City Water Quality Rankings in Massachusetts
281 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#121
Saugus
County, MA
80 B
#122 Shrewsbury
County, MA
80 B
#123 West Boylston
County, MA
80 B
#124 Winchester
County, MA
80 B
#125 Greenfield
County, MA
79 B
#126 Ayer
County, MA
78 B
#127 Boylston
County, MA
78 B
#128 Braintree
County, MA
78 B
#129 Middleborough
County, MA
78 B
#130 North Attleborough
County, MA
78 B
#131 Norwood
County, MA
78 B
#132 Otis Angb
County, MA
78 B
#133 Sunderland
County, MA
78 B
#134 Swampscott
County, MA
78 B
#135 Swansea
County, MA
78 B
#136 Walpole
County, MA
78 B
#137 Waltham
County, MA
78 B
#138 West Bridgewater
County, MA
78 B
#139 Westminster
County, MA
78 B
#140 Wilbraham
County, MA
78 B
#141 Williamstown
County, MA
78 B
#142 Groton
County, MA
77 B
#143 Malden
County, MA
77 B
#144 Middleton
County, MA
77 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.