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 | Nov 17, 2025 |
Location & Contact
| State | California |
| City | JULIAN |
| ZIP Code | 92036 |
| Address | 15240 Highway 79 |
| Organization | HILFIKER, DAVID |
| Phone | 760-427-4922 |
Population & Service
| Population Served | 33,030 |
| Service Connections | 186 |
Drinking Water Violations (24)
This water system has 24 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 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Sep 30, 2022 | Revised Total Coliform Rule |
| Sep 1, 2022 | Sep 30, 2022 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Sep 30, 2022 | Revised Total Coliform Rule |
| Jan 1, 2013 | Jan 31, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2013 | Total Coliform Rule |
| Jan 1, 2013 | Jan 31, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2013 | Total Coliform Rule |
| Jan 1, 2011 | Jan 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2011 | Total Coliform Rule |
| Jan 1, 2011 | Jan 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2011 | Total Coliform Rule |
| Feb 1, 2008 | Feb 29, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2008 | Total Coliform Rule |
| Feb 1, 2008 | Feb 29, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 2008 | Total Coliform Rule |
| Jul 1, 2007 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 20, 2007 | Consumer Confidence Rule |
| Jul 1, 2007 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 20, 2007 | Consumer Confidence Rule |
| Jul 1, 2005 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 20, 2005 | Consumer Confidence Rule |
| Jul 1, 2005 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 20, 2005 | Consumer Confidence Rule |
| Jan 1, 2005 | Mar 31, 2005 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Mar 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Mar 31, 2005 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Mar 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Jan 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2005 | Total Coliform Rule |
| Jan 1, 2005 | Jan 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2005 | Total Coliform Rule |
| Sep 1, 1984 | Sep 30, 1984 | Other | No | No | — | — | — | Archived | Sep 30, 1984 | Miscellaneous Other Rules | |
| Jul 1, 1984 | Jul 31, 1984 | Other | No | No | — | — | — | Archived | Jul 31, 1984 | Miscellaneous Other Rules | |
| Nov 1, 1983 | Nov 30, 1983 | Other | No | No | — | — | — | Archived | Nov 30, 1983 | Miscellaneous Other Rules | |
| Jul 1, 1983 | Jul 31, 1983 | Other | No | No | — | — | — | Archived | Jul 31, 1983 | Miscellaneous Other Rules | |
| Jun 1, 1983 | Jun 30, 1983 | Other | No | No | — | — | — | Archived | Jun 30, 1983 | Miscellaneous Other Rules | |
| Oct 1, 1981 | Sep 30, 1982 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 30, 1982 | Radionuclides and Revised Rad Rule |
| Oct 30, 1980 | Oct 29, 1981 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Oct 29, 1981 | Radionuclides and Revised Rad Rule |
| — | — | — | 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.