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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
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9704011	Returned to Compliance	01-JAN-1997	31-JAN-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9304008	Returned to Compliance	01-NOV-1992	30-NOV-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9204007	Returned to Compliance	01-JAN-1992	31-JAN-1992	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
804015	9704011	SOX	State Compliance achieved	13-FEB-1997	State	ENF_NO:9904014;
9904016	9304008	SOX	State Compliance achieved	30-DEC-1992	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
9904015	9204007	SOX	State Compliance achieved	29-FEB-1992	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.

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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
WILBUR AVENUE TREATED WATER INTERTIE	73884	Yes	Consecutive Connection	Surface water	Emergency	Active
ANTIOCH MUNICIPAL RESERVOIR	58375	Yes	Reservoir	Surface water	Permanent	Active
SAN JOAQUIN RIVER INTAKE	25043	Yes	Intake	Surface water	Permanent	Active
VICTORIA CANAL INTAKE	45701	Yes	Intake	Surface water	Other	Inactive
ROCK SLOUGH INTAKE	25042	Yes	Intake	Surface water	Other	Inactive
OLD RIVER INTAKE	25040	Yes	Intake	Surface water	Other	Inactive
LOS VAQUEROS RESERVOIR	25039	Yes	Intake	Surface water	Other	Inactive
CONTRA LOMA RESERVOIR	25037	Yes	Intake	Surface water	Other	Inactive
CITY OF PITTSBURG EMERGENCY INTERTIE	73885	Yes	Consecutive Connection	Surface water	Emergency	Active
INACTIVE TREATED WATER INTERTIE	25036	Yes	Consecutive Connection	Surface water	Other	Inactive
MULTI-PURPOSE PIPELINE CONNECTION	25041	Yes	Consecutive Connection	Surface water	Permanent	Active
CONTRA COSTA CANAL INTAKE	58376	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	25038	No	Distribution System/Zone	-	-	Active
ANTIOCH WTP	1389	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
ANTIOCH WTP	1389	Chloramines	Disinfection
ANTIOCH WTP	1389	Coagulation	Particulate removal
ANTIOCH WTP	1389	Sedimentation	Particulate removal
ANTIOCH WTP	1389	Filtration, Rapid Sand	Particulate removal
ANTIOCH WTP	1389	Fluoridation	Other
ANTIOCH WTP	1389	Chloramines	Disinfection by-products control
ANTIOCH WTP	1389	pH Adjustment, Post	Corrosion control

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