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Public water system record

Mesa Dunes Mobile Home Estates

Serves an area of San Luis Obispo County, CA · 600 people served

Federal records show no health-based violations and 5 monitoring/reporting issues for Mesa Dunes Mobile Home Estates in the last ten years.

  • CA4000650
  • ARROYO GRANDE
  • CA
  • 600 served

System profile

Source water Groundwater
ZIP 93420
EPA system ID CA4000650

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
5

Key facts

  • Mesa Dunes Mobile Home Estates draws water from 3 wells.
  • Most recent formal enforcement: compliance order (no penalty) by California, March 2021.
  • Record on file since 1980, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 313 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.

None since October 2016.

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
 Feb 1, 2021 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2019 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2019 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2018 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2018 Resolved

Full record since 1980

EPA's records for Mesa Dunes Mobile Home Estates go back to 1980. Before October 19, 2016 they list no health-based violations and 4 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 2
1990s 0 1
2010 to October 18, 2016 0 1
October 19, 2016 to 2019 0 4
2020s 0 1

Enforcement actions

California regulators took 4 formal enforcement actions against Mesa Dunes Mobile Home Estates between 2014 and 2021. The most recent was a compliance order (no penalty) in March 2021.

Date By Action Violations covered
Mar 30, 2021 California Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Jan 15, 2020 California Compliance order (no penalty) 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Feb 22, 2019 California Compliance order (no penalty) 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Jun 17, 2014 California Compliance order (no penalty) 1 violation: Total Coliform

Where the water comes from

Mesa Dunes Mobile Home Estates draws water from 3 wells.

Annual water quality report

Mesa Dunes Mobile Home 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.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

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