City Water Quality Rankings in Massachusetts
283 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#145
Deerfield
County, MA
76 B
#146 Gilbertville
County, MA
76 B
#147 Hingham
County, MA
76 B
#148 Lancaster
County, MA
76 B
#149 Littleton
County, MA
76 B
#150 Medfield
County, MA
76 B
#151 Medway
County, MA
76 B
#152 Merrimac
County, MA
76 B
#153 North Attleborough
County, MA
76 B
#154 Parkwood Beach
County, MA
76 B
#155 Sturbridge
County, MA
76 B
#156 Walpole
County, MA
76 B
#157 Waltham
County, MA
76 B
#158 West Boylston
County, MA
76 B
#159 West Bridgewater
County, MA
76 B
#160 West Yarmouth
County, MA
76 B
#161 Woburn
County, MA
76 B
#162 Braintree
County, MA
75 B
#163 South Hadley
County, MA
75 B
#164 Lynn
County, MA
74 C
#165 Marion
County, MA
74 C
#166 Norwell
County, MA
74 C
#167 Shrewsbury
County, MA
74 C
#168 Sutton
County, MA
74 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.