Poor Water Quality
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
5.0
|
15 ppb | 1 ppb | Warning |
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFBS | 18.1 ppt | 2000 ppt | 100 ppt | Below limit |
| PFBS | 15.2 ppt | 2000 ppt | 100 ppt | Below limit |
| PFOS | 9.8 ppt | 4 ppt | 4 ppt | Exceeded |
| PFHxS | 9.3 ppt | 10 ppt | 10 ppt | Below limit |
| PFOA | 6.5 ppt | 4 ppt | 4 ppt | Exceeded |
| PFPeA | 6.2 ppt | No standard | — | Unregulated |
| PFBA | 5.8 ppt | No standard | 500 ppt | Unregulated |
| PFHxA | 4.4 ppt | No standard | 400 ppt | Unregulated |
Water Quality Summary
Tap water quality in Mesa, Arizona (85212) receives an overall grade of D (Poor) with a score of 46 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 14 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 713,600 people, using surface water sources. Testing has found elevated levels of Lead that warrant attention. Notably, 2 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. The area has 382 violations over the past 5 years, though none were classified as health-based.
A score of 46/100 signals poor water quality in Mesa, 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.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
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.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
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
Tap water in Mesa, Arizona receives a grade of D (Poor) with a score of 46/100. 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 85212 is served by 2 water systems using surface water sources, providing water to approximately 713,600 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.
Lead was detected at 5.0 ppb in Mesa, 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 — 9 PFAS compounds were detected in water serving Mesa, Arizona, and 2 exceed 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 Mesa, Arizona have received 382 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 Mesa, 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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