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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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1	Known	01-AUG-2021	31-AUG-2021	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	97V0001	Returned to Compliance	01-JAN-1996	-	Yes
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	96V0001	Known	01-APR-1995	30-JUN-1995	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	95V0001	Returned to Compliance	01-JAN-1994	-	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	95V0003	Returned to Compliance	01-JAN-1993	-	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	95V0002	Returned to Compliance	01-JAN-1992	-	Yes
TT	Failure to Filter (SWTR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9799999	Known	01-JAN-1992	05-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
19	1	SFL	State Administrative/Compliance Order without penalty issued	11-FEB-2022	State	M/R VIOLATION - INSUFFICIENT RTCR SAMPLES AUG. 2021
10	97V0001	SOX	State Compliance achieved	10-JUN-1998	State	-
4	96V0001	SFL	State Administrative/Compliance Order without penalty issued	18-JUL-1996	State	-
7	95V0001	SOX	State Compliance achieved	21-MAR-1995	State	-
7	95V0002	SOX	State Compliance achieved	21-MAR-1995	State	-
7	95V0003	SOX	State Compliance achieved	21-MAR-1995	State	-
9799999	9799999	SFL	State Administrative/Compliance Order without penalty issued	29-JUN-1993	ODSWeb	-

• 1 - 7 of 7

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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
MWRA SUPPLY	1	Yes	Consecutive Connection	Surface water	Permanent	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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