Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NH2111010
PWS Name	SEABROOK WATER DEPT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	14000
County Served	Rockingham

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
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2500085	Returned to Compliance	10-JAN-2025	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2500084	Returned to Compliance	01-DEC-2024	01-JAN-2025	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	2100083	Returned to Compliance	14-AUG-2021	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1100082	Returned to Compliance	01-SEP-2011	30-SEP-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	1100080	Returned to Compliance	01-JAN-2011	31-MAR-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	1100079	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	1000078	Returned to Compliance	01-JUL-2010	30-SEP-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	1000077	Returned to Compliance	01-APR-2010	30-JUN-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	1000076	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	1000075	Returned to Compliance	01-OCT-2009	31-DEC-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0900074	Returned to Compliance	01-JUL-2009	30-SEP-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0900073	Returned to Compliance	01-APR-2009	30-JUN-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0900072	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0900071	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0800070	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0800069	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0800068	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0800067	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0700066	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	0700064	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9700055	Returned to Compliance	01-SEP-1997	30-SEP-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9700054	Returned to Compliance	01-AUG-1997	31-AUG-1997	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	9702053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	9601052	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	9700053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	9701053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	9703053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	9704053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9705053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	9706053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	9707053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	9708053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	9709053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	9710053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	9711053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	9712053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	9713053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	9714053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	9715053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	9716053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	9717053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	9718053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	9719053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	9720053	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	9600052	Returned to Compliance	01-OCT-1996	31-DEC-1996	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	9600045	Returned to Compliance	01-SEP-1996	30-SEP-1996	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9605048	Returned to Compliance	01-JUL-1996	30-SEP-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	9606048	Returned to Compliance	01-JUL-1996	30-SEP-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	9607048	Returned to Compliance	01-JUL-1996	30-SEP-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	9608048	Returned to Compliance	01-JUL-1996	30-SEP-1996	No

1 - 50 of 221

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2500183	2500084	SIF	State Public Notification received	31-JAN-2025	State	-
2500182	2500085	SIF	State Public Notification received	31-JAN-2025	State	-
2200175	2100083	SIF	State Public Notification received	06-MAY-2022	State	-
1200171	1100082	SOX	State Compliance achieved	21-MAR-2012	State	-
1100166	0700064	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	1100080	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	1100079	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	1000078	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	1000077	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	1000076	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	1000075	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0900074	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0900073	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0900072	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0900071	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0800070	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0800069	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0700066	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0800067	SOX	State Compliance achieved	10-JUN-2011	State	-
1100166	0800068	SOX	State Compliance achieved	10-JUN-2011	State	-
9900094	9200009	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9700055	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9700054	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9600045	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9600044	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9600036	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9200018	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9500034	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9400031	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9300029	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9300025	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9300022	SOX	State Compliance achieved	05-MAY-1999	State	-
9900094	9500035	SOX	State Compliance achieved	05-MAY-1999	State	-
9700090	9300037	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9300038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9301038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9302038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9303038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9304038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9305038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9306038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9307038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9308038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9309038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9310038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9311038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9312038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9313038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9314038	SOX	State Compliance achieved	29-SEP-1997	State	-
9700090	9315038	SOX	State Compliance achieved	29-SEP-1997	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 /WATTS WELL	13	Yes	Well	Ground water	Emergency	Inactive
GPW 5 /IN MILL LANE PUMP HOUSE /AUX	5	Yes	Well	Ground water	Permanent	Inactive
GPW 6 /NW OF MILL LANE PH /AUX	10	Yes	Well	Ground water	Permanent	Inactive
BRW 4 /SW NEAR RTE 107	9	Yes	Well	Ground water	Permanent	Active
BRW 3 /NW NEAR RTE 107	8	Yes	Well	Ground water	Permanent	Active
BRW 2 /SE NEAR RTE 107	7	Yes	Well	Ground water	Permanent	Active
BRW 1 /NE NEAR RTE 107	6	Yes	Well	Ground water	Permanent	Active
GPW 4 /IN RILEY PH 4 /SE OF GPW 3	4	Yes	Well	Ground water	Permanent	Active
GPW 3 /IN RILEY PH 3 /NW OF GPW 4	3	Yes	Well	Ground water	Permanent	Active
GPW 2 /TRUE RD FURTHEST /W OF GPW 1	2	Yes	Well	Ground water	Permanent	Active
BRW 5.2 /350' SE OF BRW 5	15	Yes	Well	Ground water	Permanent	Active
BRW 5.1 /525' S OF BRW 5	14	Yes	Well	Ground water	Permanent	Active
GPW 7 /I 97 WELL	12	Yes	Well	Ground water	Permanent	Active
BRW 5 /800' N OF PS /OLD NEW BOSTON RD	11	Yes	Well	Ground water	Permanent	Active
GPW 1 /TRUE RD /E OF GPW 2	1	Yes	Well	Ground water	Permanent	Active
TRUE WELL FIELD TREATMENT PLANT /GPW 1	501	No	Treatment Plant	-	-	Active
RILEY PUMPHOUSE /GPW 3	503	No	Treatment Plant	-	-	Active
RILEY WELL FIELD TREATMENT PLANT /GPW 7	512	No	Treatment Plant	-	-	Active
SEABROOK WTP	516	No	Treatment Plant	-	-	Active
TRUE WELL FIELD TREATMENT PLANT /GPW 2	502	No	Treatment Plant	-	-	Inactive
RILEY PUMPHOUSE /GPW 4	504	No	Treatment Plant	-	-	Inactive
KENSINGTON RD TREATMENT PLANT /BRW 1	506	No	Treatment Plant	-	-	Inactive
KENSINGTON RD TREATMENT PLANT /BRW 2	507	No	Treatment Plant	-	-	Inactive
KENSINGTON RD TREATMENT PLANT /BRW 3	508	No	Treatment Plant	-	-	Inactive
KENSINGTON RD TREATMENT PLANT /BRW 4	509	No	Treatment Plant	-	-	Inactive
TREATMENT PLANT /OLD NEW BOSTON RD /BRW 5	511	No	Treatment Plant	-	-	Inactive
WATTS WELL /PUMPHOUSE	513	No	Treatment Plant	-	-	Inactive
SEABROOK WTP/007/008/009	514	No	Treatment Plant	-	-	Inactive
SEABROOK WTP	515	No	Treatment Plant	-	-	Inactive

1 - 29 of 29

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TRUE WELL FIELD TREATMENT PLANT /GPW 1	501	Hypochlorination, Post	Disinfection
TRUE WELL FIELD TREATMENT PLANT /GPW 2	502	Hypochlorination, Post	Disinfection
RILEY PUMPHOUSE /GPW 3	503	Hypochlorination, Post	Disinfection
RILEY PUMPHOUSE /GPW 4	504	Hypochlorination, Post	Disinfection
RILEY PUMPHOUSE /GPW 4	504	Inhibitor, Hexametaphosphate	Corrosion control
KENSINGTON RD TREATMENT PLANT /BRW 1	506	Hypochlorination, Post	Disinfection
KENSINGTON RD TREATMENT PLANT /BRW 1	506	Inhibitor, Hexametaphosphate	Corrosion control
KENSINGTON RD TREATMENT PLANT /BRW 2	507	Hypochlorination, Post	Disinfection
KENSINGTON RD TREATMENT PLANT /BRW 2	507	Inhibitor, Hexametaphosphate	Corrosion control
KENSINGTON RD TREATMENT PLANT /BRW 3	508	Hypochlorination, Post	Disinfection
KENSINGTON RD TREATMENT PLANT /BRW 3	508	Inhibitor, Hexametaphosphate	Corrosion control
KENSINGTON RD TREATMENT PLANT /BRW 4	509	Hypochlorination, Post	Disinfection
KENSINGTON RD TREATMENT PLANT /BRW 4	509	Inhibitor, Hexametaphosphate	Corrosion control
TREATMENT PLANT /OLD NEW BOSTON RD /BRW 5	511	Hypochlorination, Post	Disinfection
TREATMENT PLANT /OLD NEW BOSTON RD /BRW 5	511	Inhibitor, Hexametaphosphate	Corrosion control
RILEY WELL FIELD TREATMENT PLANT /GPW 7	512	Hypochlorination, Post	Disinfection
SEABROOK WTP/007/008/009	514	Hypochlorination, Post	Disinfection
SEABROOK WTP	515	Hypochlorination, Post	Disinfection
SEABROOK WTP	515	Inhibitor, Hexametaphosphate	Corrosion control
SEABROOK WTP	515	Coagulation	Inorganics removal
SEABROOK WTP	515	Hypochlorination, Pre	Disinfection
SEABROOK WTP	515	Filtration, Greensand	Inorganics removal
SEABROOK WTP	515	Filtration, Greensand	Manganese removal
SEABROOK WTP	515	Aeration, Packed Tower	Radionuclides removal
SEABROOK WTP	516	Hypochlorination, Post	Disinfection
SEABROOK WTP	516	Coagulation	Inorganics removal
SEABROOK WTP	516	Hypochlorination, Pre	Disinfection
SEABROOK WTP	516	Filtration, Greensand	Inorganics removal
SEABROOK WTP	516	Filtration, Greensand	Manganese removal
SEABROOK WTP	516	Aeration, Packed Tower	Radionuclides removal
SEABROOK WTP	516	pH Adjustment, Post	Corrosion control

1 - 31 of 31

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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