City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4177
Milroy
County, PA
92 A
#4178 Minster
County, OH
92 A
#4179 Monroe
County, GA
92 A
#4180 Montague Township
County, NJ
92 A
#4181 Montara
County, CA
92 A
#4182 Montezuma
County, GA
92 A
#4183 Monticello
County, AR
92 A
#4184 Montrose
County, CO
92 A
#4185 Morristown
County, IN
92 A
#4186 Moundville
County, AL
92 A
#4187 Mountain Lake
County, MN
92 A
#4188 Mt Gilead
County, OH
92 A
#4189 Mukwonago
County, WI
92 A
#4190 Munford
County, TN
92 A
#4191 Munroe Falls
County, OH
92 A
#4192 Myrtle Creek
County, OR
92 A
#4193 N Canton
County, OH
92 A
#4194 Nappanee
County, IN
92 A
#4195 Nashville
County, TN
92 A
#4196 Neeses
County, SC
92 A
#4197 New Baden
County, IL
92 A
#4198 New Hill
County, NC
92 A
#4199 New Kensington
County, PA
92 A
#4200 New London
County, OH
92 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.