WaterQ

City Water Quality Rankings in Massachusetts

281 cities ranked by drinking water quality.

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Popular city water quality comparisons

Northbridge, MA vs Westport, MA Compare → Eastham, MA vs Sandwich, MA Compare → Seekonk, MA vs Cotuit, MA Compare → Harwich, MA vs Mashpee, MA Compare →

Trending Cities

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#73
Sudbury
County, MA
87 B
#74
Watertown
County, MA
87 B
#75
Belchertown
County, MA
86 B
#76
Devens
County, MA
86 B
#77
Fairhaven
County, MA
86 B
#78
Lancaster
County, MA
86 B
#79
Lynnfield
County, MA
86 B
#80
Nahant
County, MA
86 B
#81
Revere
County, MA
86 B
#82
Salem
County, MA
86 B
#83
Springfield
County, MA
86 B
#84
Weymouth
County, MA
86 B
#85
Halifax
County, MA
85 B
#86
Wellesley
County, MA
85 B
#87
Adams
County, MA
84 B
#88
Amesbury
County, MA
84 B
#89
Arlington
County, MA
84 B
#90
Chatham
County, MA
84 B
#91
Dedham
County, MA
84 B
#92
Douglas
County, MA
84 B
#93
Dracut
County, MA
84 B
#94
Duxbury
County, MA
84 B
#95
Edgartown
County, MA
84 B
#96
Hyannis
County, MA
84 B

Frequently Asked Questions

How are city water quality rankings calculated in Massachusetts?

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 Massachusetts?

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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