Public water system record

Vista Hills Mutual Water Company

Serves an area of Santa Barbara County, CA · 75 people served

Federal records show 1 health-based violation and 4 monitoring/reporting issues for Vista Hills Mutual Water Company in the last ten years. The most serious issue in this window was a resolved Selenium violation.

  • CA4200848
  • LOMPOC
  • CA
  • 75 served

System profile

Source water Groundwater
ZIP 93436
EPA system ID CA4200848

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
4

Key facts

  • Vista Hills Mutual Water Company draws water from 3 wells.
  • Highest measured level in the last 10 years: Selenium, 67.5 µg/L, federal limit 50 µg/L (1.4 times the limit), 2025.
  • Most recent formal enforcement: administrative penalty by California, June 2025.
  • Record on file since 1993, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 21 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
Selenium
Contaminant limit exceeded
Measured 67.5 µg/L, federal limit 50 µg/L (1.4 times the limit)
330 Jan 1, 2025 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
Oct 1, 2023 Active
Enforcement action in place
Lead and Copper Rule
Monitoring and reporting
Jun 1, 2018 Resolved
Nitrate
Monitoring and reporting
Jan 1, 2018 Resolved
Lead and Copper Rule
Monitoring and reporting
Oct 1, 2017 Resolved

Full record since 1993

EPA's records for Vista Hills Mutual Water Company go back to 1993. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 4 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 2 1
2000s 2 3
October 19, 2016 to 2019 0 3
2020s 1 1

Most recent health-based violation before October 19, 2016: Total Coliform, began June 2004, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Jun 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 2000 Resolved
Total Coliform
Contaminant limit exceeded
May 1, 1999 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 1997 Resolved

Enforcement actions

California regulators took 4 formal enforcement actions against Vista Hills Mutual Water Company between 2019 and 2025. The most recent was an administrative penalty in June 2025.

Date By Action Violations covered
Jun 13, 2025 California Administrative penalty 1 violation: Lead and Copper Rule
Feb 13, 2025 California Compliance order (no penalty) 1 violation (1 health-based): Selenium
Mar 28, 2019 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Mar 4, 2019 California Compliance order (no penalty) 1 violation: Nitrate

What the violations mean

Selenium

1 incident

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

The utility had to notify customers about this violation.

Where the water comes from

Vista Hills Mutual Water Company draws water from 3 wells.

Annual water quality report

Vista Hills 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 Vista Hills 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.