Water Quality: Foster City, CA
1 water system • 36,556 people served
No Health ViolationsWater Quality Summary
Foster City is served by 1 public water system with a combined service population of 36,556 people, and has 3 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. Foster City's violation count is 94% below the national average for California.
Water Systems Serving Foster City
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| ESTERO MUNICIPAL IMPROVEMENT DISTRICT | CA4110021 | Surface Water | 36,556 | 3 |
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.