NATIONAL 9
California - Non-Transient Non-Community - PWSID: CA0900581
System Information
| PWSID | CA0900581 |
| System Name | NATIONAL 9 |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Inactive |
| Owner Type | Private |
| 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 | 936 EL CAJON WAY |
| Organization | BAR, ABRAHAM |
| Phone | 650-533-3467 |
Population & Service
| Population Served | 63 |
| Service Connections | 2 |
Drinking Water Violations (34)
This water system has 34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2021 | Sep 30, 2021 | MON | No | Yes | - | - | - | Archived | Sep 30, 2021 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2020 | - | |
| Oct 1, 2020 | Dec 31, 2020 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | - | - | Archived | Dec 31, 2020 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2004 | - | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2004 | - | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2004 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2004 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2004 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2004 | - | |
| Jul 1, 2002 | Sep 30, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2002 | - | |
| Jul 1, 2002 | Sep 30, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2002 | - | |
| Jul 1, 2002 | Sep 30, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2002 | - | |
| Apr 1, 2002 | Jun 30, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2002 | - | |
| Apr 1, 2002 | Jun 30, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2002 | - | |
| Apr 1, 2002 | Jun 30, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2002 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2001 | - | |
| Apr 1, 2001 | Apr 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2001 | - | |
| Apr 1, 2001 | Apr 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2001 | - | |
| Jan 1, 2001 | Jan 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2001 | - | |
| Jan 1, 2001 | Jan 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2001 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1996 | - |
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.