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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
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1220008	Open	01-OCT-2023	-	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1220006	Returned to Compliance	01-APR-2013	30-JUN-2013	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1220007	Returned to Compliance	01-APR-2013	30-JUN-2013	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	1220005	Returned to Compliance	01-OCT-2011	31-OCT-2011	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	820004	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	820003	Returned to Compliance	01-JUL-2008	30-SEP-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	320002	Returned to Compliance	01-SEP-2003	30-SEP-2003	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	320001	Returned to Compliance	01-DEC-2002	31-DEC-2002	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

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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
9520007	1220008	SFL	State Administrative/Compliance Order without penalty issued	08-NOV-2023	State	Citation 05-20-23C-010 issued 11/6/2023
9520003	1220006	SOX	State Compliance achieved	08-AUG-2013	State	Samples collected on 8/8/2013.
9520003	1220007	SOX	State Compliance achieved	08-AUG-2013	State	Samples collected on 8/8/2013.
1220006	1220005	SOX	State Compliance achieved	29-NOV-2011	State	FAILURE TO COLLECT REPEAT WITHIN 24 HOURS
920004	820003	SIA	State Violation/Reminder Notice	11-MAR-2009	State	LTR MSSING 1/4 MNTR IN 2008 DBPR
920004	820004	SIA	State Violation/Reminder Notice	11-MAR-2009	State	LTR MSSING 1/4 MNTR IN 2008 DBPR
9520006	320002	SOX	State Compliance achieved	30-OCT-2003	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
9520005	320001	SOX	State Compliance achieved	31-JAN-2003	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
00E0001	95V0001	EOX	Federal Compliance achieved	01-MAR-2000	ODSWeb	-

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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
CITY OF CORONA INTERTIE - TREATED	63089	Yes	Consecutive Connection	Surface water	Emergency	Active
ELSINORE VALLEY MWD INTERTIE - TREATED	63090	Yes	Consecutive Connection	Surface water	Emergency	Active
WESTERN MWD - TREATED	30295	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	30294	No	Distribution System/Zone	-	-	Active

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Treatment Processes

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No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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