Gilbert, Arizona Water Quality Report
Water quality data for 10 water systems serving 249,178 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 258.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 2580% | Above guideline |
| PFBA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.018 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.006 | 0.004 ug/L | 0.090 ug/L(EWG) | 163% | Above limit |
| PFOS | 0.010 | 0.004 ug/L | 0.300 ug/L(EWG) | 245% | Above limit |
| PFPeA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
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
Active Violations (5)
71
Jul 1, 2025
2E
Oct 17, 2024
2E
Oct 17, 2024
75
Feb 15, 2024
72
Dec 29, 2023
Resolved Violations (495)
03
Jul 1, 2025 — Sep 30, 2025
4B
Jul 1, 2025
4B
Jul 1, 2025
02
Jul 1, 2025 — Sep 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
+ 490 more resolved violations
Frequently Asked Questions
Is Gilbert tap water safe to drink?
Gilbert's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Gilbert tap water?
7 contaminants have been detected in Gilbert's water supply across 10 water systems. See the full contaminant table above for details.
How can I improve my water quality in Gilbert?
Install a water filter rated for the specific contaminants found in Gilbert's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Gilbert have any water quality violations?
Yes, Gilbert currently has 86 active violations. See the violations section above for details.