La Jolla, California Water Quality Report
Water quality data for 3 water systems serving 331 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 210.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 2100% | Above guideline |
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Compliance & Violations
Active Violations (20)
66
Jan 1, 2025
72
Dec 13, 2024
72
Dec 19, 2023
72
Dec 20, 2021
72
Jan 14, 2020
72
Jan 25, 2019
Violation
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Resolved Violations (480)
27
Jul 1, 2025 — Jul 31, 2025
27
Apr 1, 2025 — Apr 30, 2025
27
Apr 1, 2025 — Apr 30, 2025
27
Jan 1, 2025 — Dec 31, 2025
27
Jan 1, 2025 — Dec 31, 2025
+ 475 more resolved violations
Frequently Asked Questions
Is La Jolla tap water safe to drink?
La Jolla's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in La Jolla tap water?
1 contaminants have been detected in La Jolla's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in La Jolla?
Install a water filter rated for the specific contaminants found in La Jolla's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does La Jolla have any water quality violations?
Yes, La Jolla currently has 38 active violations. See the violations section above for details.