WaterQ

City Water Quality Rankings in Connecticut

54 cities ranked by drinking water quality.

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Popular city water quality comparisons

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#49
Danbury
County, CT
40 F
#50
Newtown
County, CT
37 F
#51
Durham
County, CT
11 F
#52
Bethel
County, CT
7 F
#53
Oakdale
County, CT
0 F
#54
Wallingford
County, CT
0 F

Frequently Asked Questions

How are city water quality rankings calculated in Connecticut?

WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.

Can I compare two cities in Connecticut?

Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.

How often does WaterQ refresh city data?

City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.

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