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Water system · PWSID NY5903437

MOUNT KISCO WATER DEPARTMENT

MOUNT KISCO, NY · ~11,187 people served

Check your exact address → MOUNT KISCO overview
100
Excellent
PurityRadar safety score

PWSID

NY5903437

State

New York

City

MOUNT KISCO

Population served

11,187

Primary source

Surface water

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 Dec 2024). Levels in parts per trillion (ppt).

Lithium

13,600 ppt

limit —

No federal limit

PFPeA

3.1 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

5

Health-based

45

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2025. Official EPA record →

Treatment technique · EPA contaminant 0700 health-based began Nov 2024 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2015 Resolved
Monitoring & reporting · Total coliform began Aug 2015 Resolved
Monitoring & reporting · EPA contaminant 0200 began Apr 2014 Resolved
Other · EPA contaminant 7000 began Jan 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2002 Resolved
Monitoring & reporting · Total coliform began Apr 1995 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jul 1993 Resolved
Monitoring & reporting · Nitrate began Jan 1993 Resolved

Recent enforcement actions

  • State action · SOX Jun 2025
  • State action · SIF Jun 2025
  • State action · SIE Dec 2024
  • State action · SFJ Dec 2024
  • State action · SOX Aug 2023
  • State action · SOX Jun 2016
  • State action · SOX May 2016
  • State action · SIF Apr 2016

This profile is built from EPA public records for system NY5903437 — 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.