CITY OF SUNNYVALE
California — Community Water System — PWSID: CA4310014
System Information
| PWSID | CA4310014 |
| System Name | CITY OF SUNNYVALE |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | SUNNYVALE |
| ZIP Code | 94088 |
| Address | P.O. BOX 3707 |
| Organization | DE LA CRUZ, JOE |
| Phone | 408-730-7561 |
Population & Service
| Population Served | 157,566 |
| Service Connections | 28,372 |
Drinking Water Violations (145)
This water system has 145 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar 1, 2015 | Mar 31, 2015 | TT | Yes | No | — | — | — | Resolved | Mar 31, 2015 | — | |
| Mar 1, 2015 | Mar 31, 2015 | TT | Yes | No | — | — | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 2 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2015 | Dec 31, 2023 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2023 | — |
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.