Water Quality: Rancho Santa Margarita, CA
3 water systems • 207,973 people served
No Health ViolationsWater Quality Summary
Rancho Santa Margarita is served by 3 public water systems with a combined service population of 207,973 people, and has 10 EPA Safe Drinking Water Act violations on record. None of those violations are health-based — the records reflect missed monitoring or reporting deadlines rather than a contaminant exceeding safe levels. Rancho Santa Margarita's violation count is 79% below the national average for California.
Water Systems Serving Rancho Santa Margarita
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| SANTA MARGARITA WATER DISTRICT | CA3010101 | Surface Water | 168,289 | 0 |
| SANTA MARGARITA WATER DISTRICT-ID9 | CA3010030 | Surface Water | 39,684 | 8 |
| SAN JUAN BASIN AUTHORITY | CA3010120 | Groundwater | 0 | 2 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in California
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.