SUMMIT WEST MUTUAL WATER CO.
California - Community Water System - PWSID: CA4400617
System Information
| PWSID | CA4400617 |
| System Name | SUMMIT WEST MUTUAL WATER CO. |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 | 95031 |
| Address | P.O. Box 974 |
| Organization | SELTZER, LES |
| Phone | 408-353-8579 |
Population & Service
| Population Served | 481 |
| Service Connections | 146 |
Drinking Water Violations (41)
This water system has 41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Unaddressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Aug 17, 2021 | - | |
| Oct 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Aug 17, 2021 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2019 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2019 | - | |
| Oct 1, 2017 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2019 | - | |
| Oct 1, 2017 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2019 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Nov 1, 2004 | Nov 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2004 | - | |
| Nov 1, 2004 | Nov 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2004 | - | |
| Jul 1, 1993 | Apr 4, 2000 | MR | No | No | - | TT | - | Resolved | Apr 4, 2000 | - | |
| Jan 1, 1992 | - | TT | Yes | No | - | - | - | Resolved | Jul 31, 2001 | - | |
| Sep 1, 1984 | Sep 30, 1984 | Other | No | No | - | - | - | Archived | Sep 30, 1984 | - | |
| Aug 1, 1984 | Aug 31, 1984 | Other | No | No | - | - | - | Archived | Aug 31, 1984 | - | |
| Jul 1, 1984 | Jul 31, 1984 | Other | No | No | - | - | - | Archived | Jul 31, 1984 | - | |
| Jun 1, 1984 | Jun 30, 1984 | Other | No | No | - | - | - | Archived | Jun 30, 1984 | - | |
| May 1, 1984 | May 31, 1984 | Other | No | No | - | - | - | Archived | May 31, 1984 | - | |
| Apr 1, 1984 | Apr 30, 1984 | Other | No | No | - | - | - | Archived | Apr 30, 1984 | - | |
| Mar 1, 1984 | Mar 31, 1984 | Other | No | No | - | - | - | Archived | Mar 31, 1984 | - | |
| Feb 1, 1984 | Feb 29, 1984 | Other | No | No | - | - | - | Archived | Feb 29, 1984 | - | |
| Jan 1, 1984 | Jan 31, 1984 | Other | No | No | - | - | - | Archived | Jan 31, 1984 | - | |
| Dec 1, 1983 | Dec 31, 1983 | Other | No | No | - | - | - | Archived | Dec 31, 1983 | - | |
| Nov 1, 1983 | Nov 30, 1983 | Other | No | No | - | - | - | Archived | Nov 30, 1983 | - | |
| Oct 1, 1983 | Oct 31, 1983 | Other | No | No | - | - | - | Archived | Oct 31, 1983 | - | |
| 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 | - | |
| Jun 1, 1983 | Jun 30, 1983 | Other | No | No | - | - | - | Archived | Jun 30, 1983 | - | |
| May 1, 1983 | May 31, 1983 | Other | No | No | - | - | - | Archived | May 31, 1983 | - | |
| Apr 1, 1983 | Apr 30, 1983 | Other | No | No | - | - | - | Archived | Apr 30, 1983 | - | |
| Mar 1, 1983 | Mar 31, 1983 | Other | No | No | - | - | - | Archived | Mar 31, 1983 | - | |
| Feb 1, 1983 | Feb 28, 1983 | Other | No | No | - | - | - | Archived | Feb 28, 1983 | - | |
| Jan 1, 1983 | Jan 31, 1983 | Other | No | No | - | - | - | Archived | Jan 31, 1983 | - | |
| Dec 1, 1982 | Dec 31, 1982 | Other | No | No | - | - | - | Archived | Dec 31, 1982 | - | |
| Nov 1, 1982 | Nov 30, 1982 | Other | No | No | - | - | - | Archived | Nov 30, 1982 | - | |
| Oct 1, 1982 | Oct 31, 1982 | Other | No | No | - | - | - | Archived | Oct 31, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 15 pCi/L | - | Archived | Sep 30, 1982 | - | |
| Oct 30, 1980 | Oct 29, 1981 | MR | No | Yes | - | 15 pCi/L | - | Archived | Oct 29, 1981 | - |
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.