Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MA4310003
PWS Name	ONSET FIRE DISTRICTWATER DEPT.
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	5392
County Served	Plymouth

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 Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	38	Returned to Compliance	01-JUL-2022	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	18	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	23	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	30	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	31	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	21	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	29	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	19	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	15	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	22	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	16	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	14	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	24	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	17	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	33	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	27	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	20	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	13	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	28	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	25	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	26	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	37	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	36	Known	01-OCT-2020	31-DEC-2020	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	35	Known	01-OCT-2020	31-DEC-2020	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	12	Returned to Compliance	01-OCT-2019	-	No
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	11	Known	01-MAY-2019	31-MAY-2019	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	10	Returned to Compliance	01-NOV-2013	30-NOV-2013	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	9	Returned to Compliance	01-FEB-2013	28-FEB-2013	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	8	Returned to Compliance	01-JAN-2013	31-JAN-2013	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7	Returned to Compliance	01-DEC-2012	31-DEC-2012	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	6	Returned to Compliance	01-NOV-2012	30-NOV-2012	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5	Returned to Compliance	01-FEB-2012	29-FEB-2012	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	3	Returned to Compliance	01-NOV-2011	30-NOV-2011	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2	Returned to Compliance	01-OCT-2011	31-OCT-2011	Yes
Other	Notification, State	Total Coliform Rule	Coliform (TCR)	4	Returned to Compliance	01-OCT-2011	31-OCT-2011	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1	Returned to Compliance	01-OCT-2009	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	01V0001	Returned to Compliance	01-JAN-1998	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	98V0001	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	96V0001	Known	01-MAR-1996	31-MAR-1996	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	95V0001	Returned to Compliance	01-JUN-1995	30-JUN-1995	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	92V0004	Known	01-OCT-1991	31-DEC-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	92V0003	Known	01-OCT-1991	31-DEC-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	92V0005	Known	01-OCT-1991	31-DEC-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	92V0001	Known	01-OCT-1991	31-DEC-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	92V0002	Known	01-OCT-1991	31-DEC-1991	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	92V0006	Known	01-OCT-1991	31-DEC-1991	No

1 - 46 of 46

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
33	38	SFL	State Administrative/Compliance Order without penalty issued	16-AUG-2022	State	LATE CCR SUBITTAL
32	12	SOX	State Compliance achieved	19-MAR-2021	State	NOTICE POSTED AND MAILED TO CUSTOMERS
29	11	SFL	State Administrative/Compliance Order without penalty issued	10-MAY-2019	State	ECOLI MCL BOIL ORDER ISSUED 5/10/19
26	10	SOX	State Compliance achieved	28-FEB-2014	State	TCR: MONMCL NOV 2013
24	8	SOX	State Compliance achieved	30-MAY-2013	State	TCR: MONMCL JAN - MAJOR ROUTINE FEB 2013
24	9	SOX	State Compliance achieved	30-MAY-2013	State	TCR: MONMCL JAN - MAJOR ROUTINE FEB 2013
22	7	SOX	State Compliance achieved	21-FEB-2013	State	TCR: MONMCL NOVE & DEC 2012
22	6	SOX	State Compliance achieved	21-FEB-2013	State	TCR: MONMCL NOVE & DEC 2012
20	5	SOX	State Compliance achieved	18-APR-2012	State	TCR: MONMCL FEB 2012
18	2	SOX	State Compliance achieved	31-JAN-2012	State	TCR: MONMCL OCT/NOV & SNOT 2011
18	3	SOX	State Compliance achieved	31-JAN-2012	State	TCR: MONMCL OCT/NOV & SNOT 2011
18	4	SOX	State Compliance achieved	31-JAN-2012	State	TCR: MONMCL OCT/NOV & SNOT 2011
16	1	SOX	State Compliance achieved	10-OCT-2010	State	-
13	01V0001	SOX	State Compliance achieved	26-JUN-2001	State	-
8	98V0001	SFL	State Administrative/Compliance Order without penalty issued	06-OCT-1997	State	-
7	96V0001	SFL	State Administrative/Compliance Order without penalty issued	21-MAR-1996	State	SAMPLED REQUIRED LOCATIONS, PUBLISHED PUBLIC NOTICE.
6	95V0001	SOX	State Compliance achieved	14-JUL-1995	State	MCL TO JUNE95, PUBLIC NOTICE COMPLETED.
92E0001	92V0002	SFJ	State Formal Notice of Violation issued	27-MAY-1992	State	COMPLIED 5/22/92
92E0001	92V0001	SFJ	State Formal Notice of Violation issued	27-MAY-1992	State	COMPLIED 5/22/92
92E0001	92V0003	SFJ	State Formal Notice of Violation issued	27-MAY-1992	State	COMPLIED 5/22/92
92E0001	92V0005	SFJ	State Formal Notice of Violation issued	27-MAY-1992	State	COMPLIED 5/22/92
92E0001	92V0006	SFJ	State Formal Notice of Violation issued	27-MAY-1992	State	COMPLIED 5/22/92
92E0001	92V0004	SFJ	State Formal Notice of Violation issued	27-MAY-1992	State	COMPLIED 5/22/92

1 - 23 of 23

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
SAND POND RES.	1	Yes	Intake	Surface water	Emergency	Inactive
WELL # 5	9	Yes	Well	Ground water	Permanent	Active
WELL # 3	3	Yes	Well	Ground water	Permanent	Active
WELL # 4	2	Yes	Well	Ground water	Permanent	Active
WELL # 7	17	Yes	Well	Ground water	Permanent	Active
WELL 6	10	Yes	Well	Ground water	Permanent	Active
PUMPING STATION 6	11	No	Pump Facility	-	-	Active
PUMP STATION 5	12	No	Pump Facility	-	-	Active
STATION # 7	20	No	Pump Facility	-	-	Active
WELL 4 PUMP	4	No	Pump Facility	-	-	Active
WELL 3 PUMP	5	No	Pump Facility	-	-	Active
SAND POND PUMP	7	No	Pump Facility	-	-	Active
WELL # 7 PUMP	18	No	Pump Facility	-	-	Inactive
LOOKOUT HILL STANDPIPE	8	No	Storage	-	-	Active
STATION 3	13	No	Treatment Plant	-	-	Active
STATION 4	14	No	Treatment Plant	-	-	Active
STATION 5	15	No	Treatment Plant	-	-	Active
STATION 6	16	No	Treatment Plant	-	-	Active
STATION 7	19	No	Treatment Plant	-	-	Active

1 - 19 of 19

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
STATION 3	13	pH Adjustment	Corrosion control
STATION 4	14	pH Adjustment	Corrosion control
STATION 5	15	pH Adjustment	Corrosion control
STATION 6	16	pH Adjustment	Corrosion control
STATION 7	19	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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