City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3121
Beulah
County, ND
94 A
#3122 Blairsden
County, CA
94 A
#3123 Bloomfield
County, NE
94 A
#3124 Bloomfield Hills
County, MI
94 A
#3125 Bluffton
County, OH
94 A
#3126 Bolivar
County, TN
94 A
#3127 Booker
County, TX
94 A
#3128 Boothbay
County, ME
94 A
#3129 Botkins
County, OH
94 A
#3130 Boyertown
County, PA
94 A
#3131 Brainerd
County, MN
94 A
#3132 Brandon
County, SD
94 A
#3133 Breckenridge
County, MN
94 A
#3134 Bremerton
County, WA
94 A
#3135 Bridport
County, VT
94 A
#3136 Bristol
County, VT
94 A
#3137 Brodheadsville
County, PA
94 A
#3138 Brunswick
County, MD
94 A
#3139 Buellton
County, CA
94 A
#3140 Buffalo
County, MN
94 A
#3141 Burlington
County, KY
94 A
#3142 Buxton
County, ME
94 A
#3143 Byram Twp
County, NJ
94 A
#3144 Calhoun
County, GA
94 A
Frequently Asked Questions
How are city water quality rankings calculated?
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 US cities directly?
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.