C
65

US Water Score: C

Queen Creek, AZ 85143

Maricopa County · Population served: 87,435 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

🌊
EPCOR - SAN TAN
Groundwater · Pop. 87,435
PWSID: AZ0411128

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.0
15 ppb 1 ppb Passed

Violation History (Last 5 Years)

31Total (5yr)
0Health-Based
30Major

Water Quality Summary

Understanding Your Water in Queen Creek

Tap water quality in Queen Creek, Arizona (85143) receives an overall grade of C (Mixed record-based signals) with a score of 65 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 7 points below the Arizona state average of 72. The area is served by Epcor - San Tan, a groundwater system providing water to approximately 87,435 people. The area has 31 violations over the past 5 years, though none were classified as health-based.

Your Score 65/100 C
vs State 7 pts below Arizona avg (72)
vs National 10 pts below national avg (75)

What a Grade C Means

A score of 65/100 indicates fair performance in the US Water Score model for Queen Creek, AZ. The records show noteworthy concerns, such as elevated contaminant levels, violation history, or both. Review the detailed contaminant data and official utility reports before making decisions.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Queen Creek, Arizona receives an internal US Water Score grade of C (Fair) with a score of 65/100. Our model found some system-level concerns, such as violation history or elevated contaminant levels. Review your utility's Consumer Confidence Report and consult a qualified professional for household-specific health questions.

ZIP code 85143 is served by 1 water system using groundwater sources, providing water to approximately 87,435 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead levels in Queen Creek, Arizona are 0.0 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.

No PFAS ("forever chemicals") were detected in water systems serving Queen Creek, Arizona during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.

Water systems serving Queen Creek, Arizona have received 31 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Water in Queen Creek, Arizona shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.

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