Public water system record

Tierra Bonita Mutual Water

Serves an area of Los Angeles County, CA · 75 people served

Federal records show no health-based violations and 3 monitoring/reporting issues for Tierra Bonita Mutual Water in the last ten years. At least one of these issues remains unresolved.

  • CA1900154
  • LANCASTER
  • CA
  • 75 served

System profile

Source water Groundwater
ZIP 93535
EPA system ID CA1900154

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Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Tierra Bonita Mutual Water draws water from 1 well.
  • Most recent formal enforcement: compliance order (no penalty) by California, December 2019.
  • Record on file since 1993, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 23 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
Lead and Copper Rule
Monitoring and reporting
Oct 1, 2019 Resolved
Nitrate
Monitoring and reporting
Jan 1, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
Jul 1, 1993 Active

Full record since 1993

EPA's records for Tierra Bonita Mutual Water go back to 1993. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2010 to October 18, 2016 2 0
October 19, 2016 to 2019 0 2

Most recent health-based violation before October 19, 2016: Total Coliform, began August 2011, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Aug 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2011 Resolved

Enforcement actions

California regulators took 3 formal enforcement actions against Tierra Bonita Mutual Water between 2011 and 2019. The most recent was a compliance order (no penalty) in December 2019.

Date By Action Violations covered
Dec 14, 2019 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Jul 12, 2018 California Compliance order (no penalty) 1 violation: Nitrate
Nov 7, 2011 California Compliance order (no penalty) 2 violations (2 health-based): Total Coliform

Where the water comes from

Tierra Bonita Mutual Water draws water from 1 well.

Annual water quality report

Tierra Bonita Mutual Water 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 Tierra Bonita Mutual Water 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.