Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA1510046
PWS Name	LOST HILLS UTILITY DISTRICT
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	2370
County Served	Kern

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	9712011	Returned to Compliance	01-OCT-2023	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	9712010	Returned to Compliance	01-AUG-2015	31-AUG-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1112027	Returned to Compliance	01-MAY-2011	31-MAY-2011	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1112026	Returned to Compliance	01-APR-2011	30-APR-2011	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	912025	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	912024	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	999001	Known	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	812023	Known	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	712020	Returned to Compliance	01-AUG-2007	31-AUG-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	712022	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	712021	Returned to Compliance	01-JAN-2007	30-MAR-2007	Yes
MR	Monitoring, Regular	Arsenic Rule	Arsenic	712019	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	612018	Returned to Compliance	01-JUL-2006	30-SEP-2006	Yes
MR	Monitoring, Regular	Arsenic Rule	Arsenic	612017	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	612016	Returned to Compliance	01-FEB-2006	28-FEB-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	512014	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	512015	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	412012	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	112013	Returned to Compliance	01-JAN-2004	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	212010	Returned to Compliance	01-SEP-2002	30-SEP-2002	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	212011	Returned to Compliance	01-JAN-2002	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	212007	Returned to Compliance	01-DEC-2001	31-DEC-2001	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	212006	Returned to Compliance	01-NOV-2001	30-NOV-2001	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	112005	Returned to Compliance	01-NOV-2000	30-NOV-2000	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	112008	Returned to Compliance	01-JAN-2000	31-DEC-2000	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	9712009	Returned to Compliance	01-JAN-1997	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9512004	Returned to Compliance	01-OCT-1994	31-OCT-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9412003	Returned to Compliance	01-MAY-1994	31-MAY-1994	Yes
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	95V0001	Returned to Compliance	01-JUL-1993	01-MAR-2000	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9312002	Returned to Compliance	01-MAY-1993	31-MAY-1993	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9312001	Returned to Compliance	01-NOV-1992	30-NOV-1992	Yes

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9512017	9712011	SOX	State Compliance achieved	03-JUL-2024	State	Sampling conducted May 2024, PN done.
9512014	212007	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	912024	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	912025	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	9712009	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	412012	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	212010	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	612016	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	212006	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512014	112008	SOX	State Compliance achieved	12-MAR-2018	State	RTC: 1997 LCR M&R S: 9/22/03, old nitrate M&Rs, ST1 S: 12/31/10 & old TCRs.
9512013	9712010	SOX	State Compliance achieved	11-FEB-2016	State	RTC: TCR MR1 August 2015 & older TCR viols
9512013	1112027	SOX	State Compliance achieved	11-FEB-2016	State	RTC: TCR MR1 August 2015 & older TCR viols
9512013	712020	SOX	State Compliance achieved	11-FEB-2016	State	RTC: TCR MR1 August 2015 & older TCR viols
9512013	1112026	SOX	State Compliance achieved	11-FEB-2016	State	RTC: TCR MR1 August 2015 & older TCR viols
812023	712021	SOX	State Compliance achieved	23-JAN-2008	State	ARSENIC TRTMNT ONLINE
812023	712019	SOX	State Compliance achieved	23-JAN-2008	State	ARSENIC TRTMNT ONLINE
812023	612018	SOX	State Compliance achieved	23-JAN-2008	State	ARSENIC TRTMNT ONLINE
812023	612017	SOX	State Compliance achieved	23-JAN-2008	State	ARSENIC TRTMNT ONLINE
812023	712022	SOX	State Compliance achieved	23-JAN-2008	State	ARSENIC TRTMNT ONLINE
712021	512014	SOX	State Compliance achieved	23-FEB-2006	State	ENF_NO:NOV; SAMPLES COLLECTED 8/22/06
712021	512015	SOX	State Compliance achieved	23-FEB-2006	State	ENF_NO:NOV; SAMPLES COLLECTED 8/22/06
612019	112013	SIA	State Violation/Reminder Notice	17-OCT-2005	State	ENF_NO:03-12-05E-023; NO LCR 2004
1112028	212011	SOX	State Compliance achieved	22-SEP-2003	State	ENF_NO:03-12-01E-006; SAMPLED FOR LCR IN 2003
112012	112005	SFL	State Administrative/Compliance Order without penalty issued	01-FEB-2001	State	ENF_NO:03-12-01C-002; TCR MCL VIOL NOV 2000
00E0001	95V0001	EOX	Federal Compliance achieved	01-MAR-2000	ODSWeb	-
9512008	9512004	SOX	State Compliance achieved	23-NOV-1994	State	CIT NO 03-12-94C-206
9412005	9412003	SFJ	State Formal Notice of Violation issued	13-JUN-1994	State	TOTAL COLIFORM MCL VIOLATION
9512010	9312002	SOX	State Compliance achieved	10-JUL-1993	State	03-287 COMPLIED
9312002	9312001	SFJ	State Formal Notice of Violation issued	27-JAN-1993	State	ENF_NO:03-236; DIRECTIVE CITATION REPEAT SAMPLING

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 04 (NORTH) - BEFORE_AS&CORRCNTL-TRT	15008	Yes	Well	Ground water	Permanent	Active
WELL 01 - DESTROYED	19361	Yes	Well	Ground water	Permanent	Inactive
WELL 05 - BEFORE_AS&CORRCNTL-TRT	74262	Yes	Well	Ground water	Permanent	Active
WELL 03 (EAST) - BEFORE_AS&CORRCNTL-TRT	15009	Yes	Well	Ground water	Permanent	Active
AS TRT PLANT - RAW BLND WTR STOR	27160	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	27159	No	Distribution System/Zone	-	-	Active
WQP_CCT-TAP MONIT	74323	No	Sampling Station	-	-	Active
AS & CORRCNTL_TRT-TANK - EFF	5999	No	Treatment Plant	-	-	Active

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
AS & CORRCNTL_TRT-TANK - EFF	5999	Coagulation	Inorganics removal
AS & CORRCNTL_TRT-TANK - EFF	5999	Hypochlorination, Pre	Disinfection
AS & CORRCNTL_TRT-TANK - EFF	5999	pH Adjustment, Pre	Inorganics removal
AS & CORRCNTL_TRT-TANK - EFF	5999	Filtration, Pressure Sand	Inorganics removal
AS & CORRCNTL_TRT-TANK - EFF	5999	Inhibitor, Orthophosphate	Corrosion control

1 - 5 of 5

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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