Greenlee County, Arizona
3 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-06-03
Greenlee County's water quality grade reflects a middle-ground assessment — its 3 ZIP codes range from fully compliant to violation-flagged.
How Greenlee County Compares
How Greenlee County Compares
Greenlee County scores 1 points below the Arizona state average (64/100) and 5 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 11.2 (asthma 10.1%, diabetes 10.6%)
Estimated additional annual cost per homeowner: $1,440, driven primarily by flood
Infrastructure: 0.45% avg pipe failure probability, 100% of ZIPs at high risk
60.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Greenlee County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 7 violations. Past 5 years: 22 total (22 health-based).
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: $1,440
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,342 housing units in Greenlee 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 Greenlee County
Remediation costs are relatively manageable for most homeowners in Greenlee 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 Greenlee 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 Greenlee County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Morenci Water Elec Company Clifton | 1,678 | 73 |
| 2 | Morenci Water Elec Company Main | 4,108 | 73 |
| 3 | Cs Verde Lee Water Company | 604 | 44 |
| 4 | Cs Loma Linda Water Company | 351 | 44 |
| 5 | Duncan Town of | 605 | 42 |
7 total water systems serve Greenlee County.
All ZIP Codes in Greenlee County
3 ZIP codes tracked in Greenlee County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 85534 | Duncan | 74 | B | 42 (4 health) | $158K |
| 2 | 85540 | Morenci | 67 | C | 29 (4 health) | — |
| 3 | 85533 | Clifton | 49 | D | 44 (9 health) | $86K |
Recommended Buyer Guides for Greenlee County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Lead Paint Test Kits — 60.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Overview
Greenlee County in Arizona covers 3 ZIP codes with an average Home Safety Score of C (63/100).
3 of 3 ZIP codes have recorded EPA violations. 17 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.