Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NY2902827
PWS Name	HEMPSTEAD (V)
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	56000
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
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	6219	Returned to Compliance	17-OCT-2024	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	6216	Returned to Compliance	01-JAN-2016	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	6212	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	6158	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	6208	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	6154	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	6207	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	6153	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	6206	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	6152	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	6151	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	6205	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	6203	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	6149	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	6147	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	6201	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	6200	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	6146	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	6145	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	6199	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	6198	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	6144	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	6197	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	6143	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	6196	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	6142	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	6195	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	6141	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	6193	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	6139	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	6138	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	6192	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	6137	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	6191	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	6190	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	6136	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	6186	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	6132	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	6173	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	6172	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	6119	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	6118	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MCL	Maximum Contaminant Level Violation, Average	Volatile Organic Chemicals	Trichloroethylene	6107	Returned to Compliance	01-MAY-2007	31-MAY-2007	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	1003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	5003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	2403	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	2803	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	2903	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	3003	Returned to Compliance	01-OCT-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	3103	Returned to Compliance	01-OCT-2002	31-DEC-2002	No

1 - 50 of 63

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1224	6219	SOX	State Compliance achieved	03-JAN-2025	State	-
1215	6216	SOX	State Compliance achieved	28-MAY-2019	State	-
1210	6144	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6212	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6208	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6207	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6206	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6205	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6203	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6201	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6200	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6199	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6198	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6197	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6196	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6195	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6193	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6192	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6191	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6190	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6186	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6173	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6172	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6118	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6119	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6132	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6136	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6137	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6138	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6139	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6141	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6142	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6143	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6145	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6146	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6147	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6149	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6151	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6152	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6153	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6154	SOX	State Compliance achieved	09-APR-2014	State	-
1210	6158	SOX	State Compliance achieved	09-APR-2014	State	-
1207	6107	SOX	State Compliance achieved	07-JUN-2007	State	-
303	2403	SOX	State Compliance achieved	09-JUL-2003	State	-
303	5003	SOX	State Compliance achieved	09-JUL-2003	State	-
303	4603	SOX	State Compliance achieved	09-JUL-2003	State	-
303	4503	SOX	State Compliance achieved	09-JUL-2003	State	-
303	4403	SOX	State Compliance achieved	09-JUL-2003	State	-
303	4303	SOX	State Compliance achieved	09-JUL-2003	State	-
303	4103	SOX	State Compliance achieved	09-JUL-2003	State	-

1 - 50 of 63

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 1R-ABANDONED	17402	Yes	Well	Ground water	Emergency	Inactive
WELL 6 - ABANDONED	34084	Yes	Well	Ground water	Permanent	Inactive
WELL 1R-ABANDONED	34081	Yes	Well	Ground water	Permanent	Inactive
WELL 2 - ABANDONED	34079	Yes	Well	Ground water	Permanent	Inactive
WELL 2R	1994	Yes	Well	Ground water	Permanent	Inactive
WELL 6 - ABANDONED	17405	Yes	Well	Ground water	Permanent	Inactive
WELL 3 ABANDONED	17403	Yes	Well	Ground water	Permanent	Inactive
WELL 2 - ABANDONED	17400	Yes	Well	Ground water	Permanent	Inactive
WELL 6R	71191	Yes	Well	Ground water	Permanent	Active
WELL 3R	71189	Yes	Well	Ground water	Permanent	Active
WELL 1RR	71188	Yes	Well	Ground water	Permanent	Active
WELL 2R	69043	Yes	Well	Ground water	Permanent	Active
WELL 5	17408	Yes	Well	Ground water	Permanent	Active
WELL 9	17407	Yes	Well	Ground water	Permanent	Active
WELL 8	17406	Yes	Well	Ground water	Permanent	Active
WELL 4	17404	Yes	Well	Ground water	Permanent	Active
WELL 7	17401	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	46613	No	Distribution System/Zone	-	-	Active
LAUREL AV ELEVATED TANK	20	No	Storage	-	-	Active
CLINTON ST ELEVATED TANK	56	No	Storage	-	-	Active
TREATMENT BASIN	56473	No	Storage	-	-	Active
TREATMENT BASIN-CLINTON ST	1269	No	Treatment Plant	-	-	Active
WELLS 7 & 9 IRON FILTER PLANT	71322	No	Treatment Plant	-	-	Active
WELL 7:CL2,CAUSTIC & PHOSPHATE	8147	No	Treatment Plant	-	-	Active
WELL 9:CL2,CAUSTIC & PHOSPHATE	8148	No	Treatment Plant	-	-	Active
WELLS 1RR, 4, & 5 EAST AIRSTRIPPER	83459	No	Treatment Plant	-	-	Active
WELLS 6R & 8 NORTH AIRSTRIPPER	83460	No	Treatment Plant	-	-	Active
WELLS 7&9 AIRSTRIPPER	88355	No	Treatment Plant	-	-	Active
AIR STRIPPER - WELL 1R-OOS	12529	No	Treatment Plant	-	-	Inactive
AIR STRIPPER - WELL 1R-OOS	1272	No	Treatment Plant	-	-	Inactive
WELL 7 :CL2, CAUSTIC & FE SEQ	22560	No	Treatment Plant	-	-	Inactive
WELLS 1RR & 6R AIRSTRIPPER - OOS	4895	No	Treatment Plant	-	-	Inactive
WELLS 1RR & 6R AIRSTRIPPER - OOS	71192	No	Treatment Plant	-	-	Inactive
WELLS 5 & 8: AIRSTRIPPER-OOS	74156	No	Treatment Plant	-	-	Inactive
WELLS 4, 5 & 8 EAST AIRSTRIPPER-OOS	79206	No	Treatment Plant	-	-	Inactive
WELL 1RR & 8 AIRSTRIPPER NORTH-OOS	79456	No	Treatment Plant	-	-	Inactive
WELLS 4 & 5 EAST AIRSTRIPPER-OOS	79457	No	Treatment Plant	-	-	Inactive

1 - 37 of 37

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
AIR STRIPPER - WELL 1R-OOS	12529	Aeration, Packed Tower	Organics removal
TREATMENT BASIN-CLINTON ST	1269	Aeration, Spray	Taste / odor control
TREATMENT BASIN-CLINTON ST	1269	Sequestration	Iron removal
TREATMENT BASIN-CLINTON ST	1269	Gaseous Chlorination, Post	Disinfection
TREATMENT BASIN-CLINTON ST	1269	pH Adjustment	Corrosion control
WELL 7 :CL2, CAUSTIC & FE SEQ	22560	Sequestration	Iron removal
WELLS 1RR & 6R AIRSTRIPPER - OOS	4895	Hypochlorination, Pre	Disinfection
WELLS 1RR & 6R AIRSTRIPPER - OOS	4895	Sequestration	Iron removal
WELLS 1RR & 6R AIRSTRIPPER - OOS	4895	pH Adjustment	Corrosion control
WELLS 1RR & 6R AIRSTRIPPER - OOS	4895	Aeration, Packed Tower	Organics removal
WELLS 7 & 9 IRON FILTER PLANT	71322	Filtration, Pressure Sand	Iron removal
WELLS 7 & 9 IRON FILTER PLANT	71322	Hypochlorination, Post	Disinfection
WELLS 7 & 9 IRON FILTER PLANT	71322	pH Adjustment, Post	Corrosion control
WELLS 5 & 8: AIRSTRIPPER-OOS	74156	Aeration, Packed Tower	Organics removal
WELL 1RR & 8 AIRSTRIPPER NORTH-OOS	79456	Aeration, Packed Tower	Organics removal
WELLS 4 & 5 EAST AIRSTRIPPER-OOS	79457	Aeration, Packed Tower	Organics removal
WELL 7:CL2,CAUSTIC & PHOSPHATE	8147	Hypochlorination, Post	Disinfection
WELL 7:CL2,CAUSTIC & PHOSPHATE	8147	pH Adjustment	Corrosion control
WELL 7:CL2,CAUSTIC & PHOSPHATE	8147	Sequestration	Iron removal
WELL 9:CL2,CAUSTIC & PHOSPHATE	8148	Hypochlorination, Post	Disinfection
WELL 9:CL2,CAUSTIC & PHOSPHATE	8148	pH Adjustment	Corrosion control
WELL 9:CL2,CAUSTIC & PHOSPHATE	8148	Sequestration	Iron removal
WELLS 1RR, 4, & 5 EAST AIRSTRIPPER	83459	Aeration, Packed Tower	Organics removal
WELLS 6R & 8 NORTH AIRSTRIPPER	83460	Aeration, Packed Tower	Organics removal

1 - 24 of 24

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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