Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CT1370011
PWS Name	AQUARION-MYSTIC
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	10788
County Served	New London

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

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	8725408	Returned to Compliance	10-AUG-2018	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	8725407	Returned to Compliance	01-JUL-2018	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	8725451	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	8725450	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	8725449	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	8725447	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	8725445	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	8725444	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	8725443	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	8725442	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	8725441	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	8725440	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	8725439	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	8725437	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	8725436	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	8725435	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	8725434	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	8725430	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	8725415	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	8725414	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	8725459	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	8725452	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8725458	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	8725455	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	8725475	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	8725468	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	8725467	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	8725466	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	8725465	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	8725472	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	8725461	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	8725460	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	8725474	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	8725473	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	8725464	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	8725462	Returned to Compliance	01-JAN-2016	31-DEC-2018	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	8725406	Returned to Compliance	01-JUL-2006	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	155293	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8714687	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	8714187	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	8714587	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	8713987	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	8710587	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	8710487	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	8714287	Returned to Compliance	01-DEC-1986	30-NOV-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	8713887	Returned to Compliance	01-DEC-1986	30-NOV-1987	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
172398	8725475	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725473	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725474	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725472	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725414	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725415	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725430	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725434	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725435	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725436	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725437	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725439	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725440	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725441	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725442	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725443	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725444	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725445	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725447	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725449	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725450	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725451	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725452	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725455	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725458	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725459	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725460	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725461	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725462	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725464	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725465	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725466	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725467	SIF	State Public Notification received	25-FEB-2020	State	-
172398	8725468	SIF	State Public Notification received	25-FEB-2020	State	-
172393	8725407	SIA	State Violation/Reminder Notice	06-MAY-2019	State	-
172390	8725408	SIA	State Violation/Reminder Notice	11-JAN-2019	State	-
172207	8725406	SIA	State Violation/Reminder Notice	13-OCT-2006	State	-
171693	155293	SIA	State Violation/Reminder Notice	25-OCT-1993	State	-
172389	8710587	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8713887	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8714687	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8714187	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8714287	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8714587	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8710487	SOX	State Compliance achieved	31-DEC-1988	State	RTC
172389	8713987	SOX	State Compliance achieved	31-DEC-1988	State	RTC

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
INTERCONNECTION-CT0590011-GROTON	61759	Yes	Consecutive Connection	Surface water	Permanent	Active
LANTERN HILL WELL 1	27833	Yes	Well	Ground water	Permanent	Inactive
LANTERN HILL WELL 1A	49631	Yes	Well	Ground water	Permanent	Active
COPPS BROOK WELL	27839	Yes	Well	Ground water	Emergency	Inactive
DEANS MILL RESERVOIR	32549	Yes	Reservoir	Surface water	Permanent	Active
PALMER RESERVOIR	32548	Yes	Reservoir	Surface water	Permanent	Active
PALMER RESERVOIR INTAKE	23908	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	23909	No	Distribution System/Zone	-	-	Active
DEANS MILL WTP PUMP STATION	49641	No	Pump Facility	-	-	Active
PEQUOT FIRE BOOSTER STATION	49647	No	Pump Facility	-	-	Active
INDIGO STREET BOOSTER STATION	49649	No	Pump Facility	-	-	Active
HIGH STREET PUMP STATION	54321	No	Pump Facility	-	-	Active
DEANS MILL RAW PUMP STATION	54922	No	Pump Facility	-	-	Active
WHITEHALL PUMP STATION	62689	No	Pump Facility	-	-	Active
PERKINS FARM PUMP STATION	63094	No	Pump Facility	-	-	Active
DEANS MILL TREATMENT PLANT ENTRY POINT	38002	No	Sampling Station	-	-	Active
LANTERN HILL WELL ENTRY POINT	46059	No	Sampling Station	-	-	Active
STONINGTON STORAGE TANK	49633	No	Storage	-	-	Active
PEQUOT STORAGE TANK	49635	No	Storage	-	-	Active
PEQUOTSEPOS STORAGE TANK	49639	No	Storage	-	-	Active
DEANS MILL WTP CLEARWELL	54325	No	Storage	-	-	Active
WHITEHALL AVE TANK	58594	No	Storage	-	-	Active
ANN STREET TANK	60959	No	Storage	-	-	Active
FIELDCREST STORAGE TANK-REPLACED	49637	No	Storage	-	-	Inactive
DEANS MILL TREATMENT PLANT	36548	No	Treatment Plant	-	-	Active
LANTERN HILL TREATMENT PLANT	36549	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
DEANS MILL TREATMENT PLANT	36548	Filtration, Rapid Sand	Particulate removal
DEANS MILL TREATMENT PLANT	36548	Fluoridation	Other
DEANS MILL TREATMENT PLANT	36548	Inhibitor, Polyphosphate	Corrosion control
DEANS MILL TREATMENT PLANT	36548	pH Adjustment, Post	Corrosion control
DEANS MILL TREATMENT PLANT	36548	Hypochlorination, Post	Disinfection
DEANS MILL TREATMENT PLANT	36548	Sedimentation	Particulate removal
DEANS MILL TREATMENT PLANT	36548	Coagulation	Particulate removal
DEANS MILL TREATMENT PLANT	36548	pH Adjustment, Pre	Particulate removal
DEANS MILL TREATMENT PLANT	36548	Activated Carbon, Powdered	Taste / odor control
DEANS MILL TREATMENT PLANT	36548	Flocculation	Particulate removal
DEANS MILL TREATMENT PLANT	36548	Hypochlorination, Pre	Disinfection
DEANS MILL TREATMENT PLANT	36548	Inhibitor, Orthophosphate	Corrosion control
LANTERN HILL TREATMENT PLANT	36549	pH Adjustment	Corrosion control
LANTERN HILL TREATMENT PLANT	36549	Gaseous Chlorination, Pre	Disinfection
LANTERN HILL TREATMENT PLANT	36549	Permanganate	Iron removal
LANTERN HILL TREATMENT PLANT	36549	Inhibitor, Polyphosphate	Corrosion control
LANTERN HILL TREATMENT PLANT	36549	Gaseous Chlorination, Post	Disinfection
LANTERN HILL TREATMENT PLANT	36549	Fluoridation	Other
LANTERN HILL TREATMENT PLANT	36549	4-Log Treatment of Viruses	Disinfection
LANTERN HILL TREATMENT PLANT	36549	Hypochlorination, Post	Disinfection
LANTERN HILL TREATMENT PLANT	36549	Filtered	Manganese removal
LANTERN HILL TREATMENT PLANT	36549	Filtered	Iron removal
LANTERN HILL TREATMENT PLANT	36549	Flocculation	Inorganics removal

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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