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Public water system record

Yosemite Terrace Estates

Serves Greeley Hill, Mariposa County, CA · 130 people served

Federal records show 1 health-based violation and 3 monitoring/reporting issues for Yosemite Terrace Estates in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • CA2210925
  • GREELEY HILL
  • CA
  • 130 served

System profile

Source water Groundwater
ZIP 95311
EPA system ID CA2210925

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
3

Key facts

  • Yosemite Terrace Estates draws water from 1 well.
  • Most recent formal enforcement: compliance order (no penalty) by California, October 2025.
  • Record on file since 1993, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 51 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
Revised Total Coliform Rule
Monitoring violation
 Jun 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Revised Total Coliform Rule
Monitoring violation
 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Active

Full record since 1993

EPA's records for Yosemite Terrace Estates go back to 1993. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 7 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 2
2000s 0 5
2020s 1 3

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

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

Enforcement actions

California regulators took 5 formal enforcement actions against Yosemite Terrace Estates between 2004 and 2025. The most recent was a compliance order (no penalty) in October 2025.

Date By Action Violations covered
Oct 29, 2025 California Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Dec 31, 2007 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Nov 13, 2007 California Compliance order (no penalty) 1 violation: Consumer Confidence Rule
Dec 28, 2005 California Compliance order (no penalty) 2 violations: Lead and Copper Rule
Jul 15, 2004 California Compliance order (no penalty) 1 violation: Lead and Copper Rule

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

Yosemite Terrace Estates draws water from 1 well.

Annual water quality report

Yosemite Terrace Estates 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 Yosemite Terrace Estates 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