Skip to main content
WaterSafeCheck

ZIP Code 85172 Water Quality Report

Stanfield, AZ · Pinal County County

Safety Score
D

Water Safety Grade

Poor — Multiple violations recorded

Health Violations

26

Total Violations

55

Lead Risk

Moderate

Contaminants

4

⚠

Active Water Quality Issues Detected

EPA records show 22 unresolved violations. Contact Arizona Water Company - Pinal Valley for current status.

About Tap Water in ZIP Code 85172

Tap water in ZIP code 85172 (Stanfield, AZ) has received a D grade (score: 50/100) — below average for the nation. Arizona Water Company - Pinal Valley has recorded notable violations with EPA Safe Drinking Water Act regulations. Residents may want to consider additional filtration and review their annual Consumer Confidence Report.

Water System

Arizona Water Company - Pinal Valley

EPA ID: AZ0411009

Water Source

Ground Water

Population Served

134,432 residents

County

Pinal County County, Arizona

🧪

Lead Levels in ZIP 85172

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

Lead Level: 0.4 ppb — Very Low

The 90th percentile lead level in 85172 is 0.4 ppb, well below the EPA action level of 15 ppb. While this is a reassuring result, the EPA's public health goal for lead is actually zero — no amount of lead is considered completely safe, particularly for children under 6 and pregnant women. Running your tap for 30 seconds before use and using a certified NSF/ANSI 53 filter adds an extra layer of protection.

Lead exposure risk in 85172 is rated Moderate. EPA models estimate a 39% probability of lead exposure risk in this ZIP code based on housing age, infrastructure age, and water system data. This may reflect a mix of older and newer housing stock and infrastructure. Families with young children should test their home's water and consider a certified NSF/ANSI 53 water filter.

Lead Level (90th percentile)
0.40 ppb (0.0004 mg/L)
Lead Exposure Risk Rating
Moderate
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

39%
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.
📋

Violation History

Past 5 years — EPA SDWIS data

Arizona Water Company - Pinal Valley has recorded 26 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. 22 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)
55
Health-Based Violations
26
Unresolved Violations
22
Boil Water Advisories
0
Compliance Risk
Critical

Regulatory compliance risk is rated Critical — the highest risk category. Arizona Water Company - Pinal Valley has an extensive history of unresolved violations and enforcement actions. Independent water testing is highly recommended.

⚗️

Contaminants Detected

Contaminants with health-based violations on record

EPA records identify 4 contaminants associated with health-based violations in ZIP code 85172: Lead, Combined Radium, Barium, Stage 2 DBP Rule. 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.

LeadCombined RadiumBariumStage 2 DBP Rule

⚖ Enforcement Actions

10 enforcement actions have been issued against Arizona Water Company - Pinal Valley — 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.
🌊

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
Energy Burden

% of household income spent on energy — indicator of older infrastructure

1.79%

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

🛡 What Should You Do? — ZIP 85172 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 Arizona Water Company - Pinal Valley 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 85172 Water Quality

Is tap water safe to drink in ZIP code 85172?+
Tap water in 85172 has a below-average water quality grade of D. 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 85172 tap water?+
The 90th percentile lead level in 85172 is 0.4 ppb (parts per billion). The EPA action level is 15 ppb. This is a low level, well below the EPA action level of 15 ppb.
Who provides tap water to 85172?+
Tap water in ZIP code 85172 is provided by Arizona Water Company - Pinal Valley (EPA ID: AZ0411009). This system serves approximately 134,432 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 85172?+
ZIP code 85172 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 85172 have any active water quality violations?+
Yes — there are currently 22 unresolved violations on record for this water system. Unresolved violations indicate issues that have not yet been formally corrected in EPA tracking systems. Contact Arizona Water Company - Pinal Valley for the latest update.
How do I get a copy of my water quality report for 85172?+
Your water utility — Arizona Water Company - Pinal Valley — 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 "Arizona Water Company - Pinal Valley Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 85172?+
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 85172, with detected contaminants including Lead and Combined Radium, a multi-stage filter or reverse osmosis system is recommended.
Is 85172 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Current EPA data for 85172 shows a lead level of 0.4 ppb — below the action level, but as an extra precaution, run your tap for 30 seconds before use and consider a certified lead filter for infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 85172 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 Arizona Water Company - Pinal Valley. 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 →