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Community Water System · PWS NY2902857

West Hempstead WD

West Hempstead, New York 11552 - drinking water served from groundwater sources to 32,031 people, tracked in EPA SDWIS and UCMR5.

32,031
People served
327
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 327 drinking-water violations at West Hempstead WD - above the New York per-system average.

327
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
32,031
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: West Hempstead WD

West Hempstead WD is a local-owned community water system that delivers drinking water to 32,031 residents in West Hempstead, New York (Nassau County) through 7,973 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 327 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 322 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Picloram, recorded in 13 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across New York, EPA tracks 8,098 public water systems serving 19,294,951 people, with 552,003 cumulative violations and 26,817 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 68.2 violations. Statewide, 129 of 332 UCMR5-tested systems have reported PFAS detections (38.9%).

West Hempstead WD's 327 violations sit above the New York average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
32,031
Total Violations
327
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
7,973
County
Nassau
School/Daycare
No
MCL Violations
0
Monitoring Violations
322
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Picloram MR 13 2023
ETHYLENE DIBROMIDE MR 13 2002
Dalapon MR 11 2002
Di(2-ethylhexyl) adipate MR 11 2002
Di(2-ethylhexyl) phthalate MR 11 2002
Dinoseb MR 11 2002
Aldicarb sulfoxide MR 11 2002
Aldicarb sulfone MR 11 2002
Aldicarb MR 11 2002
Atrazine MR 11 2002
LASSO MR 11 2002
HEXACHLOROBENZENE MR 11 2002
Pentachlorophenol MR 11 2002
Simazine MR 11 2002
Chlordane MR 11 2002
OXAMYL MR 11 2002
Endrin MR 11 2002
Methoxychlor MR 11 2002
2,4,5-TP MR 11 2002
Heptachlor epoxide MR 11 2002
Benzo(a)pyrene MR 11 2002
Total Polychlorinated Biphenyls (PCB) MR 11 2002
Carbofuran MR 11 2002
2,4-D MR 11 2002
BHC-GAMMA MR 11 2002
Toxaphene MR 11 2002
Hexachlorocyclopentadiene MR 11 2002
Heptachlor MR 11 2002
TTHM MR 4 2013
Total Haloacetic Acids (HAA5) MR 4 2013

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeS 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFBA 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 4/25/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 4/25/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 4/25/2024 <8.00 ppt 8.00 ppt Not Detected
PFHpS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 4/25/2024 <20.00 ppt 20.00 ppt Not Detected
PFMBA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFEESA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFDoA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 4/25/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/25/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFOA 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFMBA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 4/25/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeS 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 4/25/2024 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 4/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 4/25/2024 <7.00 ppt 7.00 ppt Not Detected
PFMPA 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 4/25/2024 <6.00 ppt 6.00 ppt Not Detected
PFUnA 4/25/2024 <2.00 ppt 2.00 ppt Not Detected
PFBS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFDoA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/25/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 4/25/2024 <5.00 ppt 5.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for West Hempstead WD.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NY2902857 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New York Drinking Water Authority

New York State Department of Health, Public Water Systems is the primacy agency that licenses and inspects West Hempstead WD under EPA-delegated authority.

Open NY regulator portal

Source: New York State Department of Health, Public Water Systems

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Picloram MR 13 SDWIS / NY2902857 / 2040
2013 TTHM MR 4 SDWIS / NY2902857 / 2950
2013 Total Haloacetic Acids (HAA5) MR 4 SDWIS / NY2902857 / 2456
2002 ETHYLENE DIBROMIDE MR 13 SDWIS / NY2902857 / 2946
2002 Dalapon MR 11 SDWIS / NY2902857 / 2031
2002 Di(2-ethylhexyl) adipate MR 11 SDWIS / NY2902857 / 2035
2002 Di(2-ethylhexyl) phthalate MR 11 SDWIS / NY2902857 / 2039
2002 Dinoseb MR 11 SDWIS / NY2902857 / 2041
2002 Aldicarb sulfoxide MR 11 SDWIS / NY2902857 / 2043
2002 Aldicarb sulfone MR 11 SDWIS / NY2902857 / 2044
2002 Aldicarb MR 11 SDWIS / NY2902857 / 2047
2002 Atrazine MR 11 SDWIS / NY2902857 / 2050
2002 LASSO MR 11 SDWIS / NY2902857 / 2051
2002 HEXACHLOROBENZENE MR 11 SDWIS / NY2902857 / 2274
2002 Pentachlorophenol MR 11 SDWIS / NY2902857 / 2326

How West Hempstead WD Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric West Hempstead WD New York avg Federal benchmark
Total violations 327 68.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 3.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 32,031 2,383 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 8,098 regulated public water systems in New York.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is West Hempstead WD water safe to drink?
West Hempstead WD (PWS ID: NY2902857) has 327 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 32,031 people using Groundwater sources.
How many people does West Hempstead WD serve?
West Hempstead WD serves 32,031 people in West Hempstead, New York. It is a Local-owned system using Groundwater water sources with 7,973 service connections.
What type of violations does West Hempstead WD have?
West Hempstead WD has 327 total violations: 0 health-based violations (MCL exceedances or treatment failures), 322 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in West Hempstead WD water?
No. West Hempstead WD was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does West Hempstead WD use?
West Hempstead WD uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.