💧 ZIP Water Report

Watertown City

PWSID NY2202346 · Watertown, New York · serves 27,861 people · surface water source

F
Failing

PFAS test results (EPA UCMR 5)

ContaminantResultFederal limit (MCL)Sampled
PFOA 7.3 ppt 4 ppt 5/6/2025
PFHxS 3.9 ppt 10 ppt 5/6/2025

ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.

Violation history

DateViolationTypeHealth-basedStatus
2025-12-01 Interim Enhanced Surface Water Treatment Rule TT Yes Resolved
2022-01-01 TTHM MCL Yes Archived

ZIP codes served