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Water system · PWSID NY2902844

OYSTER BAY WD

OYSTER BAY, NY · ~8,700 people served

Check your exact address → OYSTER BAY overview
100
Excellent
PurityRadar safety score

PWSID

NY2902844

State

New York

City

OYSTER BAY

Population served

8,700

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

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

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 Jun 2025). Levels in parts per trillion (ppt).

PFBA

5.9 ppt

limit —

No federal limit

PFPeA

4.9 ppt

limit —

No federal limit

PFHxA

4.1 ppt

limit —

No federal limit

Violations & enforcement

3

Violations on record

0

Unaddressed

2

Health-based

12

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2020. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2019 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2003 Resolved

Recent enforcement actions

  • State action · SIF May 2020
  • State action · SOX May 2020
  • State action · SIE Mar 2020
  • State action · SFJ Mar 2020
  • State action · SOX Dec 2007
  • State action · SIF Nov 2007
  • State action · SFJ Nov 2007
  • State action · SIE Nov 2007

This profile is built from EPA public records for system NY2902844 — 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.