Public water system · CA4100509
ActiveCounty Service Area 7
Community water system in San Mateo County, California, drawing primarily on surface water.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
68
Primary source
SW
Surface water
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | 02 | 2456 | Yes | Resolved |
| 2020-01-01 | 02 | 2456 | Yes | Resolved |
| 2018-04-01 | 02 | 2950 | Yes | Resolved |
| 2018-01-01 | 02 | 2950 | Yes | Resolved |
| 2017-10-01 | 02 | 2950 | Yes | Resolved |
| 2017-07-01 | 02 | 2950 | Yes | Resolved |
| 2004-01-01 | 03 | 2981 | No | Resolved |
| 2004-01-01 | 03 | 2987 | No | Resolved |
| 2004-01-01 | 03 | 2955 | No | Resolved |
| 2004-01-01 | 03 | 2983 | No | Resolved |
| 2004-01-01 | 03 | 2969 | No | Resolved |
| 2004-01-01 | 03 | 2968 | No | Resolved |
County Service Area 7: frequently asked questions
Is County Service Area 7's water safe to drink?
County Service Area 7 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 County Service Area 7?
County Service Area 7 (PWSID CA4100509) is a local government-owned community water system, regulated by the CA state drinking water program.
How many people does County Service Area 7 serve?
County Service Area 7 reports serving 300 people through 68 service connections in San Mateo County, California.
Where does County Service Area 7 get its water?
EPA SDWIS lists this system's primary water source as 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-S San Francisco | San Mateo | 64,146 | 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 |