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Water system · PWSID NY4519111

HALFMOON WATER DISTRICT (TROY)

HALFMOON, NY · ~15,000 people served

Check your exact address → HALFMOON overview
100
Excellent
PurityRadar safety score

PWSID

NY4519111

State

New York

City

HALFMOON

Population served

15,000

Primary source

SWP

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

10

Violations on record

0

Unaddressed

3

Health-based

34

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2017. Official EPA record →

Monitoring & reporting · Total coliform began Jan 2016 Resolved
Monitoring & reporting · Total coliform began Sep 2007 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2006 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2006 Resolved
Monitoring & reporting · EPA contaminant 2383 began Feb 2006 Resolved
Monitoring & reporting · EPA contaminant 2383 began Feb 2006 Resolved
Other began Mar 1993 Resolved
Other began Feb 1993 Resolved
Other began Jan 1993 Resolved

Recent enforcement actions

  • State action · SIE Sep 2017
  • State action · SOX Sep 2017
  • State action · SFJ Sep 2017
  • State action · SIF Sep 2017
  • State action · SOX May 2017
  • State action · SFJ Apr 2016
  • State action · SIE Apr 2016
  • State action · SOX Apr 2016

This profile is built from EPA public records for system NY4519111 — 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.