CITY OF MOUNTAIN VIEW
California — Community Water System — PWSID: CA4310007
System Information
| PWSID | CA4310007 |
| System Name | CITY OF MOUNTAIN VIEW |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | MOUNTAIN VIEW |
| ZIP Code | 94043 |
| Address | 231 North Whisman Road |
| Organization | AU, LISA |
| Phone | 650-903-6140 |
Population & Service
| Population Served | 81,501 |
| Service Connections | 17,907 |
Drinking Water Violations (16)
This water system has 16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar 1, 2015 | Mar 31, 2015 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 2015 | Surface Water Treatment Rule |
| Mar 1, 2015 | Mar 31, 2015 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 2015 | Surface Water Treatment Rule |
| Jul 1, 2013 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Oct 16, 2017 | Ground Water Rule |
| May 1, 2001 | May 31, 2001 | Fluoride | MR | No | No | — | 4.0 mg/L | — | Resolved | May 31, 2001 | Inorganic Chemicals |
| May 1, 2001 | May 31, 2001 | Fluoride | MR | No | No | — | 4.0 mg/L | — | Resolved | May 31, 2001 | Inorganic Chemicals |
| Mar 1, 2001 | Mar 31, 2001 | Fluoride | MR | No | No | — | 4.0 mg/L | — | Resolved | Mar 31, 2001 | Inorganic Chemicals |
| Mar 1, 2001 | Mar 31, 2001 | Fluoride | MR | No | No | — | 4.0 mg/L | — | Resolved | Mar 31, 2001 | Inorganic Chemicals |
| Mar 1, 1995 | Mar 31, 1995 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1995 | Surface Water Treatment Rule |
| Mar 1, 1995 | Mar 31, 1995 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1995 | Surface Water Treatment Rule |
| Mar 1, 1992 | Mar 31, 1992 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | Surface Water Treatment Rule |
| Mar 1, 1992 | Mar 31, 1992 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | Surface Water Treatment Rule |
| Mar 1, 1992 | Mar 31, 1992 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | Surface Water Treatment Rule |
| Mar 1, 1992 | Mar 31, 1992 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | Surface Water Treatment Rule |
| Mar 1, 1992 | Mar 31, 1992 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | Surface Water Treatment Rule |
| Mar 1, 1992 | Mar 31, 1992 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 1992 | Surface Water Treatment Rule |
| Nov 1, 1988 | Nov 30, 1988 | Other | No | No | — | — | — | Archived | Nov 30, 1988 | Miscellaneous Other Rules |
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.