Is Windsor Locks, CT tap water safe?
The short answer
Neither of the 2 utilities serving Windsor Locks has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.
Ctwc - Northern Reg - Western System, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 8.0 ppt, above EPA’s new limit, which takes effect in 2029.
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 Windsor Locks’s ZIP codes, from EPA’s estimates.
- Open report
Ctwc - Northern Reg - Western System
Connecticut · serves 101,313 people · about 12,600 in Windsor Locks
2 results above EPA’s new limit, which takes effect in 2029, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 8.0 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Metropolitan District Commission
Connecticut · serves 390,887 people · lists Windsor Locks among the places it serves
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 Ctwc - Northern Reg - Western System’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOA, PFOS, Arsenic
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: PFOA, PFOS, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: PFOA, PFOS, Arsenic
Water testing near Windsor Locks
The 3 labs Connecticut certifies closest to Windsor Locks, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Envirotech Laboratory
Windsor, CT · about 4 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics, radioactivity
Vallid Laboratories, Inc.
Agawam, MA · about 9 miles
Certified for bacteria
Pace Analytical Services, LLC - East Longmeadow
East Longmeadow, MA · about 12 miles
Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals, PFAS
ZIP codes in Windsor Locks
Which ZIP codes are in Windsor Locks: 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 Windsor Locks
Other towns in Hartford County with a page of their own.
What to do next
- Read Ctwc - Northern Reg - Western System’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOARanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water