CITY OF PALO ALTO
California — Community Water System — PWSID: CA4310009
System Information
| PWSID | CA4310009 |
| System Name | CITY OF PALO ALTO |
| 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 | PALO ALTO |
| ZIP Code | 94303 |
| Address | P.O. Box 10250 |
| Organization | ZUCCA, MATT |
| Phone | 650-329-2639 |
Population & Service
| Population Served | 67,231 |
| Service Connections | 19,949 |
Drinking Water Violations (18)
This water system has 18 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 | — | |
| May 1, 2012 | May 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2012 | — | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2010 | — | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2010 | — | |
| Mar 1, 1995 | Mar 31, 1995 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1995 | — | |
| Mar 1, 1995 | Mar 31, 1995 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1995 | — | |
| Mar 1, 1992 | Mar 31, 1992 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | — | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | — | TT | — | Resolved | Jun 30, 1992 | — | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | — | TT | — | Resolved | Jun 30, 1992 | — | |
| Jan 1, 1992 | Jun 30, 1992 | MR | No | No | — | TT | — | Resolved | Jun 30, 1992 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.