Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NH0481010
PWS Name	COLEBROOK WATER WORKS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1300
County Served	Coos

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	2500070	Returned to Compliance	11-SEP-2025	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2500069	Returned to Compliance	01-AUG-2025	01-SEP-2025	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	2300068	Returned to Compliance	10-DEC-2022	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2100064	Returned to Compliance	01-JUL-2021	01-OCT-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2100065	Returned to Compliance	01-JUL-2021	01-OCT-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1600063	Returned to Compliance	01-JUL-2016	01-OCT-2016	No
MCL	Maximum Contaminant Level Violation, Single Sample	Arsenic Rule	Arsenic	1600060	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1500057	Open	06-DEC-2015	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1500056	Returned to Compliance	06-DEC-2015	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1500058	Open	06-DEC-2015	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1500054	Returned to Compliance	01-JUL-2015	01-OCT-2015	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1500053	Returned to Compliance	01-JUL-2015	01-OCT-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1500055	Returned to Compliance	01-JUL-2015	01-OCT-2015	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1500052	Returned to Compliance	01-JAN-2015	31-JAN-2015	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0900043	Returned to Compliance	04-NOV-2009	-	No
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	0900041	Returned to Compliance	15-AUG-2009	-	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	0900040	Returned to Compliance	01-OCT-2008	01-JAN-2009	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	0800037	Returned to Compliance	01-JUL-2008	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0700039	Open	19-FEB-2008	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0700038	Open	19-FEB-2008	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	0700034	Returned to Compliance	01-JUL-2007	01-OCT-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0700033	Returned to Compliance	01-JUL-2007	01-OCT-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0700035	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	0720036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	0719036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	0718036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	0717036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	0716036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	0715036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	0714036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	0713036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	0712036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	0711036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	0710036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	0709036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	0708036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	0707036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	0706036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	0705036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	0704036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	0703036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	0702036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	0701036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	0700036	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	0600013	Returned to Compliance	01-JUL-2006	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0200005	Returned to Compliance	01-SEP-2002	30-SEP-2002	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	9502002	Known	01-JAN-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	9503002	Known	01-JAN-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	9504002	Known	01-JAN-1995	31-DEC-1995	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9505002	Known	01-JAN-1995	31-DEC-1995	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
2600143	2500069	SIF	State Public Notification received	17-OCT-2025	State	-
2600142	2500070	SIF	State Public Notification received	17-OCT-2025	State	-
2300134	2300068	SOX	State Compliance achieved	22-DEC-2022	State	-
2200127	2100065	SOX	State Compliance achieved	27-OCT-2021	State	-
2200126	2100064	SOX	State Compliance achieved	27-OCT-2021	State	-
1700120	1600063	SOX	State Compliance achieved	14-DEC-2016	State	-
1600111	1600060	SO0	State no longer subject to Rule	22-JUL-2016	State	-
1600101	1500056	SOX	State Compliance achieved	12-JAN-2016	State	-
1600102	1500054	SOX	State Compliance achieved	12-JAN-2016	State	-
1600105	1500055	SOX	State Compliance achieved	12-JAN-2016	State	-
1600099	1500053	SOX	State Compliance achieved	12-JAN-2016	State	-
1500089	1500052	SOX	State Compliance achieved	19-FEB-2015	State	-
1000069	0900041	SOX	State Compliance achieved	29-DEC-2009	State	-
1000068	0900043	SOX	State Compliance achieved	30-NOV-2009	State	-
900061	0700033	SOX	State Compliance achieved	26-MAY-2009	State	-
900062	0900040	SOX	State Compliance achieved	26-MAY-2009	State	-
900061	0700034	SOX	State Compliance achieved	26-MAY-2009	State	-
800055	0800037	SOX	State Compliance achieved	15-AUG-2008	State	-
800053	0703036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0720036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0719036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0718036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0717036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0716036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0715036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0714036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0713036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0712036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0711036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0710036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0709036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0708036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0707036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0706036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0705036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0704036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0702036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0701036	SOX	State Compliance achieved	30-JAN-2008	State	-
800053	0700036	SOX	State Compliance achieved	30-JAN-2008	State	-
800052	0700035	SOX	State Compliance achieved	30-JAN-2008	State	-
600019	0600013	SIA	State Violation/Reminder Notice	04-AUG-2006	State	-
300015	0200005	SOX	State Compliance achieved	06-MAR-2003	State	-
9700006	9507002	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9508002	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9509002	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9510002	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9511002	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9500001	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9500002	SIF	State Public Notification received	21-NOV-1996	State	-
9700006	9512002	SIF	State Public Notification received	21-NOV-1996	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 1 /10' W OF PH	3	Yes	Well	Ground water	Permanent	Active
PW 7 /GRW /1205' W OF RTE 3	6	Yes	Well	Ground water	Permanent	Inactive
PW 5 /GRW /1200' W OF RTE 3	5	Yes	Well	Ground water	Permanent	Inactive
GPW 2 /60' S OF PH	4	Yes	Well	Ground water	Permanent	Active
PUMPHOUSE /GPW 1	503	No	Treatment Plant	-	-	Active
PUMPHOUSE /GPW 2	504	No	Treatment Plant	-	-	Active
PUMPHOUSE /TREATMENT FACILITY	505	No	Treatment Plant	-	-	Inactive
PUMPHOUSE /TREATMENT FACILITY	506	No	Treatment Plant	-	-	Inactive

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
PUMPHOUSE /GPW 1	503	Hypochlorination, Post	Disinfection
PUMPHOUSE /GPW 2	504	Hypochlorination, Post	Disinfection
PUMPHOUSE /TREATMENT FACILITY	505	Hypochlorination, Post	Disinfection
PUMPHOUSE /TREATMENT FACILITY	505	pH Adjustment, Post	Corrosion control
PUMPHOUSE /TREATMENT FACILITY	506	Hypochlorination, Post	Disinfection
PUMPHOUSE /TREATMENT FACILITY	506	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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