Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NY2902857
PWS Name	WEST HEMPSTEAD WD
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	32031
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
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	18511	Returned to Compliance	01-OCT-2023	31-MAR-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	18508	Returned to Compliance	01-OCT-2013	31-DEC-2013	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	18509	Returned to Compliance	01-OCT-2013	31-DEC-2013	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	17103	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	17003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	16803	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	16703	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	17403	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	16303	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	16103	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	16003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	15903	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	15803	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	15703	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	15503	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	15403	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	15303	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	15203	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	15103	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	15003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	14903	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	14803	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	14703	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	14603	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	14303	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	14203	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	17203	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	18403	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	16903	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	14103	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	14003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	7903	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	5003	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	8203	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	8103	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	8003	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	7803	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	7703	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	8403	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	7303	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	7103	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	7003	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	6903	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	6803	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	6703	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	6503	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	6403	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	6303	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	6203	Returned to Compliance	01-APR-2002	30-JUN-2002	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	6103	Returned to Compliance	01-APR-2002	30-JUN-2002	No

1 - 50 of 118

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1012	18511	SOX	State Compliance achieved	18-JUN-2025	State	-
1010	18508	SOX	State Compliance achieved	26-MAY-2015	State	-
1010	18509	SOX	State Compliance achieved	26-MAY-2015	State	-
603	5003	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5103	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5203	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5303	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5603	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5703	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5803	SOX	State Compliance achieved	09-JUL-2003	State	-
603	5903	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6003	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6103	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6203	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6303	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6403	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6503	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6703	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6803	SOX	State Compliance achieved	09-JUL-2003	State	-
603	6903	SOX	State Compliance achieved	09-JUL-2003	State	-
603	7003	SOX	State Compliance achieved	09-JUL-2003	State	-
603	7103	SOX	State Compliance achieved	09-JUL-2003	State	-
603	7303	SOX	State Compliance achieved	09-JUL-2003	State	-
603	7703	SOX	State Compliance achieved	09-JUL-2003	State	-
603	7803	SOX	State Compliance achieved	09-JUL-2003	State	-
603	7903	SOX	State Compliance achieved	09-JUL-2003	State	-
603	8003	SOX	State Compliance achieved	09-JUL-2003	State	-
603	8103	SOX	State Compliance achieved	09-JUL-2003	State	-
603	8203	SOX	State Compliance achieved	09-JUL-2003	State	-
603	8403	SOX	State Compliance achieved	09-JUL-2003	State	-
603	9403	SOX	State Compliance achieved	09-JUL-2003	State	-
603	9503	SOX	State Compliance achieved	09-JUL-2003	State	-
603	9603	SOX	State Compliance achieved	09-JUL-2003	State	-
603	9703	SOX	State Compliance achieved	09-JUL-2003	State	-
603	9803	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10103	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10203	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10303	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10403	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10503	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10603	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10703	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10803	SOX	State Compliance achieved	09-JUL-2003	State	-
603	10903	SOX	State Compliance achieved	09-JUL-2003	State	-
603	11003	SOX	State Compliance achieved	09-JUL-2003	State	-
603	11203	SOX	State Compliance achieved	09-JUL-2003	State	-
603	11303	SOX	State Compliance achieved	09-JUL-2003	State	-
603	11403	SOX	State Compliance achieved	09-JUL-2003	State	-
603	11503	SOX	State Compliance achieved	09-JUL-2003	State	-
603	11603	SOX	State Compliance achieved	09-JUL-2003	State	-

1 - 50 of 117

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 2 OOS	17679	Yes	Well	Ground water	Emergency	Active
WELL 11	88458	Yes	Well	Ground water	Permanent	Active
WELL 7-2	73076	Yes	Well	Ground water	Permanent	Active
WELL 10	59805	Yes	Well	Ground water	Permanent	Active
WELL 3 - OOS	17678	Yes	Well	Ground water	Permanent	Active
WELL 4 - OOS	17677	Yes	Well	Ground water	Permanent	Active
WELL 6	17676	Yes	Well	Ground water	Permanent	Active
WELL 5 - OOS	17675	Yes	Well	Ground water	Permanent	Active
WELL 7-1	17674	Yes	Well	Ground water	Permanent	Active
WELL 8	17673	Yes	Well	Ground water	Permanent	Active
WELL 9	17672	Yes	Well	Ground water	Permanent	Active
WELL 1 OOS	34366	Yes	Well	Ground water	Emergency	Inactive
WELL 2 OOS	34365	Yes	Well	Ground water	Emergency	Inactive
WELL 1 OOS	17680	Yes	Well	Ground water	Emergency	Active
DISTRIBUTION SYSTEM	59395	No	Distribution System/Zone	-	-	Active
BIRCH STREET ELEVATED TANK	135	No	Storage	-	-	Active
BIRCH STREET GROUND TANK	27	No	Storage	-	-	Active
7TH STREET ELEVATED TANK	28	No	Storage	-	-	Active
WELL 10 : CL2, CAUSTIC	59807	No	Treatment Plant	-	-	Active
WELL 7-2:CL2 & CAUSTIC	73080	No	Treatment Plant	-	-	Active
WELL 6:CL2, CAUSTIC	73600	No	Treatment Plant	-	-	Active
WELL 9:CL2, CAUSTIC	7994	No	Treatment Plant	-	-	Active
WELL 7-1: CL2, CAUSTIC	8193	No	Treatment Plant	-	-	Active
WELL 8 : CL2, CAUSTIC	8194	No	Treatment Plant	-	-	Active
WELL 11 CL2 & CAUSTIC	88459	No	Treatment Plant	-	-	Active
WELLS 9, 10 & 11: AIRSTRIPPER	88799	No	Treatment Plant	-	-	Active
WELLS 9, 10 & 11:IRON FILTRATION	88800	No	Treatment Plant	-	-	Active
WELLS 6 & 8: IRON FILTRATION	88801	No	Treatment Plant	-	-	Active
PLANT 7 AOP GAC EFF	89437	No	Treatment Plant	-	-	Active
WELLS 3, 4 & 5:AIRSTRIPPER	73596	No	Treatment Plant	-	-	Inactive
WELLS 3, 4 & 5:CL2 & CAUSTIC	73597	No	Treatment Plant	-	-	Inactive
WELLS 9/10 AIRSTRIPPER	77070	No	Treatment Plant	-	-	Inactive
WELLS 9/10 IRON FILTER	77071	No	Treatment Plant	-	-	Inactive
WELLS 3, 4 & 5:AIRSTRIPPER	7901	No	Treatment Plant	-	-	Inactive
WELLS 6, 8, 9, 10, 11 A/S & IRON REMOVAL	79878	No	Treatment Plant	-	-	Inactive
WELLS 3,4&5: IRON FILTRATION PLANT	9452	No	Treatment Plant	-	-	Inactive

1 - 36 of 36

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 10 : CL2, CAUSTIC	59807	pH Adjustment	Corrosion control
WELL 10 : CL2, CAUSTIC	59807	Hypochlorination, Pre	Disinfection
WELL 7-2:CL2 & CAUSTIC	73080	Hypochlorination, Post	Disinfection
WELL 7-2:CL2 & CAUSTIC	73080	pH Adjustment	Corrosion control
WELLS 3, 4 & 5:CL2 & CAUSTIC	73597	Hypochlorination, Post	Disinfection
WELLS 3, 4 & 5:CL2 & CAUSTIC	73597	pH Adjustment	Corrosion control
WELL 6:CL2, CAUSTIC	73600	Hypochlorination, Pre	Disinfection
WELL 6:CL2, CAUSTIC	73600	pH Adjustment	Corrosion control
WELLS 9/10 AIRSTRIPPER	77070	Aeration, Packed Tower	Organics removal
WELLS 9/10 IRON FILTER	77071	Filtration, Pressure Sand	Iron removal
WELLS 3, 4 & 5:AIRSTRIPPER	7901	Aeration, Packed Tower	Organics removal
WELLS 6, 8, 9, 10, 11 A/S & IRON REMOVAL	79878	Filtration, Pressure Sand	Iron removal
WELLS 6, 8, 9, 10, 11 A/S & IRON REMOVAL	79878	Aeration, Packed Tower	Organics removal
WELL 9:CL2, CAUSTIC	7994	Hypochlorination, Pre	Disinfection
WELL 9:CL2, CAUSTIC	7994	pH Adjustment	Corrosion control
WELL 7-1: CL2, CAUSTIC	8193	Hypochlorination, Pre	Disinfection
WELL 7-1: CL2, CAUSTIC	8193	pH Adjustment	Corrosion control
WELL 8 : CL2, CAUSTIC	8194	pH Adjustment	Corrosion control
WELL 8 : CL2, CAUSTIC	8194	Hypochlorination, Pre	Disinfection
WELL 11 CL2 & CAUSTIC	88459	Hypochlorination, Post	Disinfection
WELL 11 CL2 & CAUSTIC	88459	pH Adjustment, Post	Corrosion control
WELLS 3,4&5: IRON FILTRATION PLANT	9452	Coagulation	Inorganics removal
WELLS 3,4&5: IRON FILTRATION PLANT	9452	Filtration, Rapid Sand	Iron removal

1 - 23 of 23

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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