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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NH1531010
PWS Name	MERRIMACK VILLAGE DIST
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	25500
County Served	Hillsborough

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 and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	2100041	Returned to Compliance	01-JUL-2021	01-OCT-2021	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	2100038	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	2100039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	2101039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	2102039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	2103039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	2104039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	2105039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	2106039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	2107039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	2108039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	2109039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	2110039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	2100036	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	2100037	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	2120039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	2119039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	2118039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	2117039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	2116039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	2115039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	2114039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	2113039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	2112039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	2111039	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1800035	Returned to Compliance	01-OCT-2017	01-JAN-2018	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0900033	Returned to Compliance	08-SEP-2009	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	0900034	Returned to Compliance	01-JUL-2009	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0900032	Returned to Compliance	01-JUL-2009	31-JUL-2009	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	0900031	Returned to Compliance	01-OCT-2008	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0100028	Returned to Compliance	01-OCT-2000	31-OCT-2000	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0000027	Returned to Compliance	01-AUG-2000	31-AUG-2000	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0000026	Returned to Compliance	01-JUL-2000	31-JUL-2000	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0000025	Returned to Compliance	01-JAN-2000	31-JAN-2000	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9700024	Returned to Compliance	01-JUL-1997	31-JUL-1997	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	9500023	Known	01-NOV-1994	30-NOV-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9300022	Returned to Compliance	01-DEC-1992	31-DEC-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9300019	Returned to Compliance	01-NOV-1992	30-NOV-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9200015	Returned to Compliance	01-JUN-1992	30-JUN-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9200011	Returned to Compliance	01-OCT-1991	31-OCT-1991	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9100006	Returned to Compliance	01-JUL-1991	31-JUL-1991	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9100002	Returned to Compliance	01-JUN-1991	30-JUN-1991	Yes

1 - 42 of 42

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2200094	2119039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2120039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2117039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2116039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2115039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2114039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2113039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2112039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2111039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2110039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2109039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2108039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2107039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2106039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2105039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2104039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2103039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2102039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2101039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2100039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200094	2118039	SOX	State Compliance achieved	27-JAN-2022	State	-
2200092	2100041	SOX	State Compliance achieved	15-OCT-2021	State	-
2100087	2100038	SOX	State Compliance achieved	27-AUG-2021	State	-
2100086	2100037	SOX	State Compliance achieved	27-AUG-2021	State	-
2100085	2100036	SOX	State Compliance achieved	27-AUG-2021	State	-
1800072	1800035	SOX	State Compliance achieved	09-FEB-2018	State	-
1000069	0900034	SOX	State Compliance achieved	02-SEP-2010	State	-
1000068	0900032	SOX	State Compliance achieved	16-FEB-2010	State	-
1000066	0900033	SOX	State Compliance achieved	21-OCT-2009	State	-
900061	0900031	SIF	State Public Notification received	02-DEC-2008	State	-
0100054	0000026	SOX	State Compliance achieved	06-APR-2001	State	-
0100054	0000027	SOX	State Compliance achieved	06-APR-2001	State	-
0100054	0100028	SOX	State Compliance achieved	06-APR-2001	State	-
0100054	0000025	SOX	State Compliance achieved	06-APR-2001	State	-
9800039	9700024	SOX	State Compliance achieved	28-JUL-1998	State	-
9500035	9500023	SIF	State Public Notification received	09-NOV-1994	State	-
9200032	9300019	SOX	State Compliance achieved	14-JUL-1993	State	-
9200032	9200015	SOX	State Compliance achieved	14-JUL-1993	State	-
9200032	9300022	SOX	State Compliance achieved	14-JUL-1993	State	-
9200021	9200011	SFJ	State Formal Notice of Violation issued	06-JUL-1992	State	-
9200021	9100006	SFJ	State Formal Notice of Violation issued	06-JUL-1992	State	-
9200021	9100002	SFJ	State Formal Notice of Violation issued	06-JUL-1992	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
GPW 4R/MVD 4R	11	Yes	Well	Ground water	Permanent	Active
GPW 4 /MVD 4	4	Yes	Well	Ground water	Permanent	Inactive
GPW 3 /CAMP SARGENT	3	Yes	Well	Ground water	Permanent	Inactive
GPW 1 /TALLANT RD	1	Yes	Well	Ground water	Permanent	Inactive
GPW 8 /450' SE OF WELL 7 HOLLIS	9	Yes	Well	Ground water	Permanent	Active
GPW 2A /BERRY LN	8	Yes	Well	Ground water	Permanent	Active
GPW 7 /WITCHES BROOK WELL HOLLIS	7	Yes	Well	Ground water	Permanent	Active
GPW 5 /MVD 5	5	Yes	Well	Ground water	Permanent	Active
GPW 10/MVD 9/OFF BERRY LN	12	Yes	Well	Ground water	Permanent	Active
TREATMENT FOR WELLS 4/5 WTP OFF FRONT ST	509	No	Treatment Plant	-	-	Active
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	No	Treatment Plant	-	-	Active
TREATMENT FOR WELLS 2/9 WTP OFF BERRY LN	512	No	Treatment Plant	-	-	Active
FRONT ST PUMP STATION 5	501	No	Treatment Plant	-	-	Inactive
PUMPHOUSE 7 /OFF RTE 101A HOLLIS	502	No	Treatment Plant	-	-	Inactive
TREATMENT HOUSE /TALLENT RD	503	No	Treatment Plant	-	-	Inactive
TREATMENT HOUSE /GPW 3 CAMP SARGENT	504	No	Treatment Plant	-	-	Inactive
TREATMENT HOUSE /GPW 2A BERRY LN	505	No	Treatment Plant	-	-	Inactive
WTP OFF RTE 101 A	508	No	Treatment Plant	-	-	Inactive

1 - 18 of 18

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
FRONT ST PUMP STATION 5	501	Hypochlorination, Post	Disinfection
FRONT ST PUMP STATION 5	501	pH Adjustment, Post	Corrosion control
FRONT ST PUMP STATION 5	501	Inhibitor, Orthophosphate	Corrosion control
FRONT ST PUMP STATION 5	501	Sequestration	Iron removal
PUMPHOUSE 7 /OFF RTE 101A HOLLIS	502	Hypochlorination, Post	Disinfection
PUMPHOUSE 7 /OFF RTE 101A HOLLIS	502	pH Adjustment, Post	Corrosion control
PUMPHOUSE 7 /OFF RTE 101A HOLLIS	502	Inhibitor, Orthophosphate	Corrosion control
PUMPHOUSE 7 /OFF RTE 101A HOLLIS	502	Sequestration	Iron removal
TREATMENT HOUSE /GPW 3 CAMP SARGENT	504	Hypochlorination, Post	Disinfection
TREATMENT HOUSE /GPW 3 CAMP SARGENT	504	pH Adjustment, Post	Corrosion control
TREATMENT HOUSE /GPW 3 CAMP SARGENT	504	Inhibitor, Orthophosphate	Corrosion control
TREATMENT HOUSE /GPW 3 CAMP SARGENT	504	Sequestration	Iron removal
TREATMENT HOUSE /GPW 2A BERRY LN	505	Hypochlorination, Post	Disinfection
TREATMENT HOUSE /GPW 2A BERRY LN	505	pH Adjustment, Post	Corrosion control
TREATMENT HOUSE /GPW 2A BERRY LN	505	Inhibitor, Orthophosphate	Corrosion control
TREATMENT HOUSE /GPW 2A BERRY LN	505	Sequestration	Iron removal
TREATMENT HOUSE /GPW 2A BERRY LN	505	Activated Carbon, Granular	Organics removal
WTP OFF RTE 101 A	508	Filtration, Greensand	Inorganics removal
WTP OFF RTE 101 A	508	Filtration, Greensand	Manganese removal
WTP OFF RTE 101 A	508	Hypochlorination, Post	Disinfection
WTP OFF RTE 101 A	508	Hypochlorination, Pre	Disinfection
WTP OFF RTE 101 A	508	Lime - Soda Ash Addition	Iron removal
WTP OFF RTE 101 A	508	pH Adjustment, Post	Corrosion control
WTP OFF RTE 101 A	508	Inhibitor, Polyphosphate	Corrosion control
TREATMENT FOR WELLS 4/5 WTP OFF FRONT ST	509	Activated Carbon, Granular	Organics removal
TREATMENT FOR WELLS 4/5 WTP OFF FRONT ST	509	Hypochlorination, Post	Disinfection
TREATMENT FOR WELLS 4/5 WTP OFF FRONT ST	509	Inhibitor, Polyphosphate	Corrosion control
TREATMENT FOR WELLS 4/5 WTP OFF FRONT ST	509	Inhibitor, Orthophosphate	Corrosion control
TREATMENT FOR WELLS 4/5 WTP OFF FRONT ST	509	pH Adjustment, Post	Corrosion control
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Hypochlorination, Pre	Disinfection
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Filtration, Greensand	Manganese removal
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Filtration, Greensand	Iron removal
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Hypochlorination, Post	Disinfection
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	pH Adjustment, Post	Corrosion control
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Inhibitor, Polyphosphate	Corrosion control
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Inhibitor, Orthophosphate	Corrosion control
TREATMENT FOR WELLS 7/8 WTP OFF RTE 101A	510	Activated Carbon, Granular	Organics removal
TREATMENT FOR WELLS 2/9 WTP OFF BERRY LN	512	Activated Carbon, Granular	Organics removal
TREATMENT FOR WELLS 2/9 WTP OFF BERRY LN	512	Hypochlorination, Post	Disinfection
TREATMENT FOR WELLS 2/9 WTP OFF BERRY LN	512	Inhibitor, Polyphosphate	Corrosion control
TREATMENT FOR WELLS 2/9 WTP OFF BERRY LN	512	Inhibitor, Orthophosphate	Corrosion control
TREATMENT FOR WELLS 2/9 WTP OFF BERRY LN	512	pH Adjustment, Post	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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