Tap Truth EPA drinking water records, in plain English

Public water system record

Llano Mutual Water Company

Serves an area of Los Angeles County, CA · 245 people served

Federal records show 1 health-based violation and 1 monitoring/reporting issue for Llano Mutual Water Company in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • CA1900303
  • LLANO
  • CA
  • 245 served

System profile

Source water Purchased groundwater
ZIP 93544
EPA system ID CA1900303

Verify this system on EPA ECHO →

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

Key facts

  • Llano Mutual Water Company buys its water from Llano Del Rio Water Company.
  • Most recent formal enforcement: compliance order (no penalty) by California, December 2011.
  • Record on file since 2011, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 81 service lines.

Check whether Llano Mutual Water Company serves your address

Address suggestions by Mapbox

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
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Active 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 REVISIONS
RPT
 Oct 17, 2024 Active

Full record since 2011

EPA's records for Llano Mutual Water Company go back to 2011. Before October 19, 2016 they list no health-based violations and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 0 6
2020s 1 1

Enforcement actions

California regulators took 2 formal enforcement actions against Llano Mutual Water Company in 2011. The most recent was a compliance order (no penalty) in December 2011.

Date By Action Violations covered
Dec 8, 2011 California Compliance order (no penalty) 4 violations: Total Coliform
Apr 28, 2011 California Compliance order (no penalty) 2 violations: Total Coliform

What the violations mean

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Llano Mutual Water Company buys its water from Llano Del Rio Water Company. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Llano 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 Llano 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