Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NY2902840
PWS Name	LIBERTY UTILITIES NEW YORK - MERRICK
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	135000
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	4172	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	4171	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	4170	Returned to Compliance	01-JUL-2023	31-DEC-2023	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	4138	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	4137	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	4136	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	4135	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	4141	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	4131	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	4129	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	4128	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	4127	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	4126	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4125	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	4123	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	4122	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	4121	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	4120	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	4119	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	4118	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	4117	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	4116	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	4115	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	4114	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	4111	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	4110	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	4109	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	4139	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	4145	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	4144	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	4108	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4107	Known	01-MAR-2011	31-MAR-2011	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	3306	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	406	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	4106	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	3606	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	3506	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	3406	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	3206	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	3106	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	3806	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	2706	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	2506	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	2406	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	2306	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	2206	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	2106	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	1906	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	1806	Returned to Compliance	01-JUL-2002	30-JUN-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	1706	Returned to Compliance	01-JUL-2002	30-JUN-2005	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
1118	4170	SOX	State Compliance achieved	19-MAY-2025	State	-
1118	4171	SOX	State Compliance achieved	19-MAY-2025	State	-
1118	4172	SOX	State Compliance achieved	19-MAY-2025	State	-
1113	4139	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4138	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4137	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4136	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4135	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4131	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4129	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4128	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4127	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4126	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4125	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4123	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4122	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4121	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4120	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4119	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4118	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4117	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4116	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4115	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4114	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4111	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4110	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4109	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4141	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4108	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4145	SOX	State Compliance achieved	09-MAR-2016	State	-
1113	4144	SOX	State Compliance achieved	09-MAR-2016	State	-
1109	4107	SIE	State Public Notification requested	03-MAY-2011	State	-
1107	3806	SOX	State Compliance achieved	03-APR-2007	State	-
1107	3606	SOX	State Compliance achieved	03-APR-2007	State	-
1107	3506	SOX	State Compliance achieved	03-APR-2007	State	-
1107	3406	SOX	State Compliance achieved	03-APR-2007	State	-
1107	3306	SOX	State Compliance achieved	03-APR-2007	State	-
1107	3206	SOX	State Compliance achieved	03-APR-2007	State	-
1107	3106	SOX	State Compliance achieved	03-APR-2007	State	-
1107	2706	SOX	State Compliance achieved	03-APR-2007	State	-
1107	2506	SOX	State Compliance achieved	03-APR-2007	State	-
1107	2406	SOX	State Compliance achieved	03-APR-2007	State	-
1107	2306	SOX	State Compliance achieved	03-APR-2007	State	-
1107	2206	SOX	State Compliance achieved	03-APR-2007	State	-
1107	2106	SOX	State Compliance achieved	03-APR-2007	State	-
1107	1906	SOX	State Compliance achieved	03-APR-2007	State	-
1107	1806	SOX	State Compliance achieved	03-APR-2007	State	-
1107	1706	SOX	State Compliance achieved	03-APR-2007	State	-
1107	1606	SOX	State Compliance achieved	03-APR-2007	State	-
1107	1506	SOX	State Compliance achieved	03-APR-2007	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
NEWBRIDGE 1 WELL - OOS HIGH IRON	17570	Yes	Well	Ground water	Emergency	Active
SEAMANNECK 3 WELL	17583	Yes	Well	Ground water	Permanent	Inactive
SEAMANS NECK WELL 3A	86765	Yes	Well	Ground water	Permanent	Active
DEMOTT 5A WELL	83466	Yes	Well	Ground water	Permanent	Active
JEFFERSON 11 WELL	17586	Yes	Well	Ground water	Permanent	Active
SEAMANNECK 4 WELL	17585	Yes	Well	Ground water	Permanent	Active
JERUSALEM 5 WELL	17582	Yes	Well	Ground water	Permanent	Active
JERUSALEM 4 WELL	17581	Yes	Well	Ground water	Permanent	Active
CHARLES 2 WELL	17580	Yes	Well	Ground water	Permanent	Active
JEFFERSON 12 WELL	17579	Yes	Well	Ground water	Permanent	Active
DEMOTT 6 WELL	17578	Yes	Well	Ground water	Permanent	Active
DEMOTT 4 WELL	17577	Yes	Well	Ground water	Permanent	Active
NEWBRIDGE 3 WELL	17575	Yes	Well	Ground water	Permanent	Active
OLD MILL 1	17574	Yes	Well	Ground water	Permanent	Active
MASSAPEQUA 6 WELL	17573	Yes	Well	Ground water	Permanent	Active
MASSAPEQUA 7 WELL	17572	Yes	Well	Ground water	Permanent	Active
MASSAPEQUA 8 WELL	17571	Yes	Well	Ground water	Permanent	Active
NEWBRIDGE 4 WELL	17569	Yes	Well	Ground water	Permanent	Active
WELL 2S OOS FOAMING AGENTS	34266	Yes	Well	Ground water	Emergency	Inactive
WELL 2S OOS FOAMING AGENTS	17584	Yes	Well	Ground water	Emergency	Inactive
WELL 5D: ABANDONED	17576	Yes	Well	Ground water	Emergency	Inactive
DISTRIBUTION SYSTEM	46748	No	Distribution System/Zone	-	-	Active
NEWBRIDGE RD GROUND TANK	14	No	Storage	-	-	Active
BERNARD ST GROUND TANK	49	No	Storage	-	-	Active
JEFFERSON ST ELEVATED TANK	50	No	Storage	-	-	Active
DEMOTT AVE GROUND TANK 1	51	No	Storage	-	-	Active
MORTON ST GROUND TANK	52	No	Storage	-	-	Active
DEMOTT AVE GROUND TANK 2	87430	No	Storage	-	-	Active
WELLS 4J&5J:CL2, CAUSTIC & CALCIQUEST	73471	No	Treatment Plant	-	-	Active
WELL 4N: IRON FILTRATION PLANT	74226	No	Treatment Plant	-	-	Active
WELL 3S & 4S: IRON FILTRATION PLANT	74227	No	Treatment Plant	-	-	Active
WELL 3N,4N:CL2, CAUSTIC & CALCIQUEST	8214	No	Treatment Plant	-	-	Active
WELL 4S :CL2, CAUSTIC & CALCIQUEST	8215	No	Treatment Plant	-	-	Active
WELL 2S:CL2, CAUSTIC & CALCIQUEST	8216	No	Treatment Plant	-	-	Active
WELL 3S:CL2, CAUSTIC & CALCIQUEST	8217	No	Treatment Plant	-	-	Active
WELL 4J&5J IRON FILTRATION PLANT	8218	No	Treatment Plant	-	-	Active
WELL 2C:CL2, CAUSTIC & CALCIQUEST	8219	No	Treatment Plant	-	-	Active
WELL 6D:CL2, CAUSTIC & CALCIQUEST	8230	No	Treatment Plant	-	-	Active
WELL 11J:CL2, CAUSTIC & CALCIQUEST	8232	No	Treatment Plant	-	-	Active
WELL 4D:CL2, CAUSTIC & CALCIQUEST	8243	No	Treatment Plant	-	-	Active
WELL 5D:CL2, CAUSTIC & CALCIQUEST	8244	No	Treatment Plant	-	-	Active
WELL 6M:CL2, CAUSTIC & CALCIQUEST	8245	No	Treatment Plant	-	-	Active
WELL 7M:CL2, CAUSTIC & CALCIQUEST	8246	No	Treatment Plant	-	-	Active
WELL 8M:CL2, CAUSTIC & CALCIQUEST	8247	No	Treatment Plant	-	-	Active
OLD MILL 1:CL2, CAUSTIC & CALCIQUEST	8248	No	Treatment Plant	-	-	Active
WELL 12J:CL2, CAUSTIC & CALCIQUEST	8251	No	Treatment Plant	-	-	Active
DEMOTT 5A WELL:CL2, CAUSTIC & CALCIQUEST	83477	No	Treatment Plant	-	-	Active
WELLS 3S & 4S GAC PLANT	83855	No	Treatment Plant	-	-	Active
WELL CHARLES 2: IRON FILTRATION PLANT	91700	No	Treatment Plant	-	-	Active
WELL 3S & 4S AOPGAC PLANT	92054	No	Treatment Plant	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELLS 4J&5J:CL2, CAUSTIC & CALCIQUEST	73471	Hypochlorination, Post	Disinfection
WELLS 4J&5J:CL2, CAUSTIC & CALCIQUEST	73471	pH Adjustment	Corrosion control
WELL 4N: IRON FILTRATION PLANT	74226	Filtration, Greensand	Iron removal
WELL 3S & 4S: IRON FILTRATION PLANT	74227	Filtration, Greensand	Iron removal
SEAMANNECK 3S GAC	81505	Activated Carbon, Granular	Organics removal
WELL 3N,4N:CL2, CAUSTIC & CALCIQUEST	8214	Sequestration	Iron removal
WELL 3N,4N:CL2, CAUSTIC & CALCIQUEST	8214	pH Adjustment	Corrosion control
WELL 3N,4N:CL2, CAUSTIC & CALCIQUEST	8214	Hypochlorination, Pre	Disinfection
WELL 4S :CL2, CAUSTIC & CALCIQUEST	8215	Sequestration	Iron removal
WELL 4S :CL2, CAUSTIC & CALCIQUEST	8215	pH Adjustment	Corrosion control
WELL 4S :CL2, CAUSTIC & CALCIQUEST	8215	Hypochlorination, Pre	Disinfection
WELL 2S:CL2, CAUSTIC & CALCIQUEST	8216	pH Adjustment	Corrosion control
WELL 2S:CL2, CAUSTIC & CALCIQUEST	8216	Sequestration	Iron removal
WELL 2S:CL2, CAUSTIC & CALCIQUEST	8216	Hypochlorination, Pre	Disinfection
WELL 3S:CL2, CAUSTIC & CALCIQUEST	8217	Sequestration	Iron removal
WELL 3S:CL2, CAUSTIC & CALCIQUEST	8217	pH Adjustment	Corrosion control
WELL 3S:CL2, CAUSTIC & CALCIQUEST	8217	Hypochlorination, Pre	Disinfection
WELL 4J&5J IRON FILTRATION PLANT	8218	Sequestration	Iron removal
WELL 4J&5J IRON FILTRATION PLANT	8218	Filtration, Pressure Sand	Iron removal
WELL 4J&5J IRON FILTRATION PLANT	8218	pH Adjustment	Corrosion control
WELL 4J&5J IRON FILTRATION PLANT	8218	Hypochlorination, Pre	Disinfection
WELL 2C:CL2, CAUSTIC & CALCIQUEST	8219	Sequestration	Iron removal
WELL 2C:CL2, CAUSTIC & CALCIQUEST	8219	pH Adjustment	Corrosion control
WELL 2C:CL2, CAUSTIC & CALCIQUEST	8219	Hypochlorination, Pre	Disinfection
WELL 6D:CL2, CAUSTIC & CALCIQUEST	8230	Sequestration	Iron removal
WELL 6D:CL2, CAUSTIC & CALCIQUEST	8230	pH Adjustment	Corrosion control
WELL 6D:CL2, CAUSTIC & CALCIQUEST	8230	Hypochlorination, Pre	Disinfection
WELL 11J:CL2, CAUSTIC & CALCIQUEST	8232	Sequestration	Iron removal
WELL 11J:CL2, CAUSTIC & CALCIQUEST	8232	pH Adjustment	Corrosion control
WELL 11J:CL2, CAUSTIC & CALCIQUEST	8232	Hypochlorination, Pre	Disinfection
WELL 4D:CL2, CAUSTIC & CALCIQUEST	8243	Sequestration	Iron removal
WELL 4D:CL2, CAUSTIC & CALCIQUEST	8243	pH Adjustment	Corrosion control
WELL 4D:CL2, CAUSTIC & CALCIQUEST	8243	Hypochlorination, Pre	Disinfection
WELL 5D:CL2, CAUSTIC & CALCIQUEST	8244	Sequestration	Iron removal
WELL 5D:CL2, CAUSTIC & CALCIQUEST	8244	pH Adjustment	Corrosion control
WELL 5D:CL2, CAUSTIC & CALCIQUEST	8244	Hypochlorination, Pre	Disinfection
WELL 6M:CL2, CAUSTIC & CALCIQUEST	8245	Sequestration	Iron removal
WELL 6M:CL2, CAUSTIC & CALCIQUEST	8245	pH Adjustment	Corrosion control
WELL 6M:CL2, CAUSTIC & CALCIQUEST	8245	Hypochlorination, Pre	Disinfection
WELL 7M:CL2, CAUSTIC & CALCIQUEST	8246	Sequestration	Iron removal
WELL 7M:CL2, CAUSTIC & CALCIQUEST	8246	pH Adjustment	Corrosion control
WELL 7M:CL2, CAUSTIC & CALCIQUEST	8246	Hypochlorination, Pre	Disinfection
WELL 8M:CL2, CAUSTIC & CALCIQUEST	8247	Sequestration	Iron removal
WELL 8M:CL2, CAUSTIC & CALCIQUEST	8247	pH Adjustment	Corrosion control
WELL 8M:CL2, CAUSTIC & CALCIQUEST	8247	Hypochlorination, Pre	Disinfection
OLD MILL 1:CL2, CAUSTIC & CALCIQUEST	8248	Sequestration	Iron removal
OLD MILL 1:CL2, CAUSTIC & CALCIQUEST	8248	pH Adjustment	Corrosion control
OLD MILL 1:CL2, CAUSTIC & CALCIQUEST	8248	Hypochlorination, Pre	Disinfection
WELL 12J:CL2, CAUSTIC & CALCIQUEST	8251	Sequestration	Iron removal
WELL 12J:CL2, CAUSTIC & CALCIQUEST	8251	pH Adjustment	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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