Safe Drinking Water Information System (SDWIS) Federal Reporting Services

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PWS ID	CT1410011
PWS Name	CTWC - THOMPSON SYSTEM
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1070
County Served	Windham

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
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	8948249	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	8948235	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	8948233	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	8948248	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	8948250	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	8948243	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	8948242	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	8948241	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	8948240	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	8948239	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	8948245	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	8948210	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	8948211	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	8948212	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	8948213	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	8948216	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	8948217	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	8948218	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	8948219	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	8948220	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	8948221	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	8948222	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	8948223	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	8948224	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	8948225	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	8948226	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	8948227	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	8948229	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	8948230	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	8948231	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	8948232	Returned to Compliance	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	8945104	Returned to Compliance	01-JAN-2001	31-DEC-2003	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	8945904	Returned to Compliance	01-JAN-2001	31-DEC-2003	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	45895	Returned to Compliance	01-FEB-1995	28-FEB-1995	Yes

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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
70290	8948225	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948249	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948248	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948210	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948211	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948212	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948213	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948216	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948217	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948218	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948219	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948220	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948221	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948222	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948223	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948224	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948250	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948226	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948227	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948229	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948230	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948231	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948232	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948233	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948235	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948239	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948240	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948241	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948242	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948243	SOX	State Compliance achieved	24-OCT-2015	State	-
70290	8948245	SOX	State Compliance achieved	24-OCT-2015	State	-
69504	8945904	SOX	State Compliance achieved	29-JUN-2004	State	-
69504	8945104	SOX	State Compliance achieved	29-JUN-2004	State	-
69395	45895	SOX	State Compliance achieved	24-MAR-1995	State	-

1 - 34 of 34

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 1	27720	Yes	Well	Ground water under the influence of surface water	Emergency	Inactive
WELL 7	58567	Yes	Well	Ground water	Permanent	Active
WELL 5	46057	Yes	Well	Ground water	Permanent	Active
WELL 3	27721	Yes	Well	Ground water	Permanent	Active
WELL 6	26584	Yes	Well	Ground water	Permanent	Active
WELL 2	26568	Yes	Well	Ground water	Permanent	Active
WELL 4	26567	Yes	Well	Ground water	Other	Inactive
DISTRIBUTION SYSTEM	23989	No	Distribution System/Zone	-	-	Active
BUCKLEY HILL PUMP STATION	49476	No	Pump Facility	-	-	Inactive
ENTRY POINT - WELLS 2, 3, 5, 6, & 7	58568	No	Sampling Station	-	-	Active
ENTRY POINT - WELLS 2, 3, 5 & 6	37987	No	Sampling Station	-	-	Inactive
ENTRY POINT - WELLS 3 AND 5	46056	No	Sampling Station	-	-	Inactive
RIVERSIDE DRIVE TANK	49474	No	Storage	-	-	Active
THOMPSON TANK	59058	No	Storage	-	-	Active
THOMPSON STATION	36553	No	Treatment Plant	-	-	Active
THOMPSON STATION - WELLS 3 AND 5	46058	No	Treatment Plant	-	-	Inactive

1 - 16 of 16

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
THOMPSON STATION	36553	Inhibitor, Orthophosphate	Corrosion control
THOMPSON STATION	36553	pH Adjustment	Corrosion control
THOMPSON STATION	36553	Hypochlorination, Post	Disinfection
THOMPSON STATION	36553	4-Log Treatment of Viruses	Disinfection
THOMPSON STATION - WELLS 3 AND 5	46058	Inhibitor, Orthophosphate	Corrosion control
THOMPSON STATION - WELLS 3 AND 5	46058	pH Adjustment	Corrosion control

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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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