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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	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2013	Returned to Compliance	01-JUL-2023	-	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	2010	Returned to Compliance	01-JAN-2020	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2009	Returned to Compliance	01-APR-2016	30-JUN-2016	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2008	Returned to Compliance	25-AUG-2007	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1907	Returned to Compliance	01-JUL-2007	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1807	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1007	Returned to Compliance	01-OCT-2006	31-DEC-2006	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	906	Returned to Compliance	10-AUG-2005	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	806	Returned to Compliance	01-JUL-2005	-	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
1415	2013	SOX	State Compliance achieved	28-JUL-2023	State	2022 CCR completed
1413	2010	SOX	State Compliance achieved	12-MAR-2020	State	-
1409	2009	SIA	State Violation/Reminder Notice	27-SEP-2016	State	-
1408	1807	SIF	State Public Notification received	16-JAN-2008	State	-
1308	2008	SOX	State Compliance achieved	16-JAN-2008	State	PN received
907	1907	SIA	State Violation/Reminder Notice	12-SEP-2007	State	-
1207	1007	SOX	State Compliance achieved	30-JUN-2007	State	RTC
306	806	SOX	State Compliance achieved	29-NOV-2005	State	ccr-completed
306	906	SOX	State Compliance achieved	29-NOV-2005	State	ccr-completed

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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
INTERCONNECTION - CT0590011 - GROTON	21644	Yes	Consecutive Connection	Surface water	Permanent	Active
PFIZER WELL	36836	Yes	Well	Ground water	Permanent	Inactive
DISTRIBUTION SYSTEM	36005	No	Distribution System/Zone	-	-	Active
HOLMBERG PUMP STATION	58944	No	Pump Facility	-	-	Active
ENTRY POINT	38495	No	Sampling Station	-	-	Inactive
HOLMBERG ORCHARD TANK	53566	No	Storage	-	-	Active
AVERY HILL HYDRO TANK	58946	No	Storage	-	-	Active
GALES FERRY TREATMENT BUILDING	45253	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
GALES FERRY TREATMENT BUILDING	45253	Hypochlorination, Post	Disinfection

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