HIDDEN VALLEY LAKE CSD
California — Community Water System — PWSID: CA1710015
System Information
| PWSID | CA1710015 |
| System Name | HIDDEN VALLEY LAKE CSD |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 5, 1981 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | HIDDEN VALLEY LAKE |
| ZIP Code | 95467 |
| Address | 19400 Hartmann Road |
| Organization | WILKINSON, TRISH |
| Phone | 707-987-9201 |
Population & Service
| Population Served | 6,235 |
| Service Connections | 2,518 |
Drinking Water Violations (2)
This water system has 2 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.