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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
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	806003	Returned to Compliance	01-APR-2025	30-APR-2025	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	806001	Returned to Compliance	01-AUG-2008	31-AUG-2008	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
9606007	806003	SFL	State Administrative/Compliance Order without penalty issued	07-MAY-2025	State	Routine tested positive for TC and EC. 2 Repeat samples tested positive for TC. L2A to be conducted 5/2/25.
9606004	806001	SOX	State Compliance achieved	30-SEP-2008	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
CCWA - TREATED	31354	Yes	Consecutive Connection	Surface water	Permanent	Active
LOPEZ TERMINAL RESERVOIR OUTLET	2	Yes	Intake	Surface water	Permanent	Inactive
LOPEZ RESERVOIR RAW	1	Yes	Intake	Surface water	Permanent	Inactive
LOPEZ TREATMENT PLANT RAW	31358	Yes	Intake	Surface water	Permanent	Active
LOPEZ TERMINAL RESERVOIR OUTLET	31357	Yes	Intake	Surface water	Permanent	Active
LOPEZ RESERVOIR RAW	31356	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	31355	No	Distribution System/Zone	-	-	Active
LOPEZ TREATMENT PLANT TREATED	4	No	Treatment Plant	-	Permanent	Inactive
LOPEZ TREATMENT PLANT TREATED	292	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
LOPEZ TREATMENT PLANT TREATED	292	Chlorine Dioxide	Disinfection
LOPEZ TREATMENT PLANT TREATED	292	Chloramines	Disinfection by-products control
LOPEZ TREATMENT PLANT TREATED	292	Hypochlorination, Post	Disinfection
LOPEZ TREATMENT PLANT TREATED	292	Sedimentation	Particulate removal
LOPEZ TREATMENT PLANT TREATED	292	Rapid Mix	Particulate removal
LOPEZ TREATMENT PLANT TREATED	292	Flocculation	Particulate removal
LOPEZ TREATMENT PLANT TREATED	292	Coagulation	Particulate removal
LOPEZ TREATMENT PLANT TREATED	292	Filtered	Particulate removal
LOPEZ TREATMENT PLANT TREATED	4	Filtered	Particulate removal
LOPEZ TREATMENT PLANT TREATED	4	Coagulation	Particulate removal
LOPEZ TREATMENT PLANT TREATED	4	Flocculation	Particulate removal
LOPEZ TREATMENT PLANT TREATED	4	Rapid Mix	Particulate removal
LOPEZ TREATMENT PLANT TREATED	4	Sedimentation	Particulate removal
LOPEZ TREATMENT PLANT TREATED	4	Hypochlorination, Post	Disinfection

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