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Public water system record

Summit Mutual Water Company

Serves an area of Santa Cruz County, CA · 152 people served

Federal records show 2 health-based violations and 9 monitoring/reporting issues for Summit Mutual Water Company in the last ten years. The most serious issue in this window was a Chlorine violation that EPA lists as archived, not resolved.

  • CA4400559
  • LOS GATOS
  • CA
  • 152 served

System profile

Source water Surface water
ZIP 95031
EPA system ID CA4400559

Verify this system on EPA ECHO →

Health-based violations, last 10 years
2
Resolved
1
Unresolved
0
Archived by EPA
1
Any acute record
No
Monitoring issues, last 10 years
9

Key facts

  • Summit Mutual Water Company draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Bromate, 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit), 2022.
  • Most recent formal enforcement: compliance order (no penalty) by California, February 2023.
  • Record on file since 1980, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 55 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.

Contaminant Rule family Start date Status Acute
Chlorine
Disinfectant residual limit exceeded
 210 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Bromate
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 210 Oct 1, 2022 Resolved No

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
 Aug 1, 2022 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2022 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2021 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2021 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2021 Resolved
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Aug 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jul 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jun 1, 2017 Resolved

Full record since 1980

EPA's records for Summit Mutual Water Company go back to 1980. Before October 19, 2016 they list no health-based violations and 26 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 26
October 19, 2016 to 2019 0 4
2020s 2 5

Enforcement actions

California regulators took 4 formal enforcement actions against Summit Mutual Water Company between 2017 and 2023. The most recent was a compliance order (no penalty) in February 2023.

Date By Action Violations covered
Feb 24, 2023 California Compliance order (no penalty) 1 violation (1 health-based): Bromate
Sep 22, 2022 California Compliance order (no penalty) 4 violations: Revised Total Coliform Rule
May 21, 2021 California Compliance order (no penalty) 1 violation: Haloacetic Acids (HAA5)
Oct 19, 2017 California Compliance order (no penalty) 4 violations: Revised Total Coliform Rule

What the violations mean

Chlorine

1 incident

Chlorine levels were above the federal maximum residual disinfectant level.

The utility had to notify customers about this violation.

Bromate

1 incident

Test results for Bromate were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about this violation.

Where the water comes from

Summit Mutual Water Company draws water from 1 surface water intake.

Annual water quality report

Summit Mutual Water Company 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Summit Mutual Water Company for a copy.

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