Prescott, Arizona Water Quality Report
Water quality data for 25 water systems serving 50,941 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 36.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 360% | Above guideline |
| PFBS | 0.024 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.013 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.006 | 0.010 ug/L | 0.001 ug/L(EWG) | 65% | Within limit |
| PFOA | 0.011 | 0.004 ug/L | 0.090 ug/L(EWG) | 285% | Above limit |
| PFOS | 0.009 | 0.004 ug/L | 0.300 ug/L(EWG) | 217% | Above limit |
| PFPeA | 0.015 | 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 (18)
71
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2025
75
Mar 25, 2025
45
Jan 3, 2025
45
Jan 3, 2025
75
Dec 20, 2024
45
Oct 31, 2024
45
Oct 31, 2024
45
Oct 31, 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
52
Oct 1, 2024
52
Oct 1, 2024
Resolved Violations (482)
34
Aug 20, 2025
34
Aug 20, 2025
01
Jul 1, 2025 — Sep 30, 2025
01
Jul 1, 2025 — Sep 30, 2025
01
Jul 1, 2025 — Sep 30, 2025
+ 477 more resolved violations
Frequently Asked Questions
Is Prescott tap water safe to drink?
Prescott'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 Prescott tap water?
8 contaminants have been detected in Prescott's water supply across 25 water systems. See the full contaminant table above for details.
How can I improve my water quality in Prescott?
Install a water filter rated for the specific contaminants found in Prescott's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Prescott have any water quality violations?
Yes, Prescott currently has 232 active violations. See the violations section above for details.