Water Quality: San Dimas, CA
6 water systems • 157,316 people served
No Health ViolationsWater Quality Summary
San Dimas is served by 6 public water systems with a combined service population of 157,316 people, and has 4 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. San Dimas's violation count is 92% below the national average for California.
Water Systems Serving San Dimas
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| GSWC-SAN DIMAS | CA1910142 | Surface Water | 56,538 | 0 |
| GSWC - CLAREMONT | CA1910024 | Surface Water | 39,730 | 4 |
| GSWC-SOUTH ARCADIA | CA1910212 | Groundwater | 27,072 | 0 |
| GSWC-SOUTH SAN GABRIEL | CA1910223 | Surface Water | 26,240 | 0 |
| GSWC - CALIPATRIA | CA1310003 | Surface Water | 7,363 | 0 |
| GOLDEN STATE WATER MORONGO DELNORTE | CA3600270 | Groundwater | 373 | 0 |
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.