City Water Quality Rankings in Massachusetts
283 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#169
Ashburnham
County, MA
73 C
#170 Lincoln
County, MA
73 C
#171 Middleton
County, MA
73 C
#172 Milford
County, MA
73 C
#173 Onset
County, MA
73 C
#174 East Bridgewater
County, MA
72 C
#175 Hadley
County, MA
72 C
#176 Holbrook
County, MA
72 C
#177 Melrose
County, MA
72 C
#178 Provincetown
County, MA
72 C
#179 Wilmington
County, MA
72 C
#180 Hamilton
County, MA
71 C
#181 Rowley
County, MA
71 C
#182 Stockbridge
County, MA
71 C
#183 Townsend
County, MA
71 C
#184 Hanson
County, MA
70 C
#185 Northborough
County, MA
70 C
#186 Rockport
County, MA
70 C
#187 Somerset
County, MA
70 C
#188 Bellingham
County, MA
69 C
#189 Dartmouth
County, MA
69 C
#190 Holliston
County, MA
69 C
#191 Three Rivers
County, MA
69 C
#192 Tisbury
County, MA
69 C
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.