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Water system · PWSID NY2202346

WATERTOWN CITY

WATERTOWN, NY · ~27,861 people served

Check your exact address → WATERTOWN overview
71
Good
PurityRadar safety score

PWSID

NY2202346

State

New York

City

WATERTOWN

Population served

27,861

Primary source

Surface water

Score history

▼ 29 points — the score moved from 100 to 71 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 71

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

PFOA

Perfluorooctanoic acid

7.3 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFHxS

Perfluorohexanesulfonic acid

3.9 ppt

limit 10 ppt

Below EPA limit

Violations & enforcement

10

Violations on record

0

Unaddressed

8

Health-based

35

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2021. Official EPA record →

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2020 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2017 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2011 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Apr 2011 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2011 Resolved
Monitoring & reporting · EPA contaminant 0300 began Sep 2003 Resolved
Monitoring & reporting · EPA contaminant 0300 began Apr 2003 Resolved

Recent enforcement actions

  • EPA/federal action · EFL Mar 2021
  • State action · SOX Jan 2021
  • State action · SIF Nov 2020
  • State action · SIE Oct 2020
  • State action · SFJ Oct 2020
  • State action · SIE Oct 2020
  • State action · SFJ Oct 2020
  • State action · SIF Aug 2020

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Atrazine

1 station · latest Aug 2021

4.9 · max 4.9 ng/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system NY2202346 — 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.