City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9913
Buffalo
County, WY
54 D
#9914 Campbell
County, MO
54 D
#9915 Carlisle
County, SC
54 D
#9916 Centre Hall
County, PA
54 D
#9917 Curwensville
County, PA
54 D
#9918 Delta
County, UT
54 D
#9919 Divernon
County, IL
54 D
#9920 Dumas
County, MS
54 D
#9921 Edcouch
County, TX
54 D
#9922 Epworth
County, IA
54 D
#9923 Ethel
County, MS
54 D
#9924 Farley
County, IA
54 D
#9925 Forest Park
County, IL
54 D
#9926 Foxworth
County, MS
54 D
#9927 Galena
County, IL
54 D
#9928 Garner
County, IA
54 D
#9929 Gladwin
County, MI
54 D
#9930 Gray
County, ME
54 D
#9931 Greenville
County, PA
54 D
#9932 Gregory
County, TX
54 D
#9933 Herscher
County, IL
54 D
#9934 Indianola
County, OK
54 D
#9935 Ingleside
County, TX
54 D
#9936 Jasper
County, FL
54 D
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.