MOUNTAIN VIEW, CA · Santa Clara County
CITY OF MOUNTAIN VIEW Water System
Consumer Confidence Report status
CITY OF MOUNTAIN VIEW must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for CITY OF MOUNTAIN VIEW.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA4310007
- System type
- Community Water System
- Population served
- 81,501
- Service connections
- 17,907
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
CITY OF MOUNTAIN VIEW is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 81,501 people from surface water.
As of August 1, 2026, its federal record holds 2 entries between 1988 and 2015, all of which EPA lists as closed. Nothing has been added since 2015.
None of the 2 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Surface Water Treatment Rules and the Miscellaneous Other Rules.
Violation history
Treatment Technique (SWTR and GWR)
Health-basedSurface Water Treatment Rule
March 1, 2015 – March 31, 2015
ResolvedNotification, Public
—No contaminant on record
November 1, 1988 – November 30, 1988
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| March 1, 2015 – March 31, 2015 | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Health-based | Resolved |
| November 1, 1988 – November 30, 1988 | Notification, Public | — | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- October 16, 2017State Compliance achieved4 linked violations
- April 2, 1997State Administrative/Compliance Order without penalty issued3 linked violations
Common questions
Is CITY OF MOUNTAIN VIEW required to publish a Consumer Confidence Report?
- Yes. CITY OF MOUNTAIN VIEW is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CITY OF MOUNTAIN VIEW’s next Consumer Confidence Report due?
- CITY OF MOUNTAIN VIEW’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CITY OF MOUNTAIN VIEW have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CITY OF MOUNTAIN VIEW.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
AU, LISA
650-903-6140
MOUNTAIN VIEW, CA 94043