Ukiah, California Water Quality Report
Water quality data for 8 water systems serving 33,008 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| 6:2 FTS | 0.018 | No federal limit | — | — | No federal limit |
| PFBA | 0.009 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.006 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.003 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.007 | 0.010 ug/L | 0.001 ug/L(EWG) | 73% | Within limit |
| PFOA | 0.007 | 0.004 ug/L | 0.090 ug/L(EWG) | 173% | Above limit |
| PFOS | 0.007 | 0.004 ug/L | 0.300 ug/L(EWG) | 185% | Above limit |
| PFPeA | 0.005 | 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 (10)
52
Oct 1, 2022
52
Jul 1, 2021
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (83)
3A
Aug 1, 2024 — Aug 31, 2024
19
Jan 1, 2021 — Jan 31, 2021
19
Jan 1, 2021 — Jan 31, 2021
19
Jan 1, 2021 — Jan 31, 2021
52
Oct 1, 2020
+ 78 more resolved violations
Frequently Asked Questions
Is Ukiah tap water safe to drink?
Ukiah'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 Ukiah tap water?
9 contaminants have been detected in Ukiah's water supply across 8 water systems. See the full contaminant table above for details.
How can I improve my water quality in Ukiah?
Install a water filter rated for the specific contaminants found in Ukiah's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Ukiah have any water quality violations?
Yes, Ukiah currently has 10 active violations. See the violations section above for details.