LAS CUMBRES MUTUAL WATER CO
California - Community Water System - PWSID: CA4400631
System Information
| PWSID | CA4400631 |
| System Name | LAS CUMBRES MUTUAL WATER CO |
| System Type | Community Water System |
| Water Source | Surface 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 | LOS GATOS |
| ZIP Code | 95033 |
| Address | 18240 Las Cumbres Rd. |
| Organization | YEE, JUDY |
| Phone | 408-395-4095 |
Population & Service
| Population Served | 402 |
| Service Connections | 125 |
Drinking Water Violations (251)
This water system has 251 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Jul 31, 2025 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2025 | - | |
| Jun 1, 2018 | Jun 30, 2018 | MR | No | No | - | - | - | Resolved | Jun 30, 2018 | - | |
| Jun 1, 2018 | Jun 30, 2018 | MR | No | No | - | - | - | Resolved | Jun 30, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MR | No | No | - | - | - | Resolved | May 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MR | No | No | - | - | - | Resolved | May 31, 2018 | - | |
| Apr 1, 2018 | Apr 30, 2018 | MR | No | No | - | - | - | Resolved | Apr 30, 2018 | - | |
| Apr 1, 2018 | Apr 30, 2018 | MR | No | No | - | - | - | Resolved | Apr 30, 2018 | - | |
| Mar 1, 2018 | Mar 31, 2018 | MR | No | No | - | - | - | Resolved | Mar 31, 2018 | - | |
| Mar 1, 2018 | Mar 31, 2018 | MR | No | No | - | - | - | Resolved | Mar 31, 2018 | - | |
| Nov 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Nov 1, 2016 | Nov 30, 2016 | TT | Yes | No | - | - | - | Resolved | Nov 30, 2016 | - | |
| Nov 1, 2016 | Nov 30, 2016 | TT | Yes | No | - | - | - | Resolved | Nov 30, 2016 | - | |
| Nov 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Oct 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Oct 1, 2016 | Oct 31, 2016 | TT | Yes | No | - | - | - | Resolved | Oct 31, 2016 | - | |
| Oct 1, 2016 | Oct 31, 2016 | TT | Yes | No | - | - | - | Resolved | Oct 31, 2016 | - | |
| Oct 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Sep 1, 2016 | Sep 30, 2016 | TT | Yes | No | - | - | - | Resolved | Sep 30, 2016 | - | |
| Sep 1, 2016 | Sep 30, 2016 | TT | Yes | No | - | - | - | Resolved | Sep 30, 2016 | - | |
| Sep 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Sep 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Aug 1, 2016 | Aug 31, 2016 | TT | Yes | No | - | - | - | Resolved | Aug 31, 2016 | - | |
| Aug 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Aug 1, 2016 | Aug 31, 2016 | TT | Yes | No | - | - | - | Resolved | Aug 31, 2016 | - | |
| Aug 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Jul 1, 2016 | Jul 31, 2016 | TT | Yes | No | - | - | - | Resolved | Jul 31, 2016 | - | |
| Jul 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Jul 1, 2016 | Jul 31, 2016 | TT | Yes | No | - | - | - | Resolved | Jul 31, 2016 | - | |
| Jul 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Jun 1, 2016 | Jun 30, 2016 | TT | Yes | No | - | - | - | Resolved | Jun 30, 2016 | - | |
| Jun 1, 2016 | Jun 30, 2016 | TT | Yes | No | - | - | - | Resolved | Jun 30, 2016 | - | |
| Jun 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Jun 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| May 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| May 1, 2016 | May 31, 2016 | TT | Yes | No | - | - | - | Resolved | May 31, 2016 | - | |
| May 1, 2016 | May 31, 2016 | TT | Yes | No | - | - | - | Resolved | May 31, 2016 | - | |
| May 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Apr 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Apr 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Apr 1, 2016 | Apr 30, 2016 | TT | Yes | No | - | - | - | Resolved | Apr 30, 2016 | - | |
| Apr 1, 2016 | Apr 30, 2016 | TT | Yes | No | - | - | - | Resolved | Apr 30, 2016 | - | |
| Mar 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Mar 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Mar 1, 2016 | Mar 31, 2016 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2016 | - | |
| Mar 1, 2016 | Mar 31, 2016 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2016 | - | |
| Feb 1, 2016 | Feb 29, 2016 | TT | Yes | No | - | - | - | Resolved | Feb 29, 2016 | - | |
| Feb 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Feb 1, 2016 | - | TT | Yes | No | - | - | - | Resolved | Feb 7, 2018 | - | |
| Feb 1, 2016 | Feb 29, 2016 | TT | Yes | No | - | - | - | Resolved | Feb 29, 2016 | - |
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.