City Water Quality Rankings in Massachusetts
283 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#121
New Bedford
County, MA
80 B
#122 Pembroke
County, MA
80 B
#123 Pepperell
County, MA
80 B
#124 Princeton
County, MA
80 B
#125 Saugus
County, MA
80 B
#126 Uxbridge
County, MA
80 B
#127 Marshfield
County, MA
79 B
#128 Boylston
County, MA
78 B
#129 East Brookfield
County, MA
78 B
#130 Lunenburg
County, MA
78 B
#131 Middleborough
County, MA
78 B
#132 Norwood
County, MA
78 B
#133 Sunderland
County, MA
78 B
#134 Swampscott
County, MA
78 B
#135 Swansea
County, MA
78 B
#136 Westminster
County, MA
78 B
#137 Wilbraham
County, MA
78 B
#138 Williamstown
County, MA
78 B
#139 Groton
County, MA
77 B
#140 Malden
County, MA
77 B
#141 Somerville
County, MA
77 B
#142 Sudbury
County, MA
77 B
#143 Ayer
County, MA
76 B
#144 Canton
County, MA
76 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.