Willcox, AZ: 2 Health Violations — 80/100 (2026)
2 ZIP codes · 2 water systems · Updated 2026-06-03
In current AZ EPA data, Willcox's tap water sits in the high-safety tier.
How Willcox Compares
Data: EPA SDWIS Last verified: 2026-06-03
Willcox Water: The Quick Version
- Your city's water systems recorded 42 violations in the past 5 years.
- Average lead level: 0.0008 mg/L.
- Estimated remediation: $1,900 per household.
- CDC health risk index: 13.63 — above typical levels.
Water Systems Serving Willcox
2 independent water providers serve Willcox, AZ — 2 systems appear in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Willcox, Arizona, covering 2 community water systems serving approximately 8,524 people.
2 of 2 ZIP codes (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Willcox: B (80/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Willcox water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0008 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 15 | 2 |
| Consumer Confidence Report Rule | Reporting | 15 | 2 |
| Revised Total Coliform Rule | Microbiological | 12 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 2 |
| Stage 1 DBP Rule | Treatment Technique | 6 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 85643 | B | 21 | 1 | City of Willcox |
| 85644 | B | 21 | 1 | City of Willcox |
All ZIP Codes in Willcox
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Willcox
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Willcox
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Willcox: Remediation Cost in Perspective
Within the Willcox property market, documented remediation claims a moderate slice of typical equity — real but budgetable.
Remediation costs are moderate relative to home values in Willcox. The estimated $950–$3,200 range is manageable for most homeowners but still worth budgeting for. Home values are 47% below the Arizona average.
Protecting Children from Lead in Willcox
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Willcox appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Willcox
Within the NFIP's national dataset, Willcox falls in moderate-exposure territory — 27 documented incidents spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Willcox has a moderate flood history with 27 FEMA claims averaging $2,945 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,900</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Willcox, AZ