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Public water system record

Monterey Park-City, Water Dept.

Serves Monterey Park, Los Angeles County, CA · 62,183 people served

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

  • CA1910092
  • MONTEREY PARK
  • CA
  • 62,183 served

System profile

Source water Groundwater
ZIP 91754
EPA system ID CA1910092

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

  • Monterey Park-City, Water Dept. draws water from 8 wells.
  • Most recent formal enforcement: compliance order (no penalty) by California, June 2005.
  • Record on file since 2005, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 12,178 unknown out of 13,590 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
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 2005

EPA's records for Monterey Park-City, Water Dept. go back to 2005. Before October 19, 2016 they list no health-based violations and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
2000s 0 1
2020s 1 1

Enforcement actions

California regulators took 1 formal enforcement action against Monterey Park-City, Water Dept. in 2005. The most recent was a compliance order (no penalty) in June 2005.

Date By Action Violations covered
Jun 9, 2005 California Compliance order (no penalty) 1 violation: 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

Monterey Park-City, Water Dept. draws water from 8 wells. It also buys water from San Gabriel Valley Water Co.-El Monte.

Buys water from

Annual water quality report

Monterey Park-City, Water Dept. 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