NAPA, CITY OF
California — Community Water System — PWSID: CA2810003
System Information
| PWSID | CA2810003 |
| System Name | NAPA, CITY OF |
| System Type | Community Water System |
| Water Source | Surface Water |
| 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 | NAPA |
| ZIP Code | 94559 |
| Address | P.O. BOX 660 |
| Organization | KEBBAS, ERIN |
| Phone | 707-253-0822 |
Population & Service
| Population Served | 84,804 |
| Service Connections | 25,376 |
Drinking Water Violations (23)
This water system has 23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2016 | Mar 31, 2016 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Jan 1, 2016 | Mar 31, 2016 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MCL | Yes | No | .0957 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MCL | Yes | No | .0957 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | .0815 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | .0815 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Apr 16, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2015 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2013 | — | |
| Apr 1, 1995 | Apr 30, 1995 | TT | Yes | No | — | — | — | Resolved | Apr 30, 1995 | — | |
| Apr 1, 1995 | Apr 30, 1995 | TT | Yes | No | — | — | — | Resolved | Apr 30, 1995 | — | |
| Apr 1, 1995 | Apr 30, 1995 | TT | Yes | No | — | — | — | Resolved | Apr 30, 1995 | — | |
| Aug 1, 1988 | Aug 31, 1988 | Other | No | No | — | — | — | Archived | Aug 31, 1988 | — | |
| Jul 1, 1988 | Jul 31, 1988 | Other | No | No | — | — | — | Archived | Jul 31, 1988 | — | |
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| — | — | — | 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.