WILLISTON PARK (V)

WILLISTON PARK, NY · ~7,287 people served

Check your exact address → WILLISTON PARK overview

Good

PurityRadar safety score

PWSID

NY2902858

State

New York

City

WILLISTON PARK

Population served

7,287

Primary source

Groundwater

Score history

▼ 22 points — the score moved from 100 to 78 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 78

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 Aug 2023). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

5.6 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFNA

Perfluorononanoic acid

7.7 ppt

limit 10 ppt

Near EPA limit

PFPeA

4.3 ppt

limit —

No federal limit

PFHxA

3.6 ppt

limit —

No federal limit

PFHpA

3 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2015. Official EPA record →

Monitoring & reporting · Nitrate began Oct 2013 Resolved

Treatment technique · Mercury health-based began Jan 2007 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 2001 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1996 Resolved

Recent enforcement actions

State action · SOX May 2015
State action · SIF May 2015
State action · SIE Jun 2014
State action · SFJ Jun 2014
State action · SIF Oct 2009
State action · SOX Oct 2009
State action · SIE Sep 2009
State action · SFJ Sep 2009

This profile is built from EPA public records for system NY2902858 — 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.