City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10969
Belleville
County, NJ
0 F
#10970 Bellevue
County, ID
0 F
#10971 Belmont
County, LA
0 F
#10972 Beloit
County, KS
0 F
#10973 Benavides
County, TX
0 F
#10974 Bernice
County, LA
0 F
#10975 Bessemer City
County, NC
0 F
#10976 Bethel
County, CT
0 F
#10977 Bethel
County, AK
0 F
#10978 Bethlehem
County, NH
0 F
#10979 Big Bend
County, WV
0 F
#10980 Big Spring
County, TX
0 F
#10981 Bivins
County, TX
0 F
#10982 Blackfoot
County, ID
0 F
#10983 Blackwell
County, OK
0 F
#10984 Blair
County, OK
0 F
#10985 Blanco
County, NM
0 F
#10986 Blanco
County, TX
0 F
#10987 Blanding
County, UT
0 F
#10988 Bloomfield
County, IA
0 F
#10989 Blooming Grove
County, NY
0 F
#10990 Bogalusa
County, LA
0 F
#10991 Boise City
County, OK
0 F
#10992 Boley
County, OK
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.