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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.

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Violations

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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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	9407005	Returned to Compliance	01-JUN-2021	30-JUN-2021	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	822004	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	9407003	Returned to Compliance	01-NOV-1993	30-NOV-1993	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9407002	Returned to Compliance	01-NOV-1993	30-NOV-1993	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9407001	Returned to Compliance	01-NOV-1993	30-NOV-1993	Yes

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9915012	9407005	SOX	State Compliance achieved	01-JAN-2022	State	-
822032	822004	SOX	State Compliance achieved	24-APR-2008	State	RETURN TO COMPLIANCE WELL 3 ARSENIC MCL
9515006	9407002	SOX	State Compliance achieved	11-MAR-1994	State	ENF_NO:04-07-95C-001; COMPLIED WITH CIT.-95C-001
9515006	9407001	SOX	State Compliance achieved	11-MAR-1994	State	ENF_NO:04-07-95C-001; COMPLIED WITH CIT.-95C-001
9515006	9407003	SOX	State Compliance achieved	11-MAR-1994	State	ENF_NO:04-07-95C-001; COMPLIED WITH CIT.-95C-001

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MONTEBELLO LAND & WATER CO CONN.-1	71692	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL 05	11749	Yes	Well	Ground water	Permanent	Active
WELL 03	11732	Yes	Well	Ground water	Permanent	Active
WELL 07	11731	Yes	Well	Ground water	Permanent	Active
WELL 01 - INACTIVE	22833	Yes	Well	Ground water	Other	Inactive
WELL 02 - INACTIVE	20591	Yes	Well	Ground water	Other	Inactive
WELL 04 - DESTROYED	18592	Yes	Well	Ground water	Other	Inactive
WELL 06 - STANDBY	11734	Yes	Well	Ground water	Emergency	Active
MONTEBELLO LAND & WATER CO CONN.-2	71693	Yes	Consecutive Connection	Ground water	Emergency	Active
MONTEBELLO LAND & WATER CO CONN.-3	71694	Yes	Consecutive Connection	Ground water	Emergency	Active
CWSC-EAST LA CONN.-1	71695	Yes	Consecutive Connection	Surface water	Emergency	Active
CWSC-EAST LA CONN.-2	71696	Yes	Consecutive Connection	Surface water	Emergency	Active
DISTRIBUTION SYSTEM	28471	No	Distribution System/Zone	-	-	Active
WELL 03 BLENDED WITH WELL 05 (ARSENIC)	28472	No	Sampling Station	-	-	Active
EAST TANK	71330	No	Storage	-	-	Active
WEST TANK	71331	No	Storage	-	-	Active
WELL 07 - CHLORINATION	4973	No	Treatment Plant	-	-	Active
WELL 06 - CHLORINATION	4985	No	Treatment Plant	-	-	Active
COMBINED WELLS 1,3 & 5 - CHLORINATION	5939	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 07 - CHLORINATION	4973	Hypochlorination, Post	Disinfection
WELL 06 - CHLORINATION	4985	Hypochlorination, Post	Disinfection
COMBINED WELLS 1,3 & 5 - CHLORINATION	5939	Hypochlorination, Post	Disinfection
COMBINED WELLS 1,3 & 5 - CHLORINATION	5939	4-Log Treatment of Viruses	Disinfection

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