D
48

Poor Water Quality

Peoria, AZ 85345

Maricopa County · Population served: 188,526 · Data updated March 2026

Water Systems Serving This Area

🏔
PEORIA CITY OF
Surface water · Pop. 187,676
PWSID: AZ0407096
🌊
KOHALA RANCH WATER CO.
Groundwater · Pop. 850
PWSID: HI0000151

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
10.8
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

3 detected 1 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBS14.8 ppt2000 ppt100 pptBelow limit
PFOA5.6 ppt4 ppt4 pptExceeded
PFHxS3.7 ppt10 ppt10 pptBelow limit

Violation History (Last 5 Years)

35Total (5yr)
0Health-Based
22Major

Water Quality Summary

Understanding Your Water in Peoria

Tap water quality in Peoria, Arizona (85345) receives an overall grade of D (Poor) with a score of 48 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 12 points below the Arizona state average of 60. Compared to the national average (75), this area scores significantly lower. The area is served by 2 water systems providing water to approximately 188,526 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 1 PFAS compound exceeds EPA limits — a significant concern given the persistent nature of these chemicals. The area has 35 violations over the past 5 years, though none were classified as health-based.

Your Score 48/100 D
vs State 12 pts below Arizona avg (60)
vs National 27 pts below national avg (75)

What a Grade D Means

A score of 48/100 signals poor water quality in Peoria, AZ. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

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

Tap water in Peoria, Arizona receives a grade of D (Poor) with a score of 48/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.

ZIP code 85345 is served by 2 water systems using surface water, groundwater sources, providing water to approximately 188,526 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 10.8 ppb in Peoria, Arizona. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

Yes — 3 PFAS compounds were detected in water serving Peoria, Arizona, and 1 exceeds EPA maximum contaminant levels. PFAS are persistent chemicals linked to cancer, immune system effects, and developmental issues. A reverse osmosis or activated carbon filter certified for PFAS removal is recommended.

Water systems serving Peoria, Arizona have received 35 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.

Based on detected contaminants (lead, PFAS), residents in Peoria, Arizona should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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