PALO ALTO PARK MUTUAL WATER COMPANY
California — Community Water System — PWSID: CA4110020
System Information
| PWSID | CA4110020 |
| System Name | PALO ALTO PARK MUTUAL WATER COMPANY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | EAST PALO ALTO |
| ZIP Code | 94303 |
| Address | 2190 ADDISON AVE |
| Organization | LINCOLN, NIAMBI K.V. |
| Phone | 650-322-6903 |
Population & Service
| Population Served | 2,900 |
| Service Connections | 692 |
Drinking Water Violations (8)
This water system has 8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 14, 2018 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Aug 9, 2021 | Ground Water Rule |
| Jun 14, 2018 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Aug 9, 2021 | Ground Water Rule |
| Jul 1, 2015 | Jul 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | Total Coliform Rule |
| Jul 1, 2015 | Jul 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | Total Coliform Rule |
| Jul 1, 2001 | Jul 31, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2001 | Total Coliform Rule |
| Jul 1, 2001 | Jul 31, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2001 | Total Coliform Rule |
| Aug 1, 1987 | Aug 31, 1987 | Other | No | No | — | — | — | Archived | Aug 31, 1987 | Miscellaneous Other Rules | |
| — | — | — | 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.