Santa Ana, California Water Quality Report
Water quality data for 7 water systems serving 311,089 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 38.5 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 385% | Above guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.008 | 0.010 ug/L | 0.001 ug/L(EWG) | 84% | Near limit |
| PFOA | 0.009 | 0.004 ug/L | 0.090 ug/L(EWG) | 223% | Above limit |
| PFOS | 0.014 | 0.004 ug/L | 0.300 ug/L(EWG) | 355% | 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 (20)
71
Jul 1, 2025
71
Jul 1, 2025
75
Jun 6, 2025
75
Mar 8, 2025
75
Dec 8, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (146)
2E
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
71
Jul 1, 2023
71
Jul 1, 2023
+ 141 more resolved violations
Frequently Asked Questions
Is Santa Ana tap water safe to drink?
Santa Ana'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 Santa Ana tap water?
6 contaminants have been detected in Santa Ana's water supply across 7 water systems. See the full contaminant table above for details.
How can I improve my water quality in Santa Ana?
Install a water filter rated for the specific contaminants found in Santa Ana's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Santa Ana have any water quality violations?
Yes, Santa Ana currently has 20 active violations. See the violations section above for details.