HILMAR COUNTY WATER DISTRICT
California — Community Water System — PWSID: CA2410012
System Information
| PWSID | CA2410012 |
| System Name | HILMAR COUNTY WATER DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | HILMAR |
| ZIP Code | 95324 |
| Address | P.O. Box 1060 |
| Organization | JORRITSMA, CURTIS |
| Phone | 209-632-3522 |
Population & Service
| Population Served | 5,504 |
| Service Connections | 1,684 |
Drinking Water Violations (5)
This water system has 5 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, 2019 | Mar 31, 2019 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2019 | Nitrate Rule |
| Jan 1, 2019 | Mar 31, 2019 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2019 | Nitrate Rule |
| Jul 1, 1983 | Jul 31, 1983 | Nitrate | MCL | Yes | No | — | 10 mg/L | — | Archived | Jul 31, 1983 | Nitrate Rule |
| Aug 1, 1982 | Sep 30, 1982 | Nitrate | MCL | Yes | No | 60 | 10 mg/L | — | Archived | Sep 30, 1982 | Nitrate 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.