Public water system · CA4110009
ActiveCalifornia Water Service-S San Francisco
Community water system in San Mateo County, California, drawing primarily on purchased surface water.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
64,146
Service connections
16,449
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2013-06-01 | 34 | 3014 | No | Resolved |
| 1993-06-01 | 41 | 0200 | Yes | Resolved |
| 1992-10-01 | 22 | 3100 | Yes | Resolved |
California Water Service-S San Francisco: frequently asked questions
Is California Water Service-S San Francisco's water safe to drink?
California Water Service-S San Francisco is an active community water system regulated under the Safe Drinking Water Act, overseen by the CA state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs California Water Service-S San Francisco?
California Water Service-S San Francisco (PWSID CA4110009) is a private-owned community water system, regulated by the CA state drinking water program.
How many people does California Water Service-S San Francisco serve?
California Water Service-S San Francisco reports serving 64,146 people through 16,449 service connections in San Mateo County, California.
Where does California Water Service-S San Francisco get its water?
EPA SDWIS lists this system's primary water source as purchased surface water.
Other water systems in San Mateo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Daly City | San Mateo | 104,901 | Community | Purchased surface water |
| California Water Service - San Mateo | San Mateo | 102,348 | Community | Purchased surface water |
| City of Redwood City | San Mateo | 92,819 | Community | Purchased surface water |
| California Water Service - Bear Gulch | San Mateo | 61,431 | Community | Surface water |
| City of San Bruno | San Mateo | 42,631 | Community | Purchased surface water |
| North Coast County Water Dist | San Mateo | 38,546 | Community | Purchased surface water |