---

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.

---

Violations

Go

Rows1510152025501001000All

Actions

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	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	7148015	Open	01-JAN-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7148014	Returned to Compliance	15-OCT-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7148011	Returned to Compliance	01-JUL-2020	31-AUG-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7148012	Returned to Compliance	01-JUL-2020	31-AUG-2020	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7148010	Returned to Compliance	01-JUL-2020	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7148008	Returned to Compliance	01-SEP-2017	31-AUG-2018	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7148009	Returned to Compliance	01-SEP-2017	31-AUG-2018	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7147906	Returned to Compliance	08-MAR-2006	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7148006	Returned to Compliance	08-MAR-2006	-	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	7147605	Returned to Compliance	01-JAN-2005	31-JAN-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7147705	Returned to Compliance	01-JAN-2005	31-MAR-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3147695	Known	01-AUG-1995	31-AUG-1995	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1305191	Known	01-JAN-1991	31-JAN-1991	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7147380	Known	30-JUN-1977	29-JUN-1981	No

• 1 - 14 of 14

Column Actions

Search

---

Enforcement Actions

Go

Rows1510152025501001000All

Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
5025423	7148015	SIE	State Public Notification requested	21-JAN-2025	State	-
5025421	7148012	SIF	State Public Notification received	16-JUN-2022	State	-
5025420	7148014	SOX	State Compliance achieved	16-JUN-2022	State	-
5025421	7148011	SIF	State Public Notification received	16-JUN-2022	State	-
5025414	7148010	SOX	State Compliance achieved	21-AUG-2020	State	-
5025412	7148008	SOX	State Compliance achieved	19-AUG-2019	State	-
5025412	7148009	SOX	State Compliance achieved	19-AUG-2019	State	-
5025406	7147906	SOX	State Compliance achieved	05-MAY-2006	State	Supply issued PN 5/4/06 (LATE), IEPA rcvd. copy 5/5/06.
5025106	7147705	SIF	State Public Notification received	05-MAY-2006	State	-
5025406	7148006	SOX	State Compliance achieved	05-MAY-2006	State	Supply issued PN 5/4/06 (LATE), IEPA rcvd. copy 5/5/06.
5025106	7147605	SIF	State Public Notification received	05-MAY-2006	State	-
5023896	3147695	SIE	State Public Notification requested	04-NOV-1995	State	-
916191	1305191	SIF	State Public Notification received	27-APR-1991	State	-

• 1 - 13 of 13

Column Actions

Search

---

All Facilities

Go

Rows1510152025501001000All

Actions

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC01 - MASTER METER URWC	43890	Yes	Consecutive Connection	Ground water	Permanent	Active
WELL 5 (47721) (ABANDONED)	21582	Yes	Well	Ground water	Permanent	Inactive
WELL 4 (47720) (ABANDONED)	21581	Yes	Well	Ground water	Permanent	Inactive
WELL 6 (01006) (ABANDONED)	18805	Yes	Well	Ground water	Permanent	Inactive
NIANTIC	24488	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	28147	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	30569	No	Sampling Station	-	-	Active
DISTRIBUTION ELEVATED STORAGE	11501	No	Storage	-	-	Active
TP 01-PLANT (ABANDONED)	16626	No	Treatment Plant	-	-	Inactive
TP 02-TREATMENT PLANT	16627	No	Treatment Plant	-	-	Inactive

• 1 - 10 of 10

Column Actions

Search

---

Treatment Processes

Go

Rows1510152025501001000All

Actions

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 02-TREATMENT PLANT	16627	Fluoridation	Other
TP 02-TREATMENT PLANT	16627	Gaseous Chlorination, Pre	Disinfection
TP 02-TREATMENT PLANT	16627	Fluoridation	Disinfection
TP 02-TREATMENT PLANT	16627	Gaseous Chlorination, Post	Disinfection
TP 02-TREATMENT PLANT	16627	Aeration, Spray	Iron removal
TP 02-TREATMENT PLANT	16627	Gaseous Chlorination, Pre	Iron removal
TP 02-TREATMENT PLANT	16627	Filtration, Pressure Sand	Iron removal
TP 02-TREATMENT PLANT	16627	Ion Exchange	Softening (hardness removal)
TP 02-TREATMENT PLANT	16627	Filtration, Pressure Sand	Softening (hardness removal)

• 1 - 9 of 9

Column Actions

Search