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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
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	216007	Returned to Compliance	01-JUN-2021	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	216006	Returned to Compliance	01-MAY-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	216004	Returned to Compliance	01-APR-2021	30-JUN-2021	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	216005	Returned to Compliance	01-APR-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	216003	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	216002	Returned to Compliance	01-OCT-2001	31-OCT-2001	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
9416008	216003	SOX	State Compliance achieved	15-JUL-2022	State	City of Montebello (1910117) returned to compliance for the CITATION NO. 04-22-21C-006
9416008	216004	SOX	State Compliance achieved	15-JUL-2022	State	City of Montebello (1910117) returned to compliance for the CITATION NO. 04-22-21C-006
9416007	216007	SOX	State Compliance achieved	09-SEP-2021	State	-
9416007	216005	SOX	State Compliance achieved	09-SEP-2021	State	-
9416007	216006	SOX	State Compliance achieved	09-SEP-2021	State	-
216011	216002	SOX	State Compliance achieved	20-DEC-2001	State	ENF_NO:04-16-01C-023; TCR MCL VIOLATION IN OCT 2001 TCR MCL EXCEEDANCE/PUBLIC NOTICE REQUIRED

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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
CAL WATER EAST LOS ANGELES (SOUTH)	72553	Yes	Consecutive Connection	Ground water under the influence of surface water	Emergency	Active
MONTEBELLO WELL 01-INACTIVE	11710	Yes	Well	Ground water	Permanent	Inactive
HOWMET WELL 01 - DESTROYED	18687	Yes	Well	Ground water	Other	Inactive
GOLF WELL - DESTROYED	18542	Yes	Well	Ground water	Other	Inactive
CHAPIN WELL 03 - DESTROYED	18529	Yes	Well	Ground water	Other	Inactive
WELL 25B - DESTROYED	18528	Yes	Well	Ground water	Other	Inactive
MONTEBELLO LAND AND WATER (NORTH)	72552	Yes	Consecutive Connection	Ground water	Emergency	Active
SGVWC CONNECTION M-6 - TREATED	58345	Yes	Consecutive Connection	Ground water	Permanent	Active
MWD CONNECTION CB-22 - TREATED	28392	Yes	Consecutive Connection	Surface water	Permanent	Active
MWD CONNECTION CB-24 - TREATED	28393	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	28391	No	Distribution System/Zone	-	-	Active
WELL 25A - MONITORING SITE	28394	No	Sampling Station	-	-	Inactive
GAGE RESERVOIR	70845	No	Storage	-	-	Active
TOWNCENTER RESERVOIR	70846	No	Storage	-	-	Active
HILLSIDE RESERVOIR	70847	No	Storage	-	-	Active
WELL 01 - CL2	4984	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 01 - CL2	4984	Hypochlorination, Post	Disinfection

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