Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MA4197000
PWS Name	WANNACOMET WATER COMPANY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	27703
County Served	Nantucket

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	115	Open	02-JUL-2025	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	116	Open	01-JUN-2025	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	113	Known	01-APR-2025	30-JUN-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	114	Known	01-APR-2025	30-JUN-2025	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	38	Returned to Compliance	01-JUL-2022	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	37	Known	01-JUL-2016	30-SEP-2016	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	36	Returned to Compliance	01-MAY-2015	31-MAY-2015	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	24	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	23	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	30	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	31	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	21	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	29	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	19	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	35	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	26	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	25	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	28	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	13	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	20	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	27	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	33	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	17	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	14	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	18	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	16	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	22	Known	01-APR-2015	30-JUN-2015	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	15	Known	01-APR-2015	30-JUN-2015	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	12	Returned to Compliance	01-SEP-2012	30-SEP-2012	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	11	Returned to Compliance	01-SEP-2011	30-SEP-2011	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	10	Returned to Compliance	01-OCT-2009	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	9	Returned to Compliance	01-OCT-2008	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	8	Returned to Compliance	20-APR-2008	-	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	6	Returned to Compliance	01-MAR-2008	31-MAR-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5	Returned to Compliance	01-MAR-2008	31-MAR-2008	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1	Returned to Compliance	01-AUG-2007	31-AUG-2007	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	2	Returned to Compliance	01-AUG-2007	31-AUG-2007	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3	Returned to Compliance	01-AUG-2007	31-AUG-2007	No
Other	Notification, State	Total Coliform Rule	Coliform (TCR)	4	Returned to Compliance	01-AUG-2007	31-AUG-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7	Known	01-APR-2007	30-APR-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	02V0045	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	02V0029	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	02V0031	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	02V0010	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	02V0056	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	02V0053	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	02V0052	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	02V0051	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	02V0050	Known	01-OCT-2001	31-DEC-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	02V0048	Known	01-OCT-2001	31-DEC-2001	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
41	116	SFO	State Administrative/Compliance Order with penalty issued	19-MAR-2026	State	COVERS 4197000 AND 4197001 FOR FAILURE TO DO PN FOR PRIOR NONS, CCR NOTICE FAILURES, LCR FAILURES
40	113	SFL	State Administrative/Compliance Order without penalty issued	04-AUG-2025	State	FTM VOC AT 10009 & 10008 & FTM NO3, NO2 & IOC AT 10008 Q2 2025
40	114	SFL	State Administrative/Compliance Order without penalty issued	04-AUG-2025	State	FTM VOC AT 10009 & 10008 & FTM NO3, NO2 & IOC AT 10008 Q2 2025
37	38	SFL	State Administrative/Compliance Order without penalty issued	16-AUG-2022	State	FAILURE TO SUBMIT
34	37	SFL	State Administrative/Compliance Order without penalty issued	22-FEB-2017	State	SAMPLE AND NOTICE
32	36	SOX	State Compliance achieved	31-AUG-2015	State	TCR: MONMCL MAY 2015
30	27	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	15	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	25	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	24	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	23	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	22	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	21	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	20	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	19	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	18	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	17	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	16	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	13	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	14	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	28	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	29	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	30	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	31	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	33	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	35	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
30	26	SFL	State Administrative/Compliance Order without penalty issued	26-AUG-2015	State	SAMPLE AND NOTICE
29	12	SOX	State Compliance achieved	30-NOV-2012	State	TCR: MONMCL SEP 2012
27	11	SOX	State Compliance achieved	29-NOV-2011	State	TCR: MONMCL SEP 2011
24	10	SOX	State Compliance achieved	10-OCT-2010	State	-
24	9	SOX	State Compliance achieved	10-OCT-2010	State	-
25	5	SOX	State Compliance achieved	27-MAY-2009	State	RTC RECORD
25	3	SOX	State Compliance achieved	27-MAY-2009	State	RTC RECORD
25	8	SOX	State Compliance achieved	27-MAY-2009	State	RTC RECORD
25	6	SOX	State Compliance achieved	27-MAY-2009	State	RTC RECORD
21	7	SFL	State Administrative/Compliance Order without penalty issued	28-MAY-2008	State	TCR: MONMCL MAR'08, MIMREP MAR'08, PLUS MINROU APR'07, PN VIOL
20	1	SOX	State Compliance achieved	06-DEC-2007	State	TCR: MONMCL AUG'07, MAJREP AUG'07, MIMREP AUG'07, STNOT AU'07
20	4	SOX	State Compliance achieved	06-DEC-2007	State	TCR: MONMCL AUG'07, MAJREP AUG'07, MIMREP AUG'07, STNOT AU'07
20	2	SOX	State Compliance achieved	06-DEC-2007	State	TCR: MONMCL AUG'07, MAJREP AUG'07, MIMREP AUG'07, STNOT AU'07
17	02V0040	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0038	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0037	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0036	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0035	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0031	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0029	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0011	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0010	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0041	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002
17	02V0042	SFL	State Administrative/Compliance Order without penalty issued	26-FEB-2002	State	COLLECT SAMPLE - ISSUE PN....SYSTEM IN COMPLIANCE 28-MAR-2002

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MILESTONE ROAD TUBULAR WELLFIELD	1	Yes	Well	Ground water	Emergency	Inactive
NORTH PASTURE WELL#4	9	Yes	Well	Ground water	Permanent	Active
STATE FOREST WELL #3	6	Yes	Well	Ground water	Permanent	Active
MILESTONE RD. WELL #2	2	Yes	Well	Ground water	Permanent	Active
WELL #16	12	Yes	Well	Ground water	Permanent	Active
WELL #15	11	Yes	Well	Ground water	Permanent	Active
NORTH PASTURE WELL#14 PUMP	10	No	Pump Facility	-	-	Active
WELL #15 PUMP	13	No	Pump Facility	-	-	Active
WELL #16 PUMP	14	No	Pump Facility	-	-	Active
TUBULAR WELLS PUMP 10 AND 11	3	No	Pump Facility	-	-	Active
MILESTONE RD. GP WELL PUMP 12	4	No	Pump Facility	-	-	Active
STATE FOREST WELL PUMP 13	7	No	Pump Facility	-	-	Active
TANK 1 WASHING POND STANDPIPE	5	No	Storage	-	-	Active
TANK #2 NORTH PASTURE	8	No	Storage	-	-	Active

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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