Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	RI1858430
PWS Name	BLOCK ISLAND WATER COMPANY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	9999
County Served	Washington

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	Hexachlorocyclopentadiene	1136273	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	1136279	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	1136278	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1136277	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1136276	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	1136275	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1136274	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1136272	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	1136271	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	1136270	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	1136269	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	1136268	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1136267	Returned to Compliance	01-OCT-2020	31-DEC-2020	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1136266	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	1136250	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1136249	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1136248	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	1136247	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1136246	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	1136245	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	1136244	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	1136243	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	1136242	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	1136241	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	1136240	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	1136239	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1136238	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	1136237	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	1136236	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	1136235	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	1136234	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	1136233	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	1136232	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	1136231	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	1136230	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	1136263	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	1136262	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	1136229	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	1136228	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	1136227	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	1136226	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	1136225	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	1136224	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	1136223	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	1136222	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	1136221	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	1136220	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	1136219	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	1136218	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	1136217	Returned to Compliance	01-OCT-2017	31-DEC-2017	No

1 - 50 of 76

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
8080946	1136278	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136277	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136276	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136275	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136274	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136273	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136272	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136279	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136271	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136270	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136269	SIF	State Public Notification received	01-JUL-2024	State	-
8080946	1136268	SIF	State Public Notification received	01-JUL-2024	State	-
8080937	1136267	SIA	State Violation/Reminder Notice	03-FEB-2021	State	-
8080935	1136266	SIF	State Public Notification received	25-JUN-2019	State	-
8080929	1136224	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136225	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136226	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136227	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136228	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136229	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136223	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136222	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136221	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136220	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136219	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136218	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136217	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136216	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136215	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136214	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136213	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136212	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136211	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136210	SIF	State Public Notification received	14-JUN-2018	State	-
8080929	1136209	SIF	State Public Notification received	14-JUN-2018	State	-
8080925	1136230	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136231	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136232	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136233	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136234	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136235	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136236	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136237	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136238	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136239	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136240	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136241	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136242	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136243	SOX	State Compliance achieved	19-JAN-2018	State	-
8080925	1136244	SOX	State Compliance achieved	19-JAN-2018	State	-

1 - 50 of 76

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
SANDS POND	1256	Yes	Intake	Surface water	Emergency	Active
WELL #5	492	Yes	Well	Ground water	Permanent	Inactive
WELL #6A (GP)	7792	Yes	Well	Ground water	Permanent	Active
WELL 5A (GP)	5000	Yes	Well	Ground water	Permanent	Active
WELLS 1,2,3 COMPOSITE (GP)	493	Yes	Well	Ground water	Permanent	Active
WELL #4A (GP)	4786	Yes	Well	Ground water	Permanent	Active
WELL #6 (GP)	491	Yes	Well	Ground water	Other	Inactive
FRESH POND	1257	Yes	Intake	Surface water	Emergency	Active
DISTRIBUTION SYSTEM	1388	No	Distribution System/Zone	-	-	Active
PUMP FACILITY	4261	No	Pump Facility	-	-	Active
HISTORICAL	2718	No	Sampling Station	-	-	Active
HISTORICAL	2719	No	Sampling Station	-	-	Active
HISTORICAL	2720	No	Sampling Station	-	-	Active
HISTORICAL	2721	No	Sampling Station	-	-	Active
SAMPLING STATION	2940	No	Sampling Station	-	-	Active
STORAGE TANK 1	2103	No	Storage	-	-	Active
STORAGE TANK 2	5473	No	Storage	-	-	Active
STORAGE TANK 3	8498	No	Storage	-	-	Active
TREATMENT PLANT	87	No	Treatment Plant	-	-	Active

1 - 19 of 19

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	87	Filtered	Particulate removal
TREATMENT PLANT	87	4-Log Treatment of Viruses	Disinfection
TREATMENT PLANT	87	Hypochlorination, Post	Disinfection
TREATMENT PLANT	87	Reverse Osmosis	Iron removal
TREATMENT PLANT	87	Reverse Osmosis	Radionuclides removal
TREATMENT PLANT	87	Innovative	Iron removal
TREATMENT PLANT	87	pH Adjustment, Post	Corrosion control

1 - 7 of 7

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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