Phoenix, Arizona Water Quality Report
Water quality data for 74 water systems serving 2,296,664 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 796.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 7960% | Above guideline |
| PFBA | 0.020 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.091 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.009 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.019 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.012 | 0.010 ug/L | 0.001 ug/L(EWG) | 120% | Above limit |
| PFOA | 0.010 | 0.004 ug/L | 0.090 ug/L(EWG) | 250% | Above limit |
| PFOS | 0.006 | 0.004 ug/L | 0.300 ug/L(EWG) | 150% | Above limit |
| PFPeA | 0.021 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFPeS | 0.004 | No federal limit | — | — | No federal 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
Active Violations (35)
75
Aug 28, 2025
34
Aug 20, 2025
34
Aug 20, 2025
4B
Aug 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
34
Jun 10, 2025
75
Dec 20, 2024
75
Dec 20, 2024
75
Dec 20, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
52
Oct 1, 2024
52
Oct 1, 2024
34
Aug 22, 2024
34
Aug 22, 2024
71
Jul 1, 2024
52
Oct 1, 2023
52
Oct 1, 2023
52
Oct 1, 2023
71
Jul 1, 2021
71
Jul 1, 2021
72
Oct 1, 2016
72
Oct 1, 2016
71
Jul 1, 2016
71
Jul 1, 2016
72
Oct 1, 2012
71
Jul 1, 2012
72
Oct 1, 2011
Resolved Violations (965)
3A
Sep 1, 2025 — Sep 30, 2025
75
Aug 8, 2025
75
Aug 8, 2025
27
Aug 1, 2025 — Aug 31, 2025
27
Aug 1, 2025 — Aug 31, 2025
+ 960 more resolved violations
Frequently Asked Questions
Is Phoenix tap water safe to drink?
Phoenix's water has 3 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Phoenix tap water?
10 contaminants have been detected in Phoenix's water supply across 74 water systems. See the full contaminant table above for details.
How can I improve my water quality in Phoenix?
Install a water filter rated for the specific contaminants found in Phoenix's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Phoenix have any water quality violations?
Yes, Phoenix currently has 532 active violations. See the violations section above for details.