Prescott, AZ: 120 Health Violations — 32/100 (2026)
6 ZIP codes · 6 water systems · Updated 2026-06-03
In recent EPA cycles, Prescott shows a persistent below-average water quality pattern within AZ — documented violations span multiple service areas and have appeared consistently across reporting periods.
How Prescott Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Prescott, AZ
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Prescott.
Prescott Water: The Quick Version
- Your city's water systems recorded 294 violations in the past 5 years.
- Average lead level: 0.012 mg/L.
- Estimated remediation: $2,000 per household.
- CDC health risk index: 13.61 — above typical levels.
Water Systems Serving Prescott
Across Prescott, AZ, residential water comes from 3 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 6 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 6 ZIP codes in Prescott, Arizona (population ~65,412), covering 6 community water systems serving approximately 105,504 people region-wide.
6 of 6 ZIP codes (100%) have recorded EPA violations. 120 health-based violations documented.
Home Safety Score
Average Home Safety Score for Prescott: F (32/100)
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
Prescott water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0120 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): 6 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 |
|---|---|---|---|
| Lead | Inorganic | 133 | 6 |
| Revised Total Coliform Rule | Microbiological | 63 | 6 |
| Lead and Copper Rule | Treatment Technique | 35 | 6 |
| Barium | Inorganic | 28 | 6 |
| Surface Water Treatment Rule | Treatment Technique | 21 | 6 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 86301 | F | 49 | 20 | City of Prescott |
| 86302 | F | 49 | 20 | City of Prescott |
| 86303 | F | 49 | 20 | City of Prescott |
| 86304 | F | 49 | 20 | City of Prescott |
| 86305 | F | 49 | 20 | City of Prescott |
| 86313 | F | 49 | 20 | City of Prescott |
All ZIP Codes in Prescott
- 86301 [F] — 49 violations ⚠
- 86302 [F] — 49 violations ⚠
- 86303 [F] — 49 violations ⚠
- 86304 [F] — 49 violations ⚠
- 86305 [F] — 49 violations ⚠
- 86313 [F] — 49 violations ⚠
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 Prescott
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 Prescott
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Prescott: Remediation Cost in Perspective
Because property values in Prescott comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Prescott are relatively low compared to home values. The $967–$3,733 estimated range is a small fraction of median property value. Home values are 64% above the Arizona average.
Protecting Children from Lead in Prescott
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 Prescott 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 Prescott
Across the NFIP's long tracking period, Prescott shows 65 claims and 50% of ZIP codes within FEMA-designated flood zones — figures that place it in moderate flood exposure territory. At this level, the water-quality implications of flooding — contaminated wells, stressed treatment intake, distribution backflow — move from theoretical edge cases to genuine periodic risks, particularly during higher-severity events.
Prescott has a moderate flood history with 65 FEMA claims averaging $6,498 per payout. 50% 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>$2,000</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.
What You Can Do in Prescott
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Lead can reduce the most common contaminant found in Prescott's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Prescott, AZ