IRVINE RANCH WATER DISTRICT
California - Community Water System - PWSID: CA3010092
System Information
| PWSID | CA3010092 |
| System Name | IRVINE RANCH WATER DISTRICT |
| 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 | IRVINE |
| ZIP Code | 92619-7000 |
| Address | P.O. Box 57000 |
| Organization | COLSTON, JAMES |
| Phone | 949-453-5620 |
Population & Service
| Population Served | 444,800 |
| Service Connections | 121,167 |
Drinking Water Violations (12)
This water system has 12 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, 2020 | Sep 30, 2020 | MON | No | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Sep 1, 2020 | Sep 30, 2020 | MON | No | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Jan 1, 2010 | Jan 31, 2010 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2010 | - | |
| Jan 1, 2010 | Jan 31, 2010 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2010 | - | |
| Jan 1, 2010 | Jan 31, 2010 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2010 | - | |
| Jun 1, 1997 | Jun 30, 1997 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1997 | - | |
| Jun 1, 1997 | Jun 30, 1997 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1997 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.