Is Watertown, CT tap water safe?
The short answer
None of the 4 utilities serving Watertown has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.
Watertown Fire District, which serves the most people here, has 1 result above the health goal. The worst: Lead at 2.2 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
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 Fire District
Connecticut · serves 6,718 people · about 530 in Watertown
1 result above the health goal. The worst: Lead at 2.2 ppb, above the health goal.
No health-based violations since 2016
- Open report
Watertown Water & Sewer Authority
Connecticut · serves 9,972 people · about 360 in Watertown
1 result above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Watertown Water & Sewer - Westgate
Connecticut · serves 600 people · under 100 in Watertown
1 result above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Waterbury Water Department
Connecticut · serves 107,271 people · lists Watertown among the places it serves
1 result above the health goal. The worst: Arsenic at 1.0 ppb, above the 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 Fire District’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Watertown
The 3 labs Connecticut certifies closest to Watertown, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Northwest Environmental Water Labs
Waterbury, CT · about 9 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics
EMSL Analytical, Inc. - CT
Meriden, CT · about 17 miles
Certified for bacteria, asbestos
ALS Environmental - Newtown
Newtown, CT · about 19 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics, organic chemicals, radioactivity
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: Connecticut DPH, approved commercial laboratories certified to test drinking water; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Watertown
Other towns in Litchfield County with a page of their own.
What to do next
- Read Watertown Fire District’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water