GREAT VALLEY TOWN W.D. #4 (HIGHLAND AVE.

GREAT VALLEY, NY · ~105 people served

Check your exact address → GREAT VALLEY overview

100

Excellent

PurityRadar safety score

PWSID

NY0430052

State

New York

City

GREAT VALLEY

Population served

105

Primary source

GWP

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2023. Official EPA record →

Monitoring · Lead & Copper Rule began Oct 2020 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2014 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2014 Resolved

Other began Jan 2009 Resolved

Recent enforcement actions

State action · SIF May 2023
State action · SFJ Sep 2022
State action · SIE Sep 2022
State action · SOX Jan 2021
State action · SOX Aug 2015
State action · SIF Apr 2015
State action · SFJ Dec 2014
State action · SIE Feb 2014

This profile is built from EPA public records for system NY0430052 — 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.