Tap Truth EPA drinking water records, in plain English

Public water system record

Lancaster Park Mobile Home Park

Serves an area of Los Angeles County, CA · 60 people served

Federal records show 30 health-based violations and 3 monitoring/reporting issues for Lancaster Park Mobile Home Park in the last ten years. The most serious issue in this window was a Arsenic violation that EPA lists as archived, not resolved.

  • CA1900038
  • LANCASTER
  • CA
  • 60 served

System profile

Source water Groundwater
ZIP 93584
EPA system ID CA1900038

Verify this system on EPA ECHO →

Health-based violations, last 10 years
30
Resolved
0
Unresolved
0
Archived by EPA
30
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Lancaster Park Mobile Home Park draws water from 1 well.
  • Highest measured level in the last 10 years: Arsenic, 41 µg/L, federal limit 10 µg/L (4.1 times the limit), 2017.
  • Most recent formal enforcement: compliance order (no penalty) by EPA, June 2019.
  • Record on file since 1984, with 10 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 21 service lines.

Check whether Lancaster Park Mobile Home Park serves your address

Address suggestions by Mapbox

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
Arsenic
Contaminant limit exceeded
Measured 22 µg/L, federal limit 10 µg/L (2.2 times the limit)
 330 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 26 µg/L, federal limit 10 µg/L (2.6 times the limit)
 330 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 27 µg/L, federal limit 10 µg/L (2.7 times the limit)
 330 Jan 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 25 µg/L, federal limit 10 µg/L (2.5 times the limit)
 330 Oct 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 32 µg/L, federal limit 10 µg/L (3.2 times the limit)
 330 Jul 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 26 µg/L, federal limit 10 µg/L (2.6 times the limit)
 330 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 26 µg/L, federal limit 10 µg/L (2.6 times the limit)
 330 Jan 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
 330 Oct 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 18 µg/L, federal limit 10 µg/L (1.8 times the limit)
 330 Jul 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 18 µg/L, federal limit 10 µg/L (1.8 times the limit)
 330 Apr 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 20 µg/L, federal limit 10 µg/L (2 times the limit)
 330 Jan 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 20 µg/L, federal limit 10 µg/L (2 times the limit)
 330 Dec 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 22 µg/L, federal limit 10 µg/L (2.2 times the limit)
 330 Jul 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 23 µg/L, federal limit 10 µg/L (2.3 times the limit)
 330 Apr 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 23 µg/L, federal limit 10 µg/L (2.3 times the limit)
 330 Jan 1, 2022 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
 330 Oct 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 22 µg/L, federal limit 10 µg/L (2.2 times the limit)
 330 Jul 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 22 µg/L, federal limit 10 µg/L (2.2 times the limit)
 330 Apr 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 17 µg/L, federal limit 10 µg/L (1.7 times the limit)
 330 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 22 µg/L, federal limit 10 µg/L (2.2 times the limit)
 330 Oct 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 21 µg/L, federal limit 10 µg/L (2.1 times the limit)
 330 Jul 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 23 µg/L, federal limit 10 µg/L (2.3 times the limit)
 330 Apr 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 26 µg/L, federal limit 10 µg/L (2.6 times the limit)
 330 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 15 µg/L, federal limit 10 µg/L (1.5 times the limit)
 330 Jul 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 17 µg/L, federal limit 10 µg/L (1.7 times the limit)
 330 Apr 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 14 µg/L, federal limit 10 µg/L (1.4 times the limit)
 330 Jan 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 41 µg/L, federal limit 10 µg/L (4.1 times the limit)
 330 Oct 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 19 µg/L, federal limit 10 µg/L (1.9 times the limit)
 330 Jul 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 10 µg/L, federal limit 10 µg/L (at or just above the limit)
 330 Apr 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 16 µg/L, federal limit 10 µg/L (1.6 times the limit)
 330 Jan 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 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
Monitoring and reporting
 Jan 1, 2018 Resolved
Lead and Copper Rule
OTHER
 Jun 1, 2017 Resolved
Nitrate
Monitoring and reporting
 Jan 1, 2017 Resolved

Full record since 1984

EPA's records for Lancaster Park Mobile Home Park go back to 1984. Before October 19, 2016 they list 10 health-based violations (10 archived by EPA without a recorded fix) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1980s 0 1
2010 to October 18, 2016 10 0
October 19, 2016 to 2019 7 3
2020s 23 0

Most recent health-based violation before October 19, 2016: Arsenic, began April 2016, Archived.

Show all 10 health-based violations before October 19, 2016
Contaminant Start date Status
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2016 Archived
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Jan 1, 2016 Archived
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Oct 1, 2015 Archived
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jul 1, 2015 Archived
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2015 Archived
Arsenic
Contaminant limit exceeded
Measured 0.016 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 Jan 1, 2015 Archived
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Oct 1, 2014 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0145 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2014 Archived
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jan 1, 2014 Archived
Total Coliform
Contaminant limit exceeded
 Oct 1, 2013 Archived

Enforcement actions

California regulators and EPA took 5 formal enforcement actions against Lancaster Park Mobile Home Park and issued 1 boil water order between 2014 and 2019. The most recent was a compliance order (no penalty) in June 2019.

Date By Action Violations covered
Jun 14, 2019 EPA Compliance order (no penalty) 34 violations (34 health-based): Arsenic
Jan 29, 2019 California Compliance order (no penalty) 2 violations: Lead and Copper Rule
Jul 12, 2018 California Compliance order (no penalty) 1 violation: Nitrate
Mar 12, 2018 California Compliance order (no penalty) 1 violation: Lead and Copper Rule
Apr 9, 2015 California Compliance order (no penalty) 39 violations (39 health-based): Arsenic
Nov 26, 2014 California Boil water order 1 violation (1 health-based): Total Coliform

What the violations mean

Arsenic

30 incidents

Arsenic exceeded the federal limit

Long-term arsenic exposure is linked to cancer and cardiovascular effects

Where the water comes from

Lancaster Park Mobile Home Park draws water from 1 well.

Annual water quality report

Lancaster Park Mobile Home Park 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 Lancaster Park Mobile Home Park 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