Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NY2902835
PWS Name	LIBERTY UTILITIES NEW YORK - LYNBROOK
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	220000
County Served	Nassau

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
TT	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Lead and Copper Rule	5430	Returned to Compliance	01-JUL-2024	31-DEC-2024	Yes
TT	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Lead and Copper Rule	5429	Returned to Compliance	01-JAN-2024	30-JUN-2024	Yes
TT	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Lead and Copper Rule	5428	Returned to Compliance	01-JUL-2023	31-DEC-2023	Yes

1 - 3 of 3

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
13	5428	SOX	State Compliance achieved	19-MAY-2025	State	-
6	5430	SOX	State Compliance achieved	19-MAY-2025	State	-
6	5429	SOX	State Compliance achieved	19-MAY-2025	State	-

1 - 3 of 3

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 14-1-ABANDONED	17527	Yes	Well	Ground water	Emergency	Inactive
WELL 6-1	17506	Yes	Well	Ground water	Seasonal	Active
WELL 9-1A OOS	34198	Yes	Well	Ground water	Permanent	Inactive
WELL 1-17 ABANDONED	34196	Yes	Well	Ground water	Permanent	Inactive
WELL 1-13 OOS HIGH IRON	34193	Yes	Well	Ground water	Permanent	Inactive
WELL 3-2 OOS	34190	Yes	Well	Ground water	Permanent	Inactive
WELL 8-1 OOS	34187	Yes	Well	Ground water	Permanent	Inactive
WELL 7-2 OOS	34184	Yes	Well	Ground water	Permanent	Inactive
WELL 15-2: ABANDONED	17532	Yes	Well	Ground water	Permanent	Inactive
WELL 24-2-ABANDONED	17519	Yes	Well	Ground water	Permanent	Inactive
WELL 1-17 ABANDONED	17516	Yes	Well	Ground water	Permanent	Inactive
WELL 9-2A-ABANDONED	17515	Yes	Well	Ground water	Permanent	Inactive
WELL 1-13 ABANDONED	17513	Yes	Well	Ground water	Permanent	Inactive
WELL 2-1-ABANDONED	17512	Yes	Well	Ground water	Permanent	Inactive
WELL 24-2A	88962	Yes	Well	Ground water	Permanent	Active
WELL 15-1A	88428	Yes	Well	Ground water	Permanent	Active
WELL 1-13A	87777	Yes	Well	Ground water	Permanent	Active
WELL 15-2A	82385	Yes	Well	Ground water	Permanent	Active
WELL 9-2B-OOS	82384	Yes	Well	Ground water	Permanent	Active
WELL 2-1A	81504	Yes	Well	Ground water	Permanent	Active
WELL 1-17A	72065	Yes	Well	Ground water	Permanent	Active
WELL 1-18	43908	Yes	Well	Ground water	Permanent	Active
WELL 17-2	17535	Yes	Well	Ground water	Permanent	Active
WELL 17-1	17534	Yes	Well	Ground water	Permanent	Active
WELL 16-1	17533	Yes	Well	Ground water	Permanent	Active
WELL 15-1	17531	Yes	Well	Ground water	Permanent	Active
WELL 18-1	17530	Yes	Well	Ground water	Permanent	Active
WELL 12-2	17529	Yes	Well	Ground water	Permanent	Active
WELL 12-1	17528	Yes	Well	Ground water	Permanent	Active
WELL 18-2	17526	Yes	Well	Ground water	Permanent	Active
WELL 19-1	17525	Yes	Well	Ground water	Permanent	Active
WELL 19-2	17524	Yes	Well	Ground water	Permanent	Active
WELL 20-1	17523	Yes	Well	Ground water	Permanent	Active
WELL 23-1	17522	Yes	Well	Ground water	Permanent	Active
WELL 23-2	17521	Yes	Well	Ground water	Permanent	Active
WELL 24-1	17520	Yes	Well	Ground water	Permanent	Active
WELL 9-1A-OOS	17518	Yes	Well	Ground water	Permanent	Active
WELL 22-1	17517	Yes	Well	Ground water	Permanent	Active
WELL 10-1	17514	Yes	Well	Ground water	Permanent	Active
WELL 3-1	17511	Yes	Well	Ground water	Permanent	Active
WELL 3-2 OOS	17510	Yes	Well	Ground water	Permanent	Active
WELL 4-16	17509	Yes	Well	Ground water	Permanent	Active
WELL 4-17	17508	Yes	Well	Ground water	Permanent	Active
WELL 8-1	17507	Yes	Well	Ground water	Permanent	Active
WELL 7-1A	17505	Yes	Well	Ground water	Permanent	Active
WELL 7-2 OOS	17504	Yes	Well	Ground water	Permanent	Active
WELL 7-3	17503	Yes	Well	Ground water	Permanent	Active
WELL 8-2A	17502	Yes	Well	Ground water	Permanent	Active
WELL 5-R (100CS)	17501	Yes	Well	Ground water	Permanent	Active
WELL 5-N (100CS) CLEARWELL	43931	No	Clear Well	-	-	Active

1 - 50 of 114

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELLS 3-1, 3-2 CL2, LIME & SILICATES	1294	pH Adjustment	Corrosion control
WELLS 3-1, 3-2 CL2, LIME & SILICATES	1294	Hypochlorination, Pre	Disinfection
WELLS 3-1, 3-2 CL2, LIME & SILICATES	1294	Inhibitor, Silicate	Corrosion control
WELLS 23-1, 23-2 CL2, LIME & SILICATES	1315	pH Adjustment	Corrosion control
WELLS 23-1, 23-2 CL2, LIME & SILICATES	1315	Hypochlorination, Pre	Disinfection
WELLS 23-1, 23-2 CL2, LIME & SILICATES	1315	Inhibitor, Silicate	Corrosion control
WELLS 4-16, 4-17 CL2, LIME & SILICATES	1316	pH Adjustment	Corrosion control
WELLS 4-16, 4-17 CL2, LIME & SILICATES	1316	Hypochlorination, Pre	Disinfection
WELLS 4-16, 4-17 CL2, LIME & SILICATES	1316	Inhibitor, Silicate	Corrosion control
WELL 6-1: IRON FILTRATION PLANT	1317	Aeration, Spray	Iron removal
WELL 6-1: IRON FILTRATION PLANT	1317	Hypochlorination, Post	Disinfection
WELL 6-1: IRON FILTRATION PLANT	1317	Filtration, Pressure Sand	Iron removal
WELL 6-1: IRON FILTRATION PLANT	1317	Filtration, Pressure Sand	Iron removal
WELL 6-1: IRON FILTRATION PLANT	1317	pH Adjustment	Corrosion control
WELL 6-1: IRON FILTRATION PLANT	1317	Inhibitor, Silicate	Corrosion control
WELLS 7-1A,7-2&7-3:IRON FILTRATION PLT	1318	Filtration, Rapid Sand	Iron removal
WELLS 7-1A,7-2&7-3:IRON FILTRATION PLT	1318	pH Adjustment	Corrosion control
WELLS 7-1A,7-2&7-3:IRON FILTRATION PLT	1318	Hypochlorination, Post	Disinfection
WELLS 7-1A,7-2&7-3:IRON FILTRATION PLT	1318	Inhibitor, Silicate	Corrosion control
WELLS 8-1, 8-2A CL2, LIME & SILICATES	1319	pH Adjustment	Corrosion control
WELLS 8-1, 8-2A CL2, LIME & SILICATES	1319	Inhibitor, Silicate	Corrosion control
WELLS 8-1, 8-2A CL2, LIME & SILICATES	1319	Hypochlorination, Pre	Disinfection
WELLS 9-1A, 9-2B CL2, LIME & SILICATES	1320	pH Adjustment	Corrosion control
WELLS 9-1A, 9-2B CL2, LIME & SILICATES	1320	Hypochlorination, Pre	Disinfection
WELLS 9-1A, 9-2B CL2, LIME & SILICATES	1320	Inhibitor, Silicate	Corrosion control
WELLS 12-1&12-2: IRON FILTRATION PLT	1321	Filtration, Pressure Sand	Iron removal
WELLS 15-1, 15-2 CL2, LIME & SILICATES	1322	pH Adjustment	Corrosion control
WELLS 15-1, 15-2 CL2, LIME & SILICATES	1322	Hypochlorination, Pre	Disinfection
WELLS 15-1, 15-2 CL2, LIME & SILICATES	1322	Inhibitor, Silicate	Corrosion control
WELLS 17-1, 17-2 CL2, LIME & SILICATES	1323	pH Adjustment	Corrosion control
WELLS 17-1, 17-2 CL2, LIME & SILICATES	1323	Hypochlorination, Pre	Disinfection
WELLS 17-1, 17-2 CL2, LIME & SILICATES	1323	Inhibitor, Silicate	Corrosion control
WELLS 19-1, 19-2 CL2, LIME & SILICATES	1325	pH Adjustment	Corrosion control
WELLS 19-1, 19-2 CL2, LIME & SILICATES	1325	Hypochlorination, Pre	Disinfection
WELLS 19-1, 19-2 CL2, LIME & SILICATES	1325	Inhibitor, Silicate	Corrosion control
WELLS 24-1&24-2: IRON FILTRATION PLT	1327	Filtration, Pressure Sand	Iron removal
WELLS 18-1, 18-2 CL2, LIME & SILICATES	1333	pH Adjustment	Corrosion control
WELLS 18-1, 18-2 CL2, LIME & SILICATES	1333	Hypochlorination, Pre	Disinfection
WELLS 18-1, 18-2 CL2, LIME & SILICATES	1333	Inhibitor, Silicate	Corrosion control
WELL 1-13 CL2, LIME & SILICATES	21775	pH Adjustment	Corrosion control
WELL 1-13 CL2, LIME & SILICATES	21775	Hypochlorination, Pre	Disinfection
WELL 1-13 CL2, LIME & SILICATES	21775	Inhibitor, Silicate	Corrosion control
WELL 1-17 CL2, LIME & SILICATES	21776	pH Adjustment	Corrosion control
WELL 1-17 CL2, LIME & SILICATES	21776	Hypochlorination, Pre	Disinfection
WELL 1-17 CL2, LIME & SILICATES	21776	Inhibitor, Silicate	Corrosion control
WELL 1-18 CL2, LIME & SILICATES	59405	Hypochlorination, Post	Disinfection
WELL 1-18 CL2, LIME & SILICATES	59405	Inhibitor, Silicate	Corrosion control
WELL 1-18 CL2, LIME & SILICATES	59405	pH Adjustment	Corrosion control
WELL 1-17A CL2, LIME & SILICATES	72066	Hypochlorination, Pre	Disinfection
WELL 1-17A CL2, LIME & SILICATES	72066	pH Adjustment	Corrosion control

1 - 50 of 103

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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