Mesa, Arizona Water Quality Report
Water quality data for 5 water systems serving 466,100 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 525.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 5250% | Above guideline |
| PFBS | 0.015 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.003 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.009 | 0.010 ug/L | 0.001 ug/L(EWG) | 93% | Near limit |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Resolved Violations (500)
3A
Aug 1, 2025 — Aug 31, 2025
27
Mar 1, 2025 — Mar 31, 2025
27
Mar 1, 2025 — Mar 31, 2025
27
Mar 1, 2025 — Mar 31, 2025
27
Feb 1, 2025 — Feb 28, 2025
+ 495 more resolved violations
Frequently Asked Questions
Is Mesa tap water safe to drink?
Mesa's water meets all EPA maximum contaminant levels. However, 4 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Mesa tap water?
4 contaminants have been detected in Mesa's water supply across 5 water systems. See the full contaminant table above for details.
How can I improve my water quality in Mesa?
Install a water filter rated for the specific contaminants found in Mesa's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Mesa have any water quality violations?
Yes, Mesa currently has 31 active violations. See the violations section above for details.