Is Watertown, NY tap water safe?
The short answer
3 of the 6 utilities serving Watertown have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and New York’s records: Watertown City, Brownville Village and Pamelia Town WD #2.
Watertown City, which serves the most people here, has 2 results above the legal limit, 1 result above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 78.2 ppb, above the legal limit.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Watertown’s ZIP codes, from EPA’s estimates.
- Open report
Watertown City
New York · serves 27,861 people · about 1,600 in Watertown
2 results above the legal limit, 1 result above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 78.2 ppb, above the legal limit.
13 health-based violations since 2016
- Open report
Brownville Village
New York · serves 1,200 people · under 100 in Watertown
1 result above the action level and 1 result above the health goal. The worst: Copper at 2.0 ppm, above the action level.
No health-based violations since 2016
- Open report
Black River Village
New York · serves 1,600 people · under 100 in Watertown
1 result above the health goal. The worst: Lead at 3.8 ppb, above the health goal.
No health-based violations since 2016
- Open report
Northland Estates
New York · serves 540 people · under 100 in Watertown
1 result above the health goal. The worst: Lead at 2.4 ppb, above the health goal.
No health-based violations since 2016
- Open report
Pamelia Town WD #2
New York · serves 150 people · under 100 in Watertown
2 results above the legal limit and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 80.2 ppb, above the legal limit.
13 health-based violations since 2016
- Open report
Leray Town WD 3
New York · serves 480 people · based in Watertown
Nothing in its records is above a health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Watertown City’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), PFOA, Lead
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), PFOA, Lead
PUR PLUS Faucet Filtration System, Horizontal (PFM400H)
Faucet mount
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: Total trihalomethanes (TTHM), PFOA, Lead
Water testing near Watertown
The 3 labs New York certifies closest to Watertown, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Converse Laboratories Inc.
Watertown, NY · under a mile
Certified for bacteria
Oswego Water Treatment Plant Lab
Oswego, NY · about 46 miles
Certified for bacteria
Certified Environmental Services Inc.
North Syracuse, NY · about 59 miles
Certified for bacteria, nitrate, minerals and other inorganics
ZIP codes in Watertown
Which ZIP codes are in Watertown: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: NYS Environmental Laboratory Approval Program (ELAP), drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Watertown
Other towns in Jefferson County with a page of their own.
What to do next
- Read Watertown City’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water