LAGUNA MOUNTAIN MUTUAL WATER CO.
California - Community Water System - PWSID: CA3700422
System Information
| PWSID | CA3700422 |
| System Name | LAGUNA MOUNTAIN MUTUAL WATER CO. |
| 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 | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | MT LAGUNA |
| ZIP Code | 91948 |
| Address | P.O. BOX 163 |
| Organization | RICE, MIKE |
| Phone | 619-985-3462 |
Population & Service
| Population Served | 100 |
| Service Connections | 30 |
Drinking Water Violations (17)
This water system has 17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2022 | Jun 30, 2022 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2022 | - | |
| Jun 1, 2022 | Jun 30, 2022 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2022 | - | |
| Feb 1, 2019 | Feb 28, 2019 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2019 | - | |
| Feb 1, 2019 | Feb 28, 2019 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2019 | - | |
| Jan 1, 2016 | Jan 31, 2016 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jan 31, 2016 | - | |
| Jan 1, 2016 | Jan 31, 2016 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jan 31, 2016 | - | |
| Dec 1, 2007 | Dec 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2007 | - | |
| Dec 1, 2007 | Dec 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2007 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Dec 30, 2005 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Dec 30, 2005 | - | |
| Jul 1, 1993 | - | MR | No | No | - | TT | - | Resolved | Oct 13, 2004 | - | |
| Aug 1, 1984 | Aug 31, 1984 | Other | No | No | - | - | - | Archived | Aug 31, 1984 | - | |
| Sep 1, 1983 | Sep 30, 1983 | Other | No | No | - | - | - | Archived | Sep 30, 1983 | - | |
| Aug 1, 1983 | Aug 31, 1983 | Other | No | No | - | - | - | Archived | Aug 31, 1983 | - | |
| Jul 1, 1983 | Jul 31, 1983 | Other | No | No | - | - | - | Archived | Jul 31, 1983 | - | |
| 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.