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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MA2270000
PWS Name	SHIRLEY WATER DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	4165
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
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	44	Open	01-JUL-2026	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	38	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	41	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	39	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	36	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	42	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	37	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	40	Known	01-AUG-2025	31-AUG-2025	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	33	Returned to Compliance	01-OCT-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	32	Known	01-AUG-2024	31-AUG-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	31	Known	01-AUG-2024	30-AUG-2024	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	28	Returned to Compliance	15-DEC-2016	-	No
Other	Notification, State	Ground Water Rule	Groundwater Rule	29	Open	14-DEC-2016	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	27	Returned to Compliance	01-DEC-2016	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	26	Returned to Compliance	01-JUL-2015	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	25	Returned to Compliance	01-AUG-2010	31-AUG-2010	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	24	Returned to Compliance	01-NOV-2009	30-NOV-2009	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	19	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	3	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	17	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	7	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	18	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	11	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	23	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	14	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	13	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	16	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	1	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	8	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	15	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	21	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	5	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	12	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	2	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	6	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	4	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	10	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	9	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	04V0001	Returned to Compliance	01-SEP-2003	30-SEP-2003	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	00V0001	Returned to Compliance	01-AUG-2000	31-AUG-2000	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	98V0013	Returned to Compliance	01-MAY-1998	31-MAY-1998	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	98V0001	Returned to Compliance	01-MAR-1998	31-MAR-1998	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	98V0003	Known	01-OCT-1997	31-DEC-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	98V0007	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	98V0008	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	98V0009	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Tritium	98V0010	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	38-STRONTIUM-90	98V0012	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	98V0002	Known	01-APR-1997	30-JUN-1997	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	98V0004	Known	01-APR-1997	30-JUN-1997	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
43	41	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
43	38	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
43	37	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
43	36	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
43	40	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
43	39	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
43	42	SFL	State Administrative/Compliance Order without penalty issued	10-DEC-2025	State	M&R Q3 THM/HAA5(AUG): DBP2 PFAS: 02G, 04G (SEP)
42	33	SOX	State Compliance achieved	25-SEP-2025	State	PFAS(OCT 2024): 04G, Q3-2024: LCR-20 TAPS
38	31	SFL	State Administrative/Compliance Order without penalty issued	12-DEC-2024	State	M&R THM/HAA5 DBP2 (AUG 2024)
38	32	SFL	State Administrative/Compliance Order without penalty issued	12-DEC-2024	State	M&R THM/HAA5 DBP2 (AUG 2024)
29	27	SOX	State Compliance achieved	03-MAR-2017	State	GWR & PN VIOLATIONS (RTC) - DECEMBER 2016
29	28	SOX	State Compliance achieved	03-MAR-2017	State	GWR & PN VIOLATIONS (RTC) - DECEMBER 2016
25	26	SFJ	State Formal Notice of Violation issued	04-AUG-2015	State	CCR
24	25	SOX	State Compliance achieved	20-SEP-2010	State	TCR MONTHLY MAX. (MCL) FOR AUGUST 2010
22	24	SOX	State Compliance achieved	05-FEB-2010	State	TCR MONTHLY MAX. (MCL) FOR NOVEMBER 2009
20	1	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	23	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	21	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	19	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	18	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	17	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	16	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	15	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	14	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	13	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	12	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	11	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	10	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	9	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	2	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	3	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	4	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	5	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	6	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	7	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
20	8	SOX	State Compliance achieved	16-APR-2009	State	VOC 02G, 03G Q1 2008
17	04V0001	SOX	State Compliance achieved	31-OCT-2003	State	TCR MCL VIOLATION SEPT 2003
13	00V0001	SOX	State Compliance achieved	28-NOV-2000	State	TCR MONTHLY MCL VIOLATION-AUGUST 2000
10	98V0013	SOX	State Compliance achieved	28-JUL-1998	State	BACTERIA MONTHLY MCL VIOLATION; MAY 1998; NON-CE-98-5013
8	98V0001	SOX	State Compliance achieved	27-APR-1998	State	BACTERIA ACUTE MCL VIOLATION; MARCH 1998
7	98V0008	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0002	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0012	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0003	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0007	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0004	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0010	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
7	98V0009	SFL	State Administrative/Compliance Order without penalty issued	31-MAR-1998	State	NITRATE 2QT-3QT 97; NITRITE 2QT 97; RADIO 2QT 97
5	97V0001	SOX	State Compliance achieved	10-DEC-1996	State	BACT MCL OCTOBER/1996
6	97V0002	SOX	State Compliance achieved	10-DEC-1996	State	BACT MCL NOVEMBER/1996

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MCI SHIRLEY INTERCONNECTION	15	Yes	Consecutive Connection	Ground water	Permanent	Active
PATTERSON ROAD GRAVEL PACKED WELL	3	Yes	Well	Ground water	Permanent	Active
CATACUNEMAUG ROAD GRAVEL PACKED WELL	2	Yes	Well	Ground water	Permanent	Active
WALKER WELL	16	Yes	Well	Ground water	Permanent	Active
SAMSON DUG WELLS (5)	1	Yes	Well	Ground water	Emergency	Inactive
WALKER WELL PUMP	17	No	Pump Facility	-	-	Active
BIRCHWOOD HILLS BOOSTER PUMP STATION	19	No	Pump Facility	-	-	Active
CATACUNEMAUG ROAD GRAVEL PACKED WEL PUMP	4	No	Pump Facility	-	-	Active
GP WELL PATTERSON RD. PUMP	5	No	Pump Facility	-	-	Active
CENTER ROAD BOOSTER PUMP STATION	6	No	Pump Facility	-	-	Active
LANCASTER ROAD BOOSTER PUMP STATION	7	No	Pump Facility	-	-	Active
0.192 MG MAJORS HILL TANK #1	10	No	Storage	-	-	Active
RICHARD L. HATCH TANK	12	No	Storage	-	-	Active
HEYLIGER TANK	14	No	Storage	-	-	Active
0.45 MG MAJORS HILL TANK #2	9	No	Storage	-	-	Active
CENTER ROAD STORAGE TANK	8	No	Storage	-	-	Inactive
CATECUNEMAUG RD WELL TREATMENT PLANT	11	No	Treatment Plant	-	-	Active
PATTERSON RD GPW TREATMENT PLANT	13	No	Treatment Plant	-	-	Active
WALKER WELL TREATMENT PLANT	18	No	Treatment Plant	-	-	Active

1 - 19 of 19

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CATECUNEMAUG RD WELL TREATMENT PLANT	11	4-Log Treatment of Viruses	Disinfection
CATECUNEMAUG RD WELL TREATMENT PLANT	11	pH Adjustment	Corrosion control
CATECUNEMAUG RD WELL TREATMENT PLANT	11	Hypochlorination, Pre	Disinfection
PATTERSON RD GPW TREATMENT PLANT	13	pH Adjustment	Corrosion control
PATTERSON RD GPW TREATMENT PLANT	13	Hypochlorination, Pre	Disinfection
WALKER WELL TREATMENT PLANT	18	pH Adjustment	Corrosion control
WALKER WELL TREATMENT PLANT	18	Hypochlorination, Pre	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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