Prescott Valley, AZ: 21 Violations — 78/100 (2026)
3 ZIP codes · 7 water systems · Updated 2026-06-03
How does Prescott Valley tap water hold up under EPA scrutiny? Above average for AZ — documented violations are uncommon and the safety grade reflects a clean overall record.
How Prescott Valley Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Prescott Valley Residents
- Your city's water systems recorded 21 violations in the past 5 years.
- Average lead level: 0.0008 mg/L.
- Homes built before 1986: 15% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 13.61 — above typical levels.
Prescott Valley's Water Providers
Prescott Valley, AZ draws its residential water from 3 separate providers among the 7 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
Overview
We track water quality and home safety data for 3 ZIP codes in Prescott Valley, Arizona (population ~49,288), covering 7 community water systems serving approximately 105,039 people region-wide.
3 of 3 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Prescott Valley: B (78/100)
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 Valley 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): 3 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 |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 12 | 3 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 4 | 3 |
| Total Organic Carbon | Disinfection Byproducts | 4 | 3 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 3 |
| Surface Water Treatment Rule | Treatment Technique | 4 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 86312 | B | 7 | 0 | Town of Prescott Valley |
| 86314 | B | 7 | 0 | Town of Prescott Valley |
| 86315 | B | 7 | 0 | City of Prescott |
All ZIP Codes in Prescott Valley
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.
Prescott Valley Community Health Snapshot
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
What's in Prescott Valley's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Prescott Valley Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Why does housing age matter for water safety? Homes built before 1986 may have lead-soldered copper plumbing joints — a practice banned that year. Prescott Valley's median build year of 1998 places much of the city's housing in the post-ban era, reducing that specific risk pathway for most residents.
Most homes in Prescott Valley were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Prescott Valley
Within the Prescott Valley market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Prescott Valley are relatively low compared to home values. The $533–$2,000 estimated range is a small fraction of median property value. Home values are 65% above the Arizona average.
Prescott Valley: Lead Risk & Vulnerable Populations
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.
Pre-rule stock in Prescott Valley accounts for 15% of the inventory — a modest fraction — and citywide samples land safely beneath the federal action mark.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Prescott Valley: Flood History & Water Damage Risk
Flood activity in Prescott Valley is neither negligible nor at the level of the highest-exposure areas in the NFIP dataset. The 18-claim record and 67% flood zone coverage suggest a community that has experienced recurrent events but has not faced the kind of sustained, severe exposure where water-supply contamination becomes a primary public health concern. It sits in a middle range where flood history merits inclusion in any complete local water quality picture.
Prescott Valley has a moderate flood history with 18 FEMA claims averaging $9,608 per payout. 67% 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>$1,200</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 Prescott Valley, AZ