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Public water system record

City of Milpitas

Serves Milpitas, Santa Clara County, CA · 81,773 people served

Federal records show no health-based violations and 2 monitoring/reporting issues for City of Milpitas in the last ten years.

  • CA4310005
  • MILPITAS
  • CA
  • 81,773 served

System profile

Source water Purchased surface water
ZIP 95035
EPA system ID CA4310005

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • City of Milpitas buys its water from Santa Clara Valley Water District, San Francisco Regional Water System and Sfpuc City Distribution Division.
  • Most recent formal enforcement: compliance order (no penalty) by California, June 2025.
  • Record on file since 1992, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 16,537 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016.

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Revised Total Coliform Rule
Monitoring violation
 May 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2023 Resolved

Full record since 1992

EPA's records for City of Milpitas go back to 1992. Before October 19, 2016 they list 2 health-based violations (1 resolved, 1 archived by EPA without a recorded fix) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 2 1
2020s 0 2

Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began March 1995, Archived.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Surface Water Treatment Rule
Treatment technique failure
 Mar 1, 1995 Archived
Surface Water Treatment Rule
Treatment technique failure
 Mar 1, 1992 Resolved

Enforcement actions

California regulators took 5 formal enforcement actions against City of Milpitas between 1992 and 2025. The most recent was a compliance order (no penalty) in June 2025.

Date By Action Violations covered
Jun 10, 2025 California Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Mar 13, 2023 California Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Apr 2, 1997 California Compliance order (no penalty) 1 violation (1 health-based): Surface Water Treatment Rule
Apr 9, 1993 California Compliance order (no penalty) 1 violation (1 health-based): Surface Water Treatment Rule
Apr 3, 1992 California Compliance order (no penalty) 1 violation (1 health-based): Surface Water Treatment Rule

Where the water comes from

City of Milpitas buys its water from Santa Clara Valley Water District, San Francisco Regional Water System and Sfpuc City Distribution Division. EPA also lists 1 well, all for emergency, seasonal or other part-time use. 1 other community water system buys water from City of Milpitas. 1 other public water system has an emergency connection to City of Milpitas.

Buys water from

Community systems that buy water from it

Annual water quality report

City of Milpitas must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.

Certified drinking water labs by state EPA guidance for private wells