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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
Other	Notification, State	Total Coliform Rule	Coliform (TCR)	9604008	Returned to Compliance	01-NOV-1995	30-NOV-1995	No
MCL	Maximum Contaminant Level Violation, Single Sample	Volatile Organic Chemicals	1,2-Dichloroethane	9504009	Returned to Compliance	23-AUG-1995	13-DEC-1995	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9404006	Returned to Compliance	01-JUL-1994	31-JUL-1994	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	9404007	Returned to Compliance	01-JUL-1994	31-JUL-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9204005	Returned to Compliance	01-SEP-1992	30-SEP-1992	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
9604017	9504009	SFJ	State Formal Notice of Violation issued	07-MAR-1996	State	ENF_NO:02-04-96C-008; CITATION FOR PROCEDURAL AND W.Q. FAILURE REG. 1,2 DICHLOROETHANE
9604019	9604008	SOX	State Compliance achieved	10-JAN-1996	State	-
9604015	9404007	SOX	State Compliance achieved	13-SEP-1995	State	-
9604021	9404006	SOX	State Compliance achieved	31-AUG-1994	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
9604020	9204005	SOX	State Compliance achieved	30-OCT-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
CCWD EBMUD UNTREATED WATER INTERTIE	57685	Yes	Consecutive Connection	Surface water	Emergency	Active
FREEPORT REGIONAL WATER PROJECT	55005	Yes	Intake	Surface water	Permanent	Active
WALNUT CREEK WTP INTAKE	24767	Yes	Intake	Surface water	Permanent	Active
UPPER SAN LEANDRO RESERVOIR	24766	Yes	Intake	Surface water	Permanent	Active
SAN PABLO RESRVOIR - SAN PABLO INTAKE	24765	Yes	Intake	Surface water	Permanent	Active
SAN PABLO RESERVOIR - SOBRANTE INTAKE	24764	Yes	Intake	Surface water	Permanent	Active
PARDEE RESERVOIR	24763	Yes	Intake	Surface water	Permanent	Active
ORINDA WTP INTAKE	24762	Yes	Intake	Surface water	Permanent	Active
LAFAYETTE WTP INTAKE	24761	Yes	Intake	Surface water	Permanent	Active
BRIONES RESERVOIR	24757	Yes	Intake	Surface water	Permanent	Active
LAFAYETTE RESERVOIR	24760	Yes	Intake	Surface water	Emergency	Inactive
CHABOT LAKE	24758	Yes	Intake	Surface water	Emergency	Inactive
DISTRIBUTION SYSTEM	24759	No	Distribution System/Zone	-	-	Active
LAFAYETTE WTP	1657	No	Treatment Plant	-	-	Active
ORINDA WTP	1658	No	Treatment Plant	-	-	Active
SOBRANTE WTP	1659	No	Treatment Plant	-	-	Active
UPPER SAN LEANDRO WTP	1660	No	Treatment Plant	-	-	Active
WALNUT CREEK WTP	1661	No	Treatment Plant	-	-	Active
SAN PABLO WTP	1662	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
LAFAYETTE WTP	1657	Chloramines	Disinfection
LAFAYETTE WTP	1657	Chloramines	Disinfection by-products control
LAFAYETTE WTP	1657	pH Adjustment	Corrosion control
ORINDA WTP	1658	Chloramines	Disinfection
ORINDA WTP	1658	Chloramines	Disinfection by-products control
ORINDA WTP	1658	pH Adjustment	Corrosion control
SOBRANTE WTP	1659	Chloramines	Disinfection
SOBRANTE WTP	1659	pH Adjustment	Corrosion control
SOBRANTE WTP	1659	Filtration, Rapid Sand	Particulate removal
SOBRANTE WTP	1659	Coagulation	Particulate removal
SOBRANTE WTP	1659	Flocculation	Particulate removal
SOBRANTE WTP	1659	Sedimentation	Particulate removal
SOBRANTE WTP	1659	Fluoridation	Other
SOBRANTE WTP	1659	Hypochlorination, Post	Disinfection
SOBRANTE WTP	1659	Ozonation, Pre	Disinfection
UPPER SAN LEANDRO WTP	1660	Chloramines	Disinfection
UPPER SAN LEANDRO WTP	1660	Chloramines	Disinfection by-products control
UPPER SAN LEANDRO WTP	1660	pH Adjustment	Corrosion control
WALNUT CREEK WTP	1661	Chloramines	Disinfection
WALNUT CREEK WTP	1661	Chloramines	Disinfection by-products control
WALNUT CREEK WTP	1661	pH Adjustment	Corrosion control
SAN PABLO WTP	1662	Chloramines	Disinfection by-products control
SAN PABLO WTP	1662	Chloramines	Disinfection
SAN PABLO WTP	1662	Sedimentation	Particulate removal
SAN PABLO WTP	1662	Coagulation	Particulate removal
SAN PABLO WTP	1662	Filtered	Particulate removal
SAN PABLO WTP	1662	pH Adjustment	Corrosion control

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