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Public water system record

San Gabriel Valley Water Co.-El Monte

Serves Hacienda Heights, El Monte, Industry and 10 more places, Los Angeles County, CA · 248,000 people served

Federal records show 2 health-based violations and no monitoring/reporting issues for San Gabriel Valley Water Co.-El Monte in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • CA1910039
  • EL MONTE
  • CA
  • 248,000 served

System profile

Source water Groundwater
ZIP 91734
EPA system ID CA1910039

Verify this system on EPA ECHO →

Health-based violations, last 10 years
2
Resolved
2
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • San Gabriel Valley Water Co.-El Monte draws water from 30 wells.
  • Most recent formal enforcement: compliance order (no penalty) by California, October 2018.
  • Record on file since 1987, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 48,369 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
Groundwater Rule
Treatment technique failure
 140 Jun 1, 2019 Resolved No
Groundwater Rule
Treatment technique failure
 140 Sep 1, 2018 Resolved No

Full record since 1987

EPA's records for San Gabriel Valley Water Co.-El Monte go back to 1987. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1980s 0 1
1990s 1 0
October 19, 2016 to 2019 2 0

Most recent health-based violation before October 19, 2016: Total Coliform, began December 1995, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Dec 1, 1995 Resolved

Enforcement actions

California regulators took 1 formal enforcement action against San Gabriel Valley Water Co.-El Monte in 2018. The most recent was a compliance order (no penalty) in October 2018.

Date By Action Violations covered
Oct 22, 2018 California Compliance order (no penalty) 1 violation (1 health-based): Groundwater Rule

What the violations mean

Groundwater Rule

2 incidents

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

Where the water comes from

San Gabriel Valley Water Co.-El Monte draws water from 30 wells. It also has emergency connections to Pico Rivera - City, Water Dept., Suburban Water Systems-San Jose, Santa Fe Springs - City, Water Dept., Whittier-City, Water Dept., Valley County Water Dist., San Gabriel Valley Water Co-Montebello 2 and City of Arcadia. 8 other community water systems buy water from San Gabriel Valley Water Co.-El Monte.

Emergency or part-time connections to

Annual water quality report

San Gabriel Valley Water Co.-El Monte 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