Exceeds EPA Limit PFAS EXCEEDS EPA LIMIT

PFAS in Armonk, NY Drinking Water

PFAS data for Armonk, New York · 7,853 residents · 1 ZIP code

Federal water monitoring extends to thousands of public water systems, and in Armonk, New York, that tracking has turned up PFAS — the detection is logged in the EPA compliance record and reflects samples collected under routine Safe Drinking Water Act reporting requirements.

4 ppt (PFOA/PFOS individually)
EPA MCL
15
EPA Violations
High
Health Risk
Reverse Osmosis or Granular Activated Carbon
Best Filter Method

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-04-05

PFAS in Armonk Tap Water

Armonk, New York has 15 EPA violations related to pfas in drinking water.

This analysis covers 7,853 residents across 1 ZIP code in Armonk.

Armonk's overall water quality grade is C (60/100).

Is PFAS in Armonk Water Safe?

PFAS levels in parts of Armonk exceed the EPA MCL of 4 ppt (PFOA/PFOS individually). The EPA requires water systems to take corrective action when this limit is exceeded.

If you live in an affected ZIP code, consider installing a reverse osmosis or granular activated carbon filter certified under NSF 53 / NSF 58 and testing your water independently.

EPA Violations for PFAS in Armonk

Date Violation Type Status ZIP Code
2024-10-01 PFOS (Known) Known 10504
2024-10-01 PFOS (Known) Known 10504
2024-01-01 PFOS (Known) Known 10504
2024-01-01 PFOS (Known) Known 10504
2023-07-01 PFOA (Known) Known 10504
2023-07-01 PFOS (Known) Known 10504
2023-04-01 PFOS (Known) Known 10504
2023-04-01 PFOS (Known) Known 10504
2023-01-01 PFOS (Known) Known 10504
2023-01-01 PFOS (Known) Known 10504
2022-10-01 PFOS (Known) Known 10504
2022-10-01 PFOS (Known) Known 10504
2022-07-01 PFOS (Known) Known 10504
2022-07-01 PFOS (Known) Known 10504
2022-04-01 PFOS (Known) Known 10504

Health Effects of PFAS

  • Increased risk of kidney and testicular cancer
  • Thyroid disease and immune system suppression
  • Reproductive problems and reduced fertility
  • Elevated cholesterol and liver effects
  • Developmental effects in infants and children

Health risk severity: High. Governed by the PFAS National Primary Drinking Water Regulation (2024).

How PFAS Gets Into Drinking Water

  • Firefighting foam (AFFF) used at military bases and airports
  • Industrial manufacturing (non-stick coatings, stain-resistant fabrics)
  • Wastewater treatment plants that receive industrial discharge
  • Landfill leachate from PFAS-containing consumer products

What to Do About PFAS in Armonk Water

  1. Install a reverse osmosis system (most effective — removes 90%+ of PFAS)
  2. Granular activated carbon (GAC) filters remove some PFAS compounds
  3. Look for NSF 53 or NSF 58 certification specifically tested for PFAS
  4. Pitcher filters with activated carbon provide partial reduction

Look for filters certified under NSF 53 / NSF 58 for pfas removal.

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