Tempe, Arizona Water Quality Report
Water quality data for 5 water systems serving 167,062 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 278.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 2780% | Above guideline |
| PFBA | 0.010 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.026 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.007 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.022 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.070 | 0.010 ug/L | 0.001 ug/L(EWG) | 705% | Above limit |
| PFOA | 0.039 | 0.004 ug/L | 0.090 ug/L(EWG) | 967% | Above limit |
| PFOS | 0.056 | 0.004 ug/L | 0.300 ug/L(EWG) | 1395% | Above limit |
| PFPeA | 0.014 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFPeS | 0.008 | 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 (10)
75
Aug 25, 2025
2E
Jul 2, 2025
2E
Jul 2, 2025
4G
Jul 2, 2025
4G
Jul 2, 2025
52
Jul 1, 2025
52
Jul 1, 2025
52
Jan 1, 2025
52
Jan 1, 2025
75
Dec 20, 2024
Resolved Violations (490)
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
+ 485 more resolved violations
Frequently Asked Questions
Is Tempe tap water safe to drink?
Tempe'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 Tempe tap water?
10 contaminants have been detected in Tempe's water supply across 5 water systems. See the full contaminant table above for details.
How can I improve my water quality in Tempe?
Install a water filter rated for the specific contaminants found in Tempe's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Tempe have any water quality violations?
Yes, Tempe currently has 42 active violations. See the violations section above for details.