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Water system · PWSID NY2902830

WA OF WESTERN NASSAU

NEW HYDE PARK, NY · ~120,000 people served

Check your exact address → NEW HYDE PARK overview

Fair

PurityRadar safety score

PWSID

NY2902830

State

New York

City

NEW HYDE PARK

Population served

120,000

Primary source

Groundwater

Score history

▼ 54 points — the score moved from 100 to 46 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 46

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Jan 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

10 ppt

limit 4 ppt

Above EPA limit · 2.5×

PFOS

Perfluorooctanesulfonic acid

6.1 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

4.1 ppt

limit 10 ppt

Below EPA limit

PFBA

5 ppt

limit —

No federal limit

PFPeA

4.2 ppt

limit —

No federal limit

PFHxA

4 ppt

limit —

No federal limit

PFBS

3.4 ppt

limit —

No federal limit

PFHpA

3.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2019. Official EPA record →

Monitoring & reporting · Uranium began Oct 2018 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2011 Resolved

Monitoring & reporting · Total coliform began Jun 2009 Resolved

Monitoring & reporting · Nitrite began Oct 2004 Resolved

Monitoring & reporting · Nitrate began Jul 2004 Resolved

Monitoring & reporting · Nitrate began Apr 2004 Resolved

Recent enforcement actions

State action · SIF May 2019
State action · SOX May 2019
State action · SIE Mar 2019
State action · SFJ Mar 2019
State action · SOX Jul 2011
State action · SIF Jul 2011
State action · SFJ Jul 2011
State action · SIE Jul 2011

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Arsenic

1 station · latest Aug 2022

0.11 · max 0.11 ug/l · 1

Copper

1 station · latest Aug 2022

6.1 · max 6.1 ug/l · 1

Lead

1 station · latest Aug 2022

0.072 · max 0.072 ug/l · 1

Manganese

1 station · latest Aug 2022

97.2 · max 97.2 ug/l · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system NY2902830 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.