Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	MA4075000
PWS Name	DENNIS WATER DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	65000
County Served	Barnstable

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
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	49	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	35	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	36	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	39	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	32	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	34	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	43	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	31	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	37	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	44	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	52	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	33	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	41	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	40	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	38	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	45	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	42	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	50	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	51	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	46	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	54	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	56	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	47	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	55	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	48	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	53	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	30	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	29	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	28	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	57	Known	01-JAN-2014	31-DEC-2016	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	26	Known	01-OCT-2008	31-DEC-2008	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	27	Known	01-OCT-2008	31-DEC-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	2	Returned to Compliance	01-DEC-2006	31-DEC-2006	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1	Returned to Compliance	01-NOV-2005	30-NOV-2005	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	04V0001	Known	01-NOV-2003	30-NOV-2003	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	01V0001	Known	01-JUN-2000	30-JUN-2000	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	01V0002	Known	01-JUN-2000	30-JUN-2000	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrite	97V0001	Known	01-JAN-1996	31-MAR-1996	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	97V0002	Known	01-JAN-1996	31-MAR-1996	No

1 - 39 of 39

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
19	57	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	52	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	51	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	53	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	56	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	55	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	54	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	28	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	29	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	30	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	31	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	32	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	33	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	34	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	35	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	36	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	37	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	38	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	39	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	40	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	41	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	42	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	43	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	44	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	45	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	46	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	47	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	48	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	49	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
19	50	SIE	State Public Notification requested	19-SEP-2017	State	ENFORCEMENT FORBEARANCE- SAMPLE NOT LISTED ON SCHEDULE
17	27	SFL	State Administrative/Compliance Order without penalty issued	28-JAN-2009	State	JUST NOTICE - REDUCED SAMPLING AFTER VIOLATION
17	26	SFL	State Administrative/Compliance Order without penalty issued	28-JAN-2009	State	JUST NOTICE - REDUCED SAMPLING AFTER VIOLATION
15	2	SOX	State Compliance achieved	16-MAY-2007	State	TCR: MONMCL DEC'06
13	1	SOX	State Compliance achieved	18-MAY-2006	State	TCR
11	04V0001	SFL	State Administrative/Compliance Order without penalty issued	01-DEC-2003	State	SYSTEM CHLORINATED, TANKS TAKEN OFF LINE AND CLEANED.
10	01V0002	SFL	State Administrative/Compliance Order without penalty issued	08-JAN-2001	State	MCL VIOLATION FOR TOTAL COLIFORM AND E-COLI, SYSTEM CHLORINATED
10	01V0001	SFL	State Administrative/Compliance Order without penalty issued	08-JAN-2001	State	MCL VIOLATION FOR TOTAL COLIFORM AND E-COLI, SYSTEM CHLORINATED
9	97V0002	SFL	State Administrative/Compliance Order without penalty issued	04-DEC-1996	State	P.NOTICE AND SAMPLING REQ.
9	97V0001	SFL	State Administrative/Compliance Order without penalty issued	04-DEC-1996	State	P.NOTICE AND SAMPLING REQ.

1 - 39 of 39

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
GP WELL 13	14	Yes	Well	Ground water	Emergency	Inactive
GP WELL 8	9	Yes	Well	Ground water	Permanent	Active
GP WELL 23	89	Yes	Well	Ground water	Permanent	Active
GP WELL 22	86	Yes	Well	Ground water	Permanent	Active
GP WELL 21	82	Yes	Well	Ground water	Permanent	Active
GP WELL 7	8	Yes	Well	Ground water	Permanent	Active
GP WELL 6	7	Yes	Well	Ground water	Permanent	Active
GP WELL 5	6	Yes	Well	Ground water	Permanent	Active
GP WELL 20	58	Yes	Well	Ground water	Permanent	Active
GP WELL 4	5	Yes	Well	Ground water	Permanent	Active
GP WELL 3	4	Yes	Well	Ground water	Permanent	Active
GP WELL 2	3	Yes	Well	Ground water	Permanent	Active
GP WELL 1	2	Yes	Well	Ground water	Permanent	Active
GP WELL 19	19	Yes	Well	Ground water	Permanent	Active
GP WELL 18	18	Yes	Well	Ground water	Permanent	Active
GP WELL 16	17	Yes	Well	Ground water	Permanent	Active
GP WELL 15	16	Yes	Well	Ground water	Permanent	Active
GP WELL 14	15	Yes	Well	Ground water	Permanent	Active
GP WELL 12	13	Yes	Well	Ground water	Permanent	Active
GP WELL 11	12	Yes	Well	Ground water	Permanent	Active
GP WELL 10	11	Yes	Well	Ground water	Permanent	Active
GP WELL 9	10	Yes	Well	Ground water	Permanent	Active
MAIN STATION WELLS	1	Yes	Well	Ground water	Permanent	Active
RTE 134 BOOSTER STATION	40	No	Pump Facility	-	-	Active
PUMP STATION 11	41	No	Pump Facility	-	-	Active
PUMP STATION 4	42	No	Pump Facility	-	-	Active
PUMP STATION 6	43	No	Pump Facility	-	-	Active
PUMP STATION 9	44	No	Pump Facility	-	-	Active
PUMP STATION 14	45	No	Pump Facility	-	-	Active
PUMP STATION 15	46	No	Pump Facility	-	-	Active
PUMP STATION 7	47	No	Pump Facility	-	-	Active
PUMP STATION 10	48	No	Pump Facility	-	-	Active
PUMP STATION 12	49	No	Pump Facility	-	-	Active
PUMP STATION 5	51	No	Pump Facility	-	-	Active
PUMP STATION 16	52	No	Pump Facility	-	-	Active
PUMP STATION 1	53	No	Pump Facility	-	-	Active
PUMP STATION 2	54	No	Pump Facility	-	-	Active
PUMP STATION 3	55	No	Pump Facility	-	-	Active
PUMP STATION 8	56	No	Pump Facility	-	-	Active
MAIN STATION	57	No	Pump Facility	-	-	Active
PUMP STATION 20	59	No	Pump Facility	-	-	Active
PUMP STATION 18	80	No	Pump Facility	-	-	Active
PUMP STATION 19	81	No	Pump Facility	-	-	Active
PUMP STATION 21	83	No	Pump Facility	-	-	Active
PUMP STATION 22	87	No	Pump Facility	-	-	Active
PUMP STATION 23	92	No	Pump Facility	-	-	Active
PUMP STATION 13	50	No	Pump Facility	-	-	Inactive
OLD BASS RIVER TANK	20	No	Storage	-	-	Active
RTE. 134	21	No	Storage	-	-	Active
HOKUM ROCK ROAD STORAGE TANK	60	No	Storage	-	-	Active

1 - 50 of 72

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MAIN STATION CORROSION FACILITY	61	pH Adjustment	Corrosion control
MAIN STATION CORROSION FACILITY	61	Hypochlorination, Post	Disinfection
CORROSION FACILITY 1/2/3	62	pH Adjustment	Corrosion control
CORROSION FACILITY 1/2/3	62	Hypochlorination, Post	Disinfection
CORROSION FACILITY 4/6/22	65	pH Adjustment	Corrosion control
CORROSION FACILITY 4/6/22	65	Hypochlorination, Post	Disinfection
CORROSION FACILITY 5	66	pH Adjustment	Corrosion control
CORROSION FACILITY 5	66	Hypochlorination, Post	Disinfection
CORROSION FACILITY 7/8/10	67	pH Adjustment	Corrosion control
CORROSION FACILITY 7/8/10	67	Hypochlorination, Post	Disinfection
CORROSION FACILITY 9	68	pH Adjustment	Corrosion control
CORROSION FACILITY 9	68	Hypochlorination, Post	Disinfection
CORROSION FACILITY 11	69	pH Adjustment	Corrosion control
CORROSION FACILITY 11	69	Hypochlorination, Post	Disinfection
CORROSION CONTROL FACILITY 12/23	70	Hypochlorination, Post	Disinfection
CORROSION CONTROL FACILITY 12/23	70	pH Adjustment, Post	Corrosion control
CORROSION FACILITY 14	71	pH Adjustment	Corrosion control
CORROSION FACILITY 14	71	Hypochlorination, Post	Disinfection
CORROSION FACILITY 15	72	pH Adjustment	Corrosion control
CORROSION FACILITY 15	72	Hypochlorination, Post	Disinfection
CORROSION FACILITY 16	73	pH Adjustment	Corrosion control
CORROSION FACILITY 16	73	Hypochlorination, Post	Disinfection
CORROSION FACILITY 18	74	pH Adjustment	Corrosion control
CORROSION FACILITY 18	74	Hypochlorination, Post	Disinfection
CORROSION FACILITY 19/20	75	pH Adjustment	Corrosion control
CORROSION FACILITY 19/20	75	Hypochlorination, Post	Disinfection
PS 21/CORROSION CONTROL	84	pH Adjustment	Corrosion control
PS 21/CORROSION CONTROL	84	Hypochlorination, Post	Disinfection
NORTH TREATMENT PLANT	90	Hypochlorination, Pre	Disinfection
NORTH TREATMENT PLANT	90	Hypochlorination, Post	Disinfection
NORTH TREATMENT PLANT	90	pH Adjustment	Corrosion control
NORTH TREATMENT PLANT	90	pH Adjustment, Post	Corrosion control
NORTH TREATMENT PLANT	90	Filtration, Greensand	Iron removal
SOUTH TREATMENT PLANT	91	Filtration, Greensand	Iron removal
SOUTH TREATMENT PLANT	91	Hypochlorination, Pre	Disinfection
SOUTH TREATMENT PLANT	91	Hypochlorination, Post	Disinfection
SOUTH TREATMENT PLANT	91	pH Adjustment	Corrosion control
SOUTH TREATMENT PLANT	91	pH Adjustment, Post	Corrosion control
SOUTH TREATMENT PLANT	91	Filtration, Greensand	Iron removal

1 - 39 of 39

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.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions