CUYAMACA WATER DISTRICT
California — Community Water System — PWSID: CA3700074
System Information
| PWSID | CA3700074 |
| System Name | CUYAMACA WATER DISTRICT |
| 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 | Nov 30, 1981 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | JULIAN |
| ZIP Code | 92036 |
| Address | 15240 Highway 79 |
| Organization | HILFIKER, DAVID |
| Phone | 760-427-4922 |
Population & Service
| Population Served | 2,923 |
| Service Connections | 186 |
Drinking Water Violations (25)
This water system has 25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2022 | Sep 30, 2022 | MCL | Yes | No | — | — | — | Resolved | Sep 30, 2022 | — | |
| Sep 1, 2022 | Sep 30, 2022 | MCL | Yes | No | — | — | — | Resolved | Sep 30, 2022 | — | |
| Jan 1, 2013 | Jan 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2013 | — | |
| Jan 1, 2013 | Jan 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2013 | — | |
| Jan 1, 2011 | Jan 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2011 | — | |
| Jan 1, 2011 | Jan 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2011 | — | |
| Feb 1, 2008 | Feb 29, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2008 | — | |
| Feb 1, 2008 | Feb 29, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2008 | — | |
| Jul 1, 2007 | — | Other | No | No | — | — | — | Resolved | Dec 20, 2007 | — | |
| Jul 1, 2007 | — | Other | No | No | — | — | — | Resolved | Dec 20, 2007 | — | |
| Jul 1, 2005 | — | Other | No | No | — | — | — | Resolved | Dec 20, 2005 | — | |
| Jul 1, 2005 | — | Other | No | No | — | — | — | Resolved | Dec 20, 2005 | — | |
| Jan 1, 2005 | Jan 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2005 | — | |
| Jan 1, 2005 | Jan 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2005 | — | |
| Jan 1, 2005 | Mar 31, 2005 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2005 | — | |
| Jan 1, 2005 | Mar 31, 2005 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2005 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Sep 30, 2005 | — | |
| Sep 1, 1984 | Sep 30, 1984 | Other | No | No | — | — | — | Archived | Sep 30, 1984 | — | |
| Jul 1, 1984 | Jul 31, 1984 | Other | No | No | — | — | — | Archived | Jul 31, 1984 | — | |
| Nov 1, 1983 | Nov 30, 1983 | Other | No | No | — | — | — | Archived | Nov 30, 1983 | — | |
| Jul 1, 1983 | Jul 31, 1983 | Other | No | No | — | — | — | Archived | Jul 31, 1983 | — | |
| Jun 1, 1983 | Jun 30, 1983 | Other | No | No | — | — | — | Archived | Jun 30, 1983 | — | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 30, 1982 | — | |
| Oct 30, 1980 | Oct 29, 1981 | MR | No | Yes | — | 15 pCi/L | — | Archived | Oct 29, 1981 | — | |
| — | — | — | 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.