14 | 85616 | Huachuca City | — | — | 25 (1 health) | $158K |
| 15 | 85617 | Mc Neal | — | — | 4 (2 health) | $122K |
| 16 | 85620 | Naco | — | — | $74K | |
| 17 | 85625 | Pearce | — | — | $159K | |
| 18 | 85626 | Pirtleville | — | — | $91K | |
| 19 | 85627 | Pomerene | — | — | $161K | |
| 20 | 85630 | Saint David | — | — | 19 (2 health) | $149K |
| 21 | 85632 | San Simon | — | — | $120K | |
| 22 | 85636 | Sierra Vista | — | — | — | |
| 23 | 85638 | Tombstone | — | — | 4 (2 health) | $171K |
| 24 | 85644 | Willcox | — | — | — | |
| 25 | 85655 | Douglas | — | — | — | |
| 26 | 85670 | Fort Huachuca | — | — | — | |
| 27 | 85671 | Sierra Vista | — | — | — | |
| 28 | 86555 | Douglas | — | — | — |
Recommended Buyer Guides for Cochise County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- 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 Cochise County, Arizona
Overview
Cochise County in Arizona covers 28 tracked ZIP records with an average Home Safety Score of C (68/100) across 7 scored records.
13 of 13 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 33 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.