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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 Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	48224	Returned to Compliance	10-AUG-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	48223	Returned to Compliance	01-JUL-2025	-	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	48222	Open	01-JUL-2025	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	48221	Open	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	48220	Open	17-OCT-2024	-	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	48211	Returned to Compliance	01-AUG-2011	31-AUG-2011	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	48216	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	47907	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	47807	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	48007	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	47407	Returned to Compliance	01-AUG-2006	31-AUG-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	47507	Returned to Compliance	01-JUL-2006	30-SEP-2006	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	46306	Returned to Compliance	10-AUG-2005	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	45405	Returned to Compliance	01-DEC-2004	31-DEC-2004	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	45905	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	46005	Returned to Compliance	01-JAN-2004	31-DEC-2004	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	100	Returned to Compliance	19-OCT-1999	-	No
TT	OCCT/SOWT Treatment Installation/Demonstration	Lead and Copper Rule	Lead and Copper Rule	45200	Returned to Compliance	01-JUL-1999	-	Yes
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	4197	Returned to Compliance	01-JAN-1996	30-JUN-1996	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	45195	Returned to Compliance	01-MAR-1995	31-MAR-1995	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	8496	Returned to Compliance	01-JAN-1995	31-DEC-1995	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8396	Returned to Compliance	01-JAN-1995	31-DEC-1995	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
98018	48223	SOX	State Compliance achieved	03-NOV-2025	State	-
98020	48222	SIF	State Public Notification received	03-NOV-2025	State	-
98019	48224	SOX	State Compliance achieved	03-NOV-2025	State	-
98009	48216	SOX	State Compliance achieved	28-NOV-2011	State	-
98009	48211	SOX	State Compliance achieved	28-NOV-2011	State	-
97607	47907	SOX	State Compliance achieved	15-MAY-2007	State	results received
97607	47807	SOX	State Compliance achieved	15-MAY-2007	State	results received
97607	48007	SOX	State Compliance achieved	15-MAY-2007	State	results received
97707	47407	SOX	State Compliance achieved	31-MAR-2007	State	RTC
97207	47507	SIF	State Public Notification received	10-JAN-2007	State	-
93306	46306	SOX	State Compliance achieved	25-NOV-2005	State	CCR-COMPLETED
92105	46005	SIE	State Public Notification requested	17-MAY-2005	State	-
92205	45405	SIA	State Violation/Reminder Notice	17-MAY-2005	State	-
92105	45905	SIE	State Public Notification requested	17-MAY-2005	State	-
93405	45195	SOX	State Compliance achieved	31-DEC-2004	State	New Owner
93405	100	SOX	State Compliance achieved	31-DEC-2004	State	New Owner
93405	45200	SOX	State Compliance achieved	31-DEC-2004	State	New Owner
38397	4197	SOX	State Compliance achieved	14-FEB-1997	State	-
91896	8496	SOX	State Compliance achieved	16-FEB-1996	State	-
66596	8396	SOX	State Compliance achieved	14-FEB-1996	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
INTERCONNECTION - UWC-NEWTOWN SYSTEM	46148	Yes	Consecutive Connection	Ground water	Other	Inactive
WELL #3	27670	Yes	Well	Ground water	Permanent	Active
WELL #8	27669	Yes	Well	Ground water	Permanent	Active
WELL #7	27668	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	22656	No	Distribution System/Zone	-	-	Active
NUNNAWAUK ELDERLY HOUSING PS	52187	No	Pump Facility	-	-	Active
TRANSFER PUMP STATION	59834	No	Pump Facility	-	-	Active
ENTRY POINT	38259	No	Sampling Station	-	-	Active
ATMOSPHERIC CONCRETE WETWELL	52179	No	Storage	-	-	Active
FAIRFIELD HILLS SOUTH TANK	52181	No	Storage	-	-	Active
FAIRFIELD HILLS NORTH TANK	52183	No	Storage	-	-	Active
NUNNAWAUK PS HYDRO TANK	52185	No	Storage	-	-	Active
TREATMENT PLANT	36473	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	36473	Inhibitor, Polyphosphate	Corrosion control
TREATMENT PLANT	36473	Hypochlorination, Post	Disinfection

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