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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
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1	Known	01-MAY-2008	31-MAY-2008	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	04V0001	Known	01-AUG-2004	31-AUG-2004	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	02V0001	Known	01-JUL-2002	31-JUL-2002	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	01V0001	Returned to Compliance	01-JAN-2000	-	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	00V0001	Returned to Compliance	01-JAN-1999	-	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	99V0001	Returned to Compliance	01-JAN-1998	-	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	97V0002	Known	01-JUL-1997	31-JUL-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	97V0001	Known	01-SEP-1996	30-SEP-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	96V0001	Known	01-AUG-1996	31-AUG-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	95V0003	Known	01-JUL-1995	31-JUL-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	95V0002	Known	01-JUN-1995	30-JUN-1995	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	95V0001	Returned to Compliance	01-JAN-1994	-	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	93V0002	Known	01-JAN-1993	31-MAR-1993	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	95V0005	Returned to Compliance	01-JAN-1993	-	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	9230008	Returned to Compliance	01-JUN-1992	30-JUN-1992	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	95V0004	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
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9140014	Returned to Compliance	01-AUG-1991	31-AUG-1991	Yes
Other	Notification, Public	Miscellaneous Other Rules	-	8000672	Known	31-AUG-1980	30-SEP-1980	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
30	1	SFL	State Administrative/Compliance Order without penalty issued	24-JUN-2008	State	MISSING BACTERIOLOGICAL REPORT FOR MAY 2008
28	04V0001	SFL	State Administrative/Compliance Order without penalty issued	09-SEP-2004	State	-
27	02V0001	SFL	State Administrative/Compliance Order without penalty issued	21-AUG-2002	State	SUBMIT PUBLIC NOTICE TO DEP
23	01V0001	SOX	State Compliance achieved	29-MAR-2001	State	SUBMITTAL LETTER DATE
18	00V0001	SOX	State Compliance achieved	08-MAR-2000	State	-
19	99V0001	SOX	State Compliance achieved	09-APR-1999	State	-
14	97V0002	SIE	State Public Notification requested	10-AUG-1997	State	-
13	97V0001	SIE	State Public Notification requested	31-OCT-1996	State	-
12	96V0001	SIE	State Public Notification requested	12-SEP-1996	State	-
9	95V0002	SIE	State Public Notification requested	26-JUL-1995	State	-
10	95V0003	SIE	State Public Notification requested	21-JUL-1995	State	-
20	95V0001	SOX	State Compliance achieved	08-MAR-1995	State	-
20	95V0005	SOX	State Compliance achieved	08-MAR-1995	State	-
20	95V0004	SOX	State Compliance achieved	08-MAR-1995	State	-
9799999	9799999	SFL	State Administrative/Compliance Order without penalty issued	29-JUN-1993	ODSWeb	-
6	93V0002	SFL	State Administrative/Compliance Order without penalty issued	19-MAR-1993	State	MICROBIOLOGICAL/BACT FEB 1993 2ND TO OCCUR W/12MTHS
9240012	9230008	SOX	State Compliance achieved	30-AUG-1992	State	-
9210015	9140014	SOX	State Compliance achieved	03-FEB-1992	State	-

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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	10	Yes	Consecutive Connection	Surface water	Permanent	Active
WARREN DUG AND TUBULAR WELLS	4	Yes	Well	Ground water	Emergency	Inactive
RTE. 128 G.P. WELL	3	Yes	Well	Ground water	Emergency	Inactive
NICKERSON FIELD G.P. WELL	2	Yes	Well	Ground water	Emergency	Inactive
KENDALL GREEN TUB. WELLS	1	Yes	Well	Ground water	Emergency	Active
MASSACHUSETTS WATER RESOURCE AUTHORITY	12	Yes	Consecutive Connection	Surface water	Permanent	Active
BLACK OAK BOOSTER PUMP STATION	15	No	Pump Facility	-	-	Active
WELLESLEY STREET PUMP STATION	5	No	Pump Facility	-	-	Active
PAINES HILL	13	No	Storage	-	-	Active
CATROCK TANK	6	No	Storage	-	-	Active
DOUBLET HILL STORAGE	7	No	Storage	-	-	Active
BLACK OAK STORAGE	8	No	Storage	-	-	Active
MWRA SUPPLY WTP	14	No	Treatment Plant	-	-	Inactive

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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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