Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NY5103276
PWS Name	DIX HILLS WATER DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	34522
County Served	Suffolk

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	457	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	424	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	414	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	422	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	427	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	426	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	417	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	425	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	413	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	421	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	420	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	419	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	418	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	416	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	415	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	423	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	412	Returned to Compliance	01-DEC-2011	31-DEC-2011	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	411	Returned to Compliance	01-JAN-2010	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	307	Returned to Compliance	01-AUG-2007	31-AUG-2007	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	409	Returned to Compliance	01-JAN-2007	31-DEC-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	101	Returned to Compliance	01-SEP-2001	30-SEP-2001	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
1157	457	SOX	State Compliance achieved	31-MAY-2025	State	-
1123	418	SOX	State Compliance achieved	03-JUN-2013	State	-
1124	427	SOX	State Compliance achieved	03-JUN-2013	State	-
1124	426	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	425	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	424	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	423	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	414	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	415	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	416	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	417	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	419	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	420	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	421	SOX	State Compliance achieved	03-JUN-2013	State	-
1123	422	SOX	State Compliance achieved	03-JUN-2013	State	-
1125	413	SOX	State Compliance achieved	31-MAR-2013	State	-
1116	412	SOX	State Compliance achieved	01-JAN-2012	State	-
1113	411	SOX	State Compliance achieved	23-JUN-2010	State	-
1110	409	SOX	State Compliance achieved	31-MAR-2009	State	supplier collected 4th quarter 2008 samples and 1st quarter 2009 samples from wells 1-2, 6-3, 7-1, 9-2, 10-1 and 11-1 to satisfy the violation
908	307	SOX	State Compliance achieved	24-OCT-2007	State	water system had waiver rescinded and is chlorinating
302	101	SOX	State Compliance achieved	05-JUN-2002	State	Old External System Number: 88503

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL #1-1	23725	Yes	Well	Ground water	Emergency	Inactive
WELL # 11-2	78901	Yes	Well	Ground water	Permanent	Active
WELL # 11-1	78900	Yes	Well	Ground water	Permanent	Active
WELL #6-1	23737	Yes	Well	Ground water	Permanent	Active
WELL #1-3	23736	Yes	Well	Ground water	Permanent	Active
WELL #1-2	23735	Yes	Well	Ground water	Permanent	Active
WELL #3-1	23734	Yes	Well	Ground water	Permanent	Active
WELL #3-2	23733	Yes	Well	Ground water	Permanent	Active
WELL #3-3	23732	Yes	Well	Ground water	Permanent	Active
WELL #4-1	23731	Yes	Well	Ground water	Permanent	Active
WELL #5-1	23730	Yes	Well	Ground water	Permanent	Active
WELL #6-3	23729	Yes	Well	Ground water	Permanent	Active
WELL #7-1	23728	Yes	Well	Ground water	Permanent	Active
WELL #8-1	23727	Yes	Well	Ground water	Permanent	Active
WELL #9-1	23726	Yes	Well	Ground water	Permanent	Active
WELL #9-2	23724	Yes	Well	Ground water	Permanent	Active
WELL #10-1	23723	Yes	Well	Ground water	Permanent	Active
WELL #6-2	23722	Yes	Well	Ground water	Permanent	Active
WELL 1-1(S-203),DIA 10",261' AUXIL	40768	Yes	Well	Ground water	Emergency	Inactive
DISTRIBUTION SYSTEM	62953	No	Distribution System/Zone	-	-	Active
DISTRIBUTION SYSTEM	62211	No	Other	-	-	Active
TREATMENT PLANT FOR WELLS #1-2 AND 1-3	2337	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELLS #3-1, 3-2, 3-3	51764	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL #4	51766	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL #5-1	51769	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELLS #6-1, 6-2, 6-3	51773	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL #7-1	51777	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL #8-1	51778	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELLS #9-1, 9-2	51780	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELL #10-1	51783	No	Treatment Plant	-	-	Active
TREATMENT PLANT FOR WELLS #11-1, 11-2	80951	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT FOR WELLS #1-2 AND 1-3	2337	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELLS #1-2 AND 1-3	2337	Activated Carbon, Granular	Organics removal
TREATMENT PLANT FOR WELLS #1-2 AND 1-3	2337	pH Adjustment	Corrosion control
TREATMENT PLANT FOR WELLS #3-1, 3-2, 3-3	51764	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELLS #3-1, 3-2, 3-3	51764	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELL #4	51766	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL #4	51766	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELL #5-1	51769	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL #5-1	51769	Activated Carbon, Granular	Organics removal
TREATMENT PLANT FOR WELL #5-1	51769	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELLS #6-1, 6-2, 6-3	51773	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELLS #6-1, 6-2, 6-3	51773	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELL #7-1	51777	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL #7-1	51777	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELL #8-1	51778	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELL #8-1	51778	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL #8-1	51778	Activated Carbon, Granular	Organics removal
TREATMENT PLANT FOR WELLS #9-1, 9-2	51780	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELLS #9-1, 9-2	51780	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL #10-1	51783	Sequestration	Iron removal
TREATMENT PLANT FOR WELL #10-1	51783	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELL #10-1	51783	pH Adjustment, Post	Corrosion control
TREATMENT PLANT FOR WELLS #11-1, 11-2	80951	Hypochlorination, Post	Disinfection
TREATMENT PLANT FOR WELLS #11-1, 11-2	80951	pH Adjustment, Post	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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