O'CONNOR HOSPITAL
California — Non-Transient Non-Community — PWSID: CA4300808
System Information
| PWSID | CA4300808 |
| System Name | O'CONNOR HOSPITAL |
| System Type | Non-Transient Non-Community |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Nov 30, 1981 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | SAN JOSE |
| ZIP Code | 95128 |
| Address | 2105 Forest Avenue |
| Organization | SINGER, DANUEL |
| Phone | 408-947-2539 |
Population & Service
| Population Served | 2,500 |
| Service Connections | 2 |
Drinking Water Violations (30)
This water system has 30 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 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | RPT | No | No | — | — | — | Unaddressed | — | Lead and Copper Rule Revisions |
| Oct 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | TT | Yes | No | — | — | — | Unaddressed | — | Lead and Copper Rule Revisions |
| Oct 1, 2024 | Oct 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2024 | Revised Total Coliform Rule |
| Oct 1, 2024 | Oct 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2024 | Revised Total Coliform Rule |
| Oct 1, 2019 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2019 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2018 | Oct 31, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2018 | Revised Total Coliform Rule |
| Oct 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2018 | Oct 31, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2018 | Revised Total Coliform Rule |
| Sep 1, 2018 | Sep 30, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Sep 30, 2018 | Revised Total Coliform Rule |
| Sep 1, 2018 | Sep 30, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Sep 30, 2018 | Revised Total Coliform Rule |
| Oct 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| Jan 1, 2010 | Dec 31, 2010 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2010 | Nitrate Rule |
| Jan 1, 2010 | Dec 31, 2010 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2010 | Nitrate Rule |
| Sep 1, 2005 | Sep 30, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2005 | Total Coliform Rule |
| Sep 1, 2005 | Sep 30, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2005 | Total Coliform Rule |
| Dec 1, 1998 | Dec 31, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1998 | Total Coliform Rule |
| Dec 1, 1998 | Dec 31, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1998 | Total Coliform Rule |
| Aug 1, 1997 | Aug 31, 1997 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 1997 | Total Coliform Rule |
| Aug 1, 1997 | Aug 31, 1997 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 1997 | Total Coliform Rule |
| Jan 1, 1995 | Jan 31, 1995 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 1995 | Total Coliform Rule |
| Jan 1, 1995 | Jan 31, 1995 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 1995 | Total Coliform Rule |
| Aug 1, 1984 | Aug 31, 1984 | Other | No | No | — | — | — | Archived | Aug 31, 1984 | 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.