Public water system record

Lake Hemet MWD

Serves Valle Vista, East Hemet, Hemet and 1 more place, Riverside County, CA · 52,913 people served

Federal records show 1 health-based violation and 1 monitoring/reporting issue for Lake Hemet MWD in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.

  • CA3310022
  • HEMET
  • CA
  • 52,913 served

System profile

Source water Groundwater
ZIP 92544
EPA system ID CA3310022

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
1

Key facts

  • Lake Hemet MWD draws water from 11 wells.
  • Most recent formal enforcement: compliance order (no penalty) by California, August 2022.
  • Record on file since 2002, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 9,685 unknown out of 14,421 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
Revised Total Coliform Rule
Contaminant limit exceeded
110 Jun 1, 2022 Resolved Yes

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
E. coli
Monitoring and reporting
Jul 1, 2022 Resolved

Full record since 2002

EPA's records for Lake Hemet MWD go back to 2002. 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
2000s 1 1
2020s 1 1

Most recent health-based violation before October 19, 2016: Total Coliform, began October 2002, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Oct 1, 2002 Resolved

Enforcement actions

California regulators took 1 formal enforcement action against Lake Hemet MWD in 2022. The most recent was a compliance order (no penalty) in August 2022.

Date By Action Violations covered
Aug 15, 2022 California Compliance order (no penalty) 2 violations (1 health-based): Revised Total Coliform Rule, E. coli

What the violations mean

Revised Total Coliform Rule

1 incident

The system did not meet a requirement of the Revised Total Coliform Rule

Coliform and E. coli rules protect against bacteria in the distribution system

Where the water comes from

Lake Hemet MWD draws water from 11 wells. It also buys water from Eastern Municipal WD. 1 other community water system buys water from Lake Hemet MWD. 1 other public water system has an emergency connection to Lake Hemet MWD.

Buys water from

Community systems that buy water from it

Annual water quality report

Lake Hemet MWD 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.