City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10921
St. Clairsville
County, OH
2 F
#10922 Altoona
County, PA
1 F
#10923 Anchorage
County, AK
1 F
#10924 Deanville
County, TX
1 F
#10925 Aibonito
County, PR
0 F
#10926 Akron
County, IA
0 F
#10927 Alanta
County, LA
0 F
#10928 Aledo
County, TX
0 F
#10929 Alta
County, UT
0 F
#10930 Alto
County, NM
0 F
#10931 Altoona
County, IA
0 F
#10932 Altus
County, OK
0 F
#10933 Alum Creek
County, WV
0 F
#10934 Amber
County, OK
0 F
#10935 Anadarko
County, OK
0 F
#10936 Anchor Point
County, AK
0 F
#10937 Ancora
County, NJ
0 F
#10938 Andrews
County, TX
0 F
#10939 Andrews
County, IN
0 F
#10940 Angel Fire
County, NM
0 F
#10941 Anthony
County, TX
0 F
#10942 Antlers
County, OK
0 F
#10943 Apache
County, OK
0 F
#10944 Apache Junction
County, AZ
0 F
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.