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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	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	8641913	Returned to Compliance	22-OCT-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	8641911	Returned to Compliance	29-FEB-2020	31-MAY-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	8641912	Returned to Compliance	29-FEB-2020	31-MAY-2020	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	8641910	Returned to Compliance	01-JUL-2018	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	8640606	Returned to Compliance	01-JUL-2006	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	115593	Returned to Compliance	01-MAY-1993	31-MAY-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	10783	Returned to Compliance	01-AUG-1983	31-AUG-1983	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
158694	8641912	SIF	State Public Notification received	08-NOV-2022	State	-
158693	8641913	SOX	State Compliance achieved	08-NOV-2022	State	-
158694	8641911	SIF	State Public Notification received	08-NOV-2022	State	-
158687	8641910	SIA	State Violation/Reminder Notice	16-JAN-2019	State	-
158207	8640606	SIA	State Violation/Reminder Notice	13-OCT-2006	State	-
157293	115593	SOX	State Compliance achieved	24-AUG-1993	State	-
158483	10783	SOX	State Compliance achieved	30-SEP-1983	State	RTC

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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 - CT0150011 - AWC MAIN	46043	Yes	Consecutive Connection	Surface water	Permanent	Active
LLOYD WELL	27422	Yes	Well	Ground water	Seasonal	Inactive
NATURE CENTER WELL	27418	Yes	Well	Ground water	Other	Inactive
COUNTRY DAY WELL	27417	Yes	Well	Ground water	Other	Inactive
WING ROAD WELL	27416	Yes	Well	Ground water	Other	Inactive
MAYO WELL	27415	Yes	Well	Ground water	Other	Inactive
WEED STREET WELL	27857	Yes	Well	Ground water under the influence of surface water	Other	Inactive
INTERCONNECTION - AQUARION - STAMFORD	60226	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	22359	No	Distribution System/Zone	-	-	Active
NEW CANAAN HIGH SERVICE PUMP STATION	53449	No	Pump Facility	-	-	Active
LITTLE BROOK PUMP STATION	58342	No	Pump Facility	-	-	Active
COUNTRY DAY WELL TP ENTRY POINT	38322	No	Sampling Station	-	-	Inactive
MAYO WELL TP ENTRY POINT	46044	No	Sampling Station	-	-	Inactive
LLOYD WELL TP ENTRY POINT	46045	No	Sampling Station	-	-	Inactive
WEST SCHOOL TANK	50988	No	Storage	-	-	Active
WAVENY TANK	50990	No	Storage	-	-	Active
NEW CANAAN HIGH SERVICE HYDRO TANK	50994	No	Storage	-	-	Active
NATURE CENTER TANK #1	50992	No	Storage	-	-	Inactive
COUNTRY DAY HYDRO TANK	57364	No	Storage	-	-	Inactive
NATURE CENTER HYDRO TANKS	57366	No	Storage	-	-	Inactive
LLOYD TANK	60224	No	Storage	-	-	Inactive
LLOYD WELL TP	36428	No	Treatment Plant	-	-	Inactive
MAYO WELL TP	36432	No	Treatment Plant	-	-	Inactive
COUNTRY DAY WELL TP	36433	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
MAYO WELL TP	36432	Hypochlorination, Post	Disinfection
COUNTRY DAY WELL TP	36433	Hypochlorination, Post	Disinfection

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