LANCASTER, CA · Los Angeles County

LAND PROJECTS MUTUAL WATER CO. Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA1910246
System type: Community Water System
Population served: 2,800
Service connections: 548
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2024 – March 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2023 – September 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2023 – June 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2023 – March 31, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2022 – December 31, 2022
Archived
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2022 – September 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2022 – September 30, 2022
Archived
Non-Acute MRDL
Health-based
Chlorine
July 1, 2022 – September 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2022 – September 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2022 – March 31, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2021 – December 31, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2021 – September 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2021 – March 31, 2021
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2020 – December 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2020 – December 31, 2020
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2020 – August 31, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2020 – July 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2020 – September 30, 2020
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2020 – June 30, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2020 – May 31, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2020 – June 30, 2020
Archived
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2020 – May 1, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2020 – February 29, 2020
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2020 – March 31, 2020
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2019 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2019 – December 31, 2019
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2019 – September 30, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2019 – August 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2019 – September 30, 2019
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2019 – July 31, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2019 – June 30, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2019 – May 31, 2019
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2019 – June 30, 2019
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2019 – March 31, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2019 – February 28, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2019 – January 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2019 – March 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2018 – December 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2018 – September 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2018 – June 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2017 – December 31, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2017 – June 30, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2016 – December 31, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2016 – September 30, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2016 – March 31, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2015 – June 30, 2015
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Cadmium
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Nickel
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Antimony, Total
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Thallium, Total
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Selenium
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Benzene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Toluene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Endrin
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Methoxychlor
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Endothall
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Glyphosate
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Simazine
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
LASSO
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Radium-226
July 1, 2014 – July 1, 2016
Resolved
Monitoring, Regular
—
Radium-228
July 1, 2014 – July 1, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2014 – March 31, 2014
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2013 – September 30, 2013
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2012 – March 31, 2012
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2011 – June 30, 2011
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2010 – September 30, 2010
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2010 – June 30, 2010
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2010 – March 31, 2010
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2009 – December 31, 2009
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2009 – September 30, 2009
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2009 – February 28, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2009 – March 31, 2009
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2008 – September 30, 2008
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2008 – March 31, 2008
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1994 – August 31, 1994
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1994 – April 30, 1994
Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2022 – December 31, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2022 – September 30, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2022 – September 30, 2022	Non-Acute MRDL	Chlorine	Health-based	Resolved
July 1, 2022 – September 30, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
December 1, 2020 – December 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2020 – August 31, 2021	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2020 – July 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
June 1, 2020 – June 30, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 1, 2020 – May 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2020 – May 1, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
February 1, 2020 – February 29, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
December 1, 2019 – December 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
September 1, 2019 – September 30, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2019 – August 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2019 – July 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2019 – June 30, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 1, 2019 – May 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2019 – June 30, 2019	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
March 1, 2019 – March 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
February 1, 2019 – February 28, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2019 – January 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2017 – December 31, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2017 – June 30, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2014 – July 1, 2016	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Cadmium	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Nickel	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Antimony, Total	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Thallium, Total	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Selenium	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Benzene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Toluene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Endrin	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Methoxychlor	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Endothall	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Glyphosate	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Simazine	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	LASSO	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Radium-226	—	Resolved
July 1, 2014 – July 1, 2016	Monitoring, Regular	Radium-228	—	Resolved
January 1, 2014 – March 31, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
February 1, 2009 – February 28, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
August 1, 1994 – August 31, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 1994 – April 30, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

July 24, 2025State Administrative/Compliance Order without penalty issued5 linked violations
August 1, 2023State Compliance achieved2 linked violations
January 27, 2023State Administrative/Compliance Order without penalty issued3 linked violations
January 11, 2023State Administrative/Compliance Order without penalty issued1 linked violation
November 16, 2022State Compliance achieved3 linked violations
August 1, 2022State Compliance achieved1 linked violation
November 30, 2021State Administrative/Compliance Order without penalty issued2 linked violations
August 31, 2021State Compliance achieved1 linked violation
January 1, 2021State Compliance achieved1 linked violation
November 3, 2020State Administrative/Compliance Order with penalty issuedgeneral compliance action — not tied to a specific violation on record
November 3, 2020State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
November 3, 2020State Administrative/Compliance Order with penalty issued2 linked violations
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued2 linked violations
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued3 linked violations
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issued1 linked violation
September 1, 2020State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
August 1, 2020State Compliance achieved1 linked violation
August 1, 2020State Compliance achieved1 linked violation
August 1, 2020State Compliance achieved1 linked violation
May 1, 2020State Compliance achieved2 linked violations
January 1, 2020State Compliance achieved1 linked violation
January 1, 2020State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved2 linked violations
October 1, 2019State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved1 linked violation
October 1, 2019State Compliance achieved2 linked violations
July 3, 2017State Administrative/Compliance Order without penalty issued2 linked violations
March 22, 2017Federal Final Administrative Order issued65 linked violations
August 19, 2016State Compliance achieved68 linked violations
October 22, 2015State Administrative/Compliance Order without penalty issued22 linked violations
February 2, 2015State Administrative/Compliance Order without penalty issued1 linked violation
February 2, 2015State Administrative/Compliance Order without penalty issued14 linked violations
December 20, 2013State Administrative/Compliance Order without penalty issued35 linked violations
April 18, 2012State Administrative/Compliance Order without penalty issued12 linked violations
May 11, 2009State Compliance achieved1 linked violation
April 30, 2009State Administrative/Compliance Order without penalty issued1 linked violation
January 6, 2009State Administrative/Compliance Order without penalty issued20 linked violations
May 23, 2008State Violation/Reminder Notice2 linked violations
February 16, 2006State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
August 3, 2000State Administrative/Compliance Order without penalty issued6 linked violations
May 9, 1995State Compliance achieved1 linked violation
May 9, 1995State Formal Notice of Violation issued2 linked violations
October 21, 1994State Administrative/Compliance Order without penalty issued3 linked violations
October 21, 1994State Formal Notice of Violation issued1 linked violation
October 21, 1994State Compliance achieved1 linked violation
June 20, 1994State Compliance achieved1 linked violation

Contact

HOUGHTON, JOHN

661-948-2550

LANCASTER, CA 93536