Safe Drinking Water Information System (SDWIS) Federal Reporting Services

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PWS ID	MA3342000
PWS Name	WILMINGTON WATER DEPT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	Yes
Population Served	22481
County Served	Middlesex

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
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	30	Returned to Compliance	01-SEP-2022	30-SEP-2022	Yes
MR	Monitoring, Regular	Arsenic Rule	Arsenic	29	Known	01-OCT-2014	31-DEC-2014	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	28	Open	01-JAN-2013	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	12	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	26	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	17	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	16	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	19	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	4	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	11	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	18	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	24	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	8	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	15	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	5	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	9	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	7	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	13	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	6	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	10	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	22	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	21	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	20	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	14	Returned to Compliance	01-JUN-2010	30-SEP-2010	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	3	Known	01-OCT-2008	31-OCT-2008	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	2	Known	01-JUL-2007	30-SEP-2007	No
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrite	03V0001	Known	01-OCT-2002	31-DEC-2002	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	99V0001	Known	01-NOV-1998	30-NOV-1998	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	94V0001	Returned to Compliance	01-JAN-1993	-	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9130012	Known	01-JUN-1991	30-JUN-1991	Yes

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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
31	30	SOX	State Compliance achieved	06-OCT-2022	State	BOIL ORDER TERMINATED SEP 9, 2022; OTHER ACTIONS COMPLETED
29	12	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	26	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	24	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	22	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	21	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	4	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	5	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	6	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	7	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	8	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	9	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	10	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	11	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	13	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	14	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	15	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	16	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	17	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	18	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	19	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
29	20	SOX	State Compliance achieved	17-NOV-2010	State	EPA RTC
24	3	SFL	State Administrative/Compliance Order without penalty issued	05-DEC-2008	State	MISSING BACTERIOLOGICAL REPORT FOR OCTOBER 2008
22	2	SFL	State Administrative/Compliance Order without penalty issued	23-OCT-2007	State	NITRITE MONREG
15	03V0001	SFL	State Administrative/Compliance Order without penalty issued	24-OCT-2002	State	E DEC TO ALLOW ACTIVATING CONNECTION TO MWRA TOWN
5	99V0001	SIE	State Public Notification requested	16-DEC-1998	State	-
16	94V0001	SOX	State Compliance achieved	31-MAY-1994	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MWRA SUPPLY	28	Yes	Consecutive Connection	Surface water	Permanent	Active
BUTTERS ROW GP WELL 2	9	Yes	Well	Ground water	Permanent	Active
BUTTERS ROW GP WELL 1	7	Yes	Well	Ground water	Permanent	Active
TOWN PARK GP WELL	4	Yes	Well	Ground water	Permanent	Active
SALEM ST. REPLACEMENT WELLFIELD	36	Yes	Well	Ground water	Permanent	Active
BARROWS REPLACEMENT WELLFIELD	31	Yes	Well	Ground water	Permanent	Active
CHESTNUT ST. GP WELL	3	Yes	Well	Ground water	Permanent	Active
BROWNS CROSSING REPLACEMENT WELLFIELD	29	Yes	Well	Ground water	Permanent	Active
CHESTNUT ST WELL 1A	10	Yes	Well	Ground water	Permanent	Active
SHAWSHEEN AVE. GP WELL	5	Yes	Well	Ground water under the influence of surface water	Permanent	Active
SALEM ST. WELLFIELD	8	Yes	Well	Ground water	Emergency	Inactive
BARROWS WELLFIELD	2	Yes	Well	Ground water	Emergency	Inactive
BROWNS CROSSING WELLFIELD	1	Yes	Well	Ground water	Emergency	Inactive
ALDRICH RD. GP WELL	6	Yes	Well	Ground water	Emergency	Active
SALEM ST. WELL	34	Yes	Well	Ground water	Emergency	Active
BARROWS WELLFIELD PUMP	14	No	Pump Facility	-	-	Active
SHAWSHEEN AVE. GP WELL PUMP	16	No	Pump Facility	-	-	Active
CHESTNUT ST. GP WELL PUMP	18	No	Pump Facility	-	-	Active
BUTTERS ROW GP WELL 1 PUMP	19	No	Pump Facility	-	-	Active
BUTTERS ROW GP WELL 2 PUMP	20	No	Pump Facility	-	-	Active
TOWN PARK GP WELL PUMP	21	No	Pump Facility	-	-	Active
BUTTERS ROW WATER TREATMENT PLANT	22	No	Pump Facility	-	-	Active
SARGENT WATER TREATMENT PLANT	23	No	Pump Facility	-	-	Active
BROWNS CROSSING REPLACEMENT WELLFIELD	30	No	Pump Facility	-	-	Active
BARROWS REPLACEMENT WELLFIELD PUMP	32	No	Pump Facility	-	-	Active
SALEM ST. WELL PUMP	35	No	Pump Facility	-	-	Active
SALEM ST. REPLACEMENT WELLFIELD PUMP	37	No	Pump Facility	-	-	Active
BROWNS CROSSING TUBULAR WELL PUMP	13	No	Pump Facility	-	-	Inactive
SALEM STREET WELLFIELD PUMP	15	No	Pump Facility	-	-	Inactive
ALDRICH RD. GP WELL PUMP	17	No	Pump Facility	-	-	Inactive
NASSAU TANK	24	No	Storage	-	-	Active
HILLSIDE TANK	25	No	Storage	-	-	Active
INDUSTRIAL WAY TANK	26	No	Storage	-	-	Active
BALLARDVALE ST. TANK	27	No	Storage	-	-	Active
NASSAU AVENUE WATER STORAGE TANK	33	No	Storage	-	-	Active
BUTTERS ROW WATER TREATMENT PLANT	11	No	Treatment Plant	-	-	Active
E H SARGENT WATER TREATMENT PLANT	12	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
BUTTERS ROW WATER TREATMENT PLANT	11	pH Adjustment	Corrosion control
BUTTERS ROW WATER TREATMENT PLANT	11	Filtration, Rapid Sand	Particulate removal
BUTTERS ROW WATER TREATMENT PLANT	11	Activated Carbon, Granular	Taste / odor control
BUTTERS ROW WATER TREATMENT PLANT	11	Gaseous Chlorination, Post	Disinfection
BUTTERS ROW WATER TREATMENT PLANT	11	Permanganate	Iron removal
BUTTERS ROW WATER TREATMENT PLANT	11	Hypochlorination, Post	Disinfection
BUTTERS ROW WATER TREATMENT PLANT	11	Chloramines	Disinfection by-products control
BUTTERS ROW WATER TREATMENT PLANT	11	Sedimentation	Iron removal
BUTTERS ROW WATER TREATMENT PLANT	11	Aeration, Diffused	Organics removal
BUTTERS ROW WATER TREATMENT PLANT	11	Activated Carbon, Granular	Organics removal
BUTTERS ROW WATER TREATMENT PLANT	11	Coagulation	Particulate removal
BUTTERS ROW WATER TREATMENT PLANT	11	Flocculation	Particulate removal
BUTTERS ROW WATER TREATMENT PLANT	11	Sedimentation	Particulate removal
E H SARGENT WATER TREATMENT PLANT	12	pH Adjustment	Corrosion control
E H SARGENT WATER TREATMENT PLANT	12	Gaseous Chlorination, Post	Disinfection
E H SARGENT WATER TREATMENT PLANT	12	Permanganate	Iron removal
E H SARGENT WATER TREATMENT PLANT	12	Sedimentation	Iron removal
E H SARGENT WATER TREATMENT PLANT	12	Aeration, Diffused	Organics removal
E H SARGENT WATER TREATMENT PLANT	12	Activated Carbon, Granular	Organics removal
E H SARGENT WATER TREATMENT PLANT	12	Coagulation	Particulate removal
E H SARGENT WATER TREATMENT PLANT	12	Sedimentation	Particulate removal
E H SARGENT WATER TREATMENT PLANT	12	Flocculation	Particulate removal
E H SARGENT WATER TREATMENT PLANT	12	Filtration, Rapid Sand	Particulate removal
E H SARGENT WATER TREATMENT PLANT	12	Activated Carbon, Granular	Taste / odor control
E H SARGENT WATER TREATMENT PLANT	12	Chloramines	Disinfection by-products control
E H SARGENT WATER TREATMENT PLANT	12	Hypochlorination, Post	Disinfection
E H SARGENT WATER TREATMENT PLANT	12	4-Log Treatment of Viruses	Disinfection

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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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