City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9193
Belmont
County, WV
65 C
#9194 Boise
County, ID
65 C
#9195 Brilliant
County, OH
65 C
#9196 Brooklyn
County, IN
65 C
#9197 Buckeye
County, AZ
65 C
#9198 Clarendon
County, TX
65 C
#9199 Como
County, MS
65 C
#9200 Crane
County, TX
65 C
#9201 Dartmouth
County, MA
65 C
#9202 Dixmoor
County, IL
65 C
#9203 Edgecliff Village
County, TX
65 C
#9204 Eustis
County, FL
65 C
#9205 Fallon
County, NV
65 C
#9206 Fayetteville
County, TN
65 C
#9207 Fernandina Beach
County, FL
65 C
#9208 Flanders
County, NJ
65 C
#9209 Florence
County, AZ
65 C
#9210 Fort Defiance
County, AZ
65 C
#9211 Fruit Heights
County, UT
65 C
#9212 Ft Defiance
County, AZ
65 C
#9213 Green Oaks
County, IL
65 C
#9214 Greenville
County, AL
65 C
#9215 Griggsville
County, IL
65 C
#9216 Hatillo
County, PR
65 C
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.