OPUS ONE WINERY
California - Non-Transient Non-Community - PWSID: CA2801026
System Information
| PWSID | CA2801026 |
| System Name | OPUS ONE WINERY |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 21, 1992 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | OAKVILLE |
| ZIP Code | 94562 |
| Address | 7900 ST. HELENA HIGHWAY |
| Organization | MORANT, REGINALD |
| Phone | 707-948-2470 |
Population & Service
| Population Served | 100 |
| Service Connections | 1 |
Drinking Water Violations (28)
This water system has 28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 1, 2022 | Feb 28, 2022 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2022 | - | |
| Feb 1, 2022 | Feb 28, 2022 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2022 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Mar 1, 2014 | Mar 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2014 | - | |
| Mar 1, 2014 | Mar 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2014 | - | |
| Feb 1, 2009 | Feb 28, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2009 | - | |
| Feb 1, 2009 | Feb 28, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2009 | - | |
| Mar 1, 2008 | Mar 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2008 | - | |
| Mar 1, 2008 | Mar 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Jan 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2008 | - | |
| Jan 1, 2008 | Jan 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2008 | - | |
| Feb 1, 2006 | Feb 28, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2006 | - | |
| Feb 1, 2006 | Feb 28, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2006 | - | |
| Mar 1, 2005 | Mar 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2005 | - | |
| Mar 1, 2005 | Mar 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2005 | - | |
| 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 | - | |
| Nov 1, 2000 | Nov 30, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2000 | - | |
| Nov 1, 2000 | Nov 30, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2000 | - | |
| Jan 1, 1999 | Mar 31, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 1999 | - | |
| Jan 1, 1999 | Mar 31, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 1999 | - | |
| Jul 1, 1998 | Sep 30, 1998 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1998 | - | |
| Jul 1, 1998 | Sep 30, 1998 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1998 | - | |
| Jan 1, 1997 | Mar 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 1997 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.