Rancho Santa Margarita, California Water Quality Report
Water quality data for 4 water systems serving 207,973 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 57.4 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 574% | Above guideline |
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Compliance & Violations
Active Violations (7)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (54)
27
Oct 1, 2022 — Dec 31, 2022
27
Oct 1, 2022 — Dec 31, 2022
52
Oct 1, 2020
52
Oct 1, 2020
34
May 3, 2019
+ 49 more resolved violations
Frequently Asked Questions
Is Rancho Santa Margarita tap water safe to drink?
Rancho Santa Margarita'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 Rancho Santa Margarita tap water?
1 contaminants have been detected in Rancho Santa Margarita's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Rancho Santa Margarita?
Install a water filter rated for the specific contaminants found in Rancho Santa Margarita's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Rancho Santa Margarita have any water quality violations?
Yes, Rancho Santa Margarita currently has 7 active violations. See the violations section above for details.