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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, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	417010	Returned to Compliance	01-APR-2018	-	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	417009	Returned to Compliance	01-NOV-2015	30-NOV-2015	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	417006	Returned to Compliance	01-SEP-2004	30-SEP-2004	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4005	Returned to Compliance	01-MAY-2000	31-MAY-2000	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
517009	417010	SOX	State Compliance achieved	15-AUG-2019	State	-
517008	417009	SOX	State Compliance achieved	30-DEC-2015	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
517007	417006	SOX	State Compliance achieved	30-OCT-2004	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
517006	4005	SOX	State Compliance achieved	30-JUN-2000	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
CONNECTION - EAST PALO ALTO	69097	Yes	Consecutive Connection	Surface water	Emergency	Active
WELL 01	15592	Yes	Well	Ground water	Permanent	Active
WELL 02	15591	Yes	Well	Ground water	Permanent	Active
CONNECTION - MENLO PARK	69098	Yes	Consecutive Connection	Surface water	Emergency	Active
DISTRIBUTION SYSTEM	31466	No	Distribution System/Zone	-	-	Active
100,000 GAL. STORAGE TANK	71541	No	Storage	-	-	Active
MN PLANT INFLUENT	67636	No	Treatment Plant	-	-	Active
MN PLANT EFFLUENT	74926	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
MN PLANT INFLUENT	67636	Innovative	Manganese removal
MN PLANT EFFLUENT	74926	Hypochlorination, Pre	Disinfection
MN PLANT EFFLUENT	74926	Hypochlorination, Pre	Manganese removal
MN PLANT EFFLUENT	74926	Filtration, Greensand	Manganese removal

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