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Public water system record

Land Projects Mutual Water Co.

Serves an area of Los Angeles County, CA · 2,800 people served

Federal records show 36 health-based violations and 26 monitoring/reporting issues for Land Projects Mutual Water Co. in the last ten years. The most serious issue in this window was a Arsenic violation that EPA lists as archived, not resolved.

  • CA1910246
  • LANCASTER
  • CA
  • 2,800 served

System profile

Source water Groundwater
ZIP 93536
EPA system ID CA1910246

Verify this system on EPA ECHO →

Health-based violations, last 10 years
36
Resolved
1
Unresolved
0
Archived by EPA
35
Any acute record
No
Monitoring issues, last 10 years
26

Key facts

  • Land Projects Mutual Water Co. draws water from 3 wells.
  • Highest measured level in the last 10 years: Arsenic, 0.0195 mg/L, federal limit 0.01 mg/L (2 times the limit), 2023.
  • Most recent formal enforcement: compliance order (no penalty) by California, July 2025.
  • Record on file since 1993, with 42 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 534 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
Arsenic
Contaminant limit exceeded
Measured 18.38 µg/L, federal limit 10 µg/L (1.8 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 14.88 µg/L, federal limit 10 µg/L (1.5 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 15.88 µg/L, federal limit 10 µg/L (1.6 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 16.13 µg/L, federal limit 10 µg/L (1.6 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 16.5 µg/L, federal limit 10 µg/L (1.7 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 16 µg/L, federal limit 10 µg/L (1.6 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
Measured 0.01675 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
 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 0.0195 mg/L, federal limit 0.01 mg/L (2 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 0.019 mg/L, federal limit 0.01 mg/L (1.9 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 0.01875 mg/L, federal limit 0.01 mg/L (1.9 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 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
 330 Oct 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 0.01475 mg/L, federal limit 0.01 mg/L (1.5 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
Chlorine
Disinfectant residual limit exceeded
 210 Jul 1, 2022 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.0145 mg/L, federal limit 0.01 mg/L (1.5 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 0.014 mg/L, federal limit 0.01 mg/L (1.4 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
Measured 0.01653 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
 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 0.01473 mg/L, federal limit 0.01 mg/L (1.5 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 0.01423 mg/L, federal limit 0.01 mg/L (1.4 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 0.01495 mg/L, federal limit 0.01 mg/L (1.5 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 0.01288 mg/L, federal limit 0.01 mg/L (1.3 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 0.01338 mg/L, federal limit 0.01 mg/L (1.3 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 0.0132 mg/L, federal limit 0.01 mg/L (1.3 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 0.0135 mg/L, federal limit 0.01 mg/L (1.4 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 0.0137 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 330 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 330 Jul 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 0.0165 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
 330 Apr 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 0.0157 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 330 Jan 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 0.0153 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 330 Oct 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 0.0143 mg/L, federal limit 0.01 mg/L (1.4 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 0.014 mg/L, federal limit 0.01 mg/L (1.4 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 0.0135 mg/L, federal limit 0.01 mg/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 0.0113 mg/L, federal limit 0.01 mg/L (1.1 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 0.01467 mg/L, federal limit 0.01 mg/L (1.5 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 0.0145 mg/L, federal limit 0.01 mg/L (1.5 times 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 0.01525 mg/L, federal limit 0.01 mg/L (1.5 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
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 330 Oct 1, 2016 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
Revised Total Coliform Rule
Monitoring violation
 Jul 1, 2022 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jul 1, 2022 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jul 1, 2022 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jul 1, 2021 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jul 1, 2021 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jul 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jun 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 May 1, 2020 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Nov 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Aug 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jul 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jun 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 May 1, 2019 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Apr 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Mar 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2019 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 May 1, 2017 Resolved

Full record since 1993

EPA's records for Land Projects Mutual Water Co. go back to 1993. Before October 19, 2016 they list 42 health-based violations (6 resolved, 36 archived by EPA without a recorded fix) and 69 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 4 2
2000s 8 2
2010 to October 18, 2016 30 65
October 19, 2016 to 2019 12 14
2020s 23 12

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

Show all 42 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)
 Oct 1, 2016 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01475 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Jul 1, 2016 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0145 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2016 Archived
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jan 1, 2016 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0137 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Oct 1, 2015 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0135 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jul 1, 2015 Archived
Total Coliform
Contaminant limit exceeded
 May 1, 2015 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.0135 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Apr 1, 2015 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0125 mg/L, federal limit 0.01 mg/L (1.3 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 0.01425 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jul 1, 2014 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01475 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2014 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01494 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Jan 1, 2014 Archived
Total Coliform
Contaminant limit exceeded
 Nov 1, 2013 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.01544 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Oct 1, 2013 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01644 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 Jul 1, 2013 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01769 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
 Apr 1, 2013 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01825 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
 Jan 1, 2013 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0175 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
 Oct 1, 2012 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01625 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 Jul 1, 2012 Archived
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2012 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01325 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Jan 1, 2012 Archived
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Oct 1, 2011 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01525 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Jul 1, 2011 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01825 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
 Apr 1, 2011 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0193 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
 Jan 1, 2011 Archived
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
 Oct 1, 2010 Archived
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
 Jul 1, 2010 Archived
Arsenic
Contaminant limit exceeded
Measured 0.0145 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2010 Archived
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jan 1, 2010 Archived
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
 Oct 1, 2009 Archived
Arsenic
Contaminant limit exceeded
Measured 0.018 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
 Jul 1, 2009 Archived
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
 Apr 1, 2009 Archived
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
 Jan 1, 2009 Archived
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Oct 1, 2008 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01567 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 Jul 1, 2008 Archived
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Apr 1, 2008 Archived
Arsenic
Contaminant limit exceeded
Measured 0.01675 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
 Jan 1, 2008 Archived
Total Coliform
Contaminant limit exceeded
 Mar 1, 1995 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 1994 Resolved
Total Coliform
Contaminant limit exceeded
 Apr 1, 1994 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 1993 Resolved

Enforcement actions

California regulators and EPA took 23 formal enforcement actions against Land Projects Mutual Water Co. between 1994 and 2025, filed as 36 records in EPA's data. The most recent was a compliance order (no penalty) in July 2025.

Date By Action Violations covered
Jul 24, 2025 California Compliance order (no penalty) 5 violations (5 health-based): Arsenic
Sep 5, 2023 EPA Penalty complaint settled by consent order or decree 66 violations (65 health-based): Arsenic
Jan 27, 2023 California Compliance order (no penalty) 3 violations (1 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Chlorine
Jan 11, 2023 California Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Nov 30, 2021 California Compliance order (no penalty) 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Nov 3, 2020 California Compliance order with a penalty 2 violations: Revised Total Coliform Rule, Lead and Copper Rule
Sep 1, 2020 California Compliance order (no penalty) 13 violations: Revised Total Coliform Rule
May 1, 2020 California Compliance order (no penalty) 2 violations: Revised Total Coliform Rule, Chlorine
Jun 11, 2019 California Compliance order (no penalty) 2 violations: Revised Total Coliform Rule, Chlorine
Jul 3, 2017 California Compliance order (no penalty) 1 violation: Consumer Confidence Rule
Jun 30, 2017 California Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Mar 22, 2017 EPA Compliance order (no penalty) 65 violations (65 health-based): Arsenic
Aug 19, 2016 California Compliance order (no penalty) 65 violations: ETHYLENE DIBROMIDE, Radium-226, Radium-228, Mercury, Barium
Oct 22, 2015 California Compliance order (no penalty) 19 violations (19 health-based): Arsenic
Jul 21, 2015 California Compliance order (no penalty) 2 violations (2 health-based): Arsenic
Jun 2, 2015 California Compliance order (no penalty) 1 violation (1 health-based): Total Coliform
Feb 2, 2015 California Compliance order (no penalty) 15 violations (15 health-based): Arsenic
Dec 20, 2013 California Compliance order (no penalty) 1 violation (1 health-based): Total Coliform
Apr 18, 2012 California Compliance order (no penalty) 12 violations (12 health-based): Arsenic
Apr 30, 2009 California Compliance order (no penalty) 1 violation: Total Coliform
Jan 6, 2009 California Compliance order (no penalty) 20 violations (20 health-based): Arsenic
Aug 3, 2000 California Compliance order (no penalty) 1 violation: Total Coliform
Oct 21, 1994 California Compliance order (no penalty) 3 violations (2 health-based): Total Coliform

What the violations mean

Arsenic

35 incidents

Arsenic exceeded the federal limit

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

Chlorine

1 incident

Chlorine levels were above the federal maximum residual disinfectant level.

The utility had to notify customers about this violation.

Where the water comes from

Land Projects Mutual Water Co. draws water from 3 wells.

Annual water quality report

Land Projects Mutual Water Co. 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