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WaterSafeCheck

ZIP Code 86313 Water Quality Report

Prescott, AZ · Yavapai County County

Safety Score
F

Water Safety Grade

Failing — Serious compliance issues

Health Violations

20

Total Violations

49

Lead Risk

N/A

Contaminants

3

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Active Water Quality Issues Detected

EPA records show 23 unresolved violations. Contact City of Prescott for current status.

About Tap Water in ZIP Code 86313

Tap water in ZIP code 86313 (Prescott, AZ) has received a failing F grade (score: 27/100) based on EPA compliance data. City of Prescott has a significant history of water quality violations. Residents are strongly encouraged to use a certified water filter and contact their local water authority for current advisories.

Water System

City of Prescott

EPA ID: AZ0413045

Water Source

Ground Water

Population Served

42,217 residents

County

Yavapai County County, Arizona

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Lead Levels in ZIP 86313

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Level: 12.0 ppb — Approaching Action Level

The 90th percentile lead level in 86313 is 12.0 ppb, approaching the EPA action level of 15 ppb. When a water system's 90th percentile exceeds this threshold, the utility is required to take corrective action including public notification and infrastructure upgrades. Residents — especially those with children or in homes built before 1986 — should use a certified lead-reducing filter (NSF/ANSI 53 or 58) for drinking and cooking water.
Lead Level (90th percentile)
12.00 ppb (0.012 mg/L)
Lead Exposure Risk Rating
Unknown
Note: Lead levels above are the 90th percentile from EPA monitoring — meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
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Violation History

Past 5 years — EPA SDWIS data

City of Prescott has recorded 20 health-based violations in the past 5 years — significantly above the national average. This volume of violations indicates serious and recurring compliance issues. Independent water testing and in-home filtration are strongly recommended. 23 violations are currently unresolved — meaning the issue has not yet been formally corrected in EPA records. This is a serious concern that residents should follow up on with their water utility.

Total Violations (5 yr)
49
Health-Based Violations
20
Unresolved Violations
23
Boil Water Advisories
0
Compliance Risk
Critical

Regulatory compliance risk is rated Critical — the highest risk category. City of Prescott has an extensive history of unresolved violations and enforcement actions. Independent water testing is highly recommended.

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Contaminants Detected

Contaminants with health-based violations on record

EPA records identify 3 contaminants associated with health-based violations in ZIP code 86313: Lead, Stage 2 DBP Rule, Contaminant 0700. These contaminants exceeded the Maximum Contaminant Levels (MCLs) established by the EPA under the Safe Drinking Water Act at some point in the 5-year monitoring period. The presence of these violations does not necessarily mean water is currently unsafe — water systems are often required to increase monitoring and treatment when violations occur. Review the annual Consumer Confidence Report for the most current status.

LeadStage 2 DBP RuleContaminant 0700

⚖ Enforcement Actions

10 enforcement actions have been issued against City of Prescott — a high number that reflects sustained compliance struggles. Enforcement actions escalate from administrative orders to financial penalties when utilities repeatedly fail to meet safe drinking water standards.
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Water Source & Environmental Factors

Ground Water

This system draws water from underground aquifers. Groundwater is naturally filtered through soil and rock, but can still contain naturally occurring minerals like arsenic, radium, or nitrates.

Water Source Type
Ground Water
EPA Radon Zone

Moderate potential

Zone 2

EPA Radon Zone 2 — moderate radon potential. The EPA recommends testing your home regardless of zone designation.

🛡 What Should You Do? — ZIP 86313 Recommendations

  • 🚨 Install a certified NSF/ANSI 53 or 58 (reverse osmosis) filter immediately for drinking and cooking
  • 🚨 Do not give unfiltered water to children, pregnant women, or immunocompromised individuals
  • 🚨 Contact City of Prescott to request the current violation status and corrective action plan
  • 🚨 Report concerns to your state environmental agency or call the EPA hotline: 1-800-426-4791
  • 🚨 Consider having your home's tap water independently tested by a certified lab

Frequently Asked Questions — ZIP 86313 Water Quality

Is tap water safe to drink in ZIP code 86313?+
Tap water in 86313 has a below-average water quality grade of F. While it is treated, there have been notable compliance issues. We strongly recommend using a certified NSF/ANSI 53 water filter for drinking and cooking, especially for vulnerable populations.
What is the lead level in 86313 tap water?+
The 90th percentile lead level in 86313 is 12.0 ppb (parts per billion). The EPA action level is 15 ppb. This is below the action level, but some health experts recommend a lead filter for families with young children.
Who provides tap water to 86313?+
Tap water in ZIP code 86313 is provided by City of Prescott (EPA ID: AZ0413045). This system serves approximately 42,217 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 86313?+
ZIP code 86313 is served by ground water. Groundwater systems draw from underground aquifers. While naturally filtered, groundwater can still contain naturally occurring contaminants such as arsenic, radium, or nitrates at elevated levels in some regions.
Does 86313 have any active water quality violations?+
Yes — there are currently 23 unresolved violations on record for this water system. Unresolved violations indicate issues that have not yet been formally corrected in EPA tracking systems. Contact City of Prescott for the latest update.
How do I get a copy of my water quality report for 86313?+
Your water utility — City of Prescott — is required by law to send you an annual Consumer Confidence Report (CCR) by July 1 each year. You can also request it directly from the utility or find it online by searching "City of Prescott Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 86313?+
The right filter depends on what contaminants are present. For lead, look for a filter certified to NSF/ANSI Standard 53. For chlorine byproducts (like THMs), NSF/ANSI 42 filters work well. For a broad range of contaminants including PFAS, look for NSF/ANSI 58 (reverse osmosis) systems. For ZIP code 86313, with detected contaminants including Lead and Stage 2 DBP Rule, a multi-stage filter or reverse osmosis system is recommended.
Is 86313 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Given the detected lead level of 12.0 ppb in 86313, we recommend using a certified NSF/ANSI 53 water filter or certified bottled water for preparing infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 86313 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by City of Prescott. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →