City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9481
Dekalb
County, TX
56 D
#9482 Dennison
County, OH
56 D
#9483 Elburn
County, IL
56 D
#9484 Fielding
County, UT
56 D
#9485 Filer
County, ID
56 D
#9486 Fort Ashby
County, WV
56 D
#9487 Fort Sumner
County, NM
56 D
#9488 Foxworth
County, MS
56 D
#9489 Fruitland Park
County, FL
56 D
#9490 Galena Park
County, TX
56 D
#9491 Gallipolis
County, WV
56 D
#9492 Garber
County, OK
56 D
#9493 Glen
County, MS
56 D
#9494 Glenville
County, NY
56 D
#9495 Godley
County, TX
56 D
#9496 Harvard
County, IL
56 D
#9497 Hicksville
County, OH
56 D
#9498 Jasper
County, FL
56 D
#9499 Kaunakakai
County, HI
56 D
#9500 Kinnelon
County, NJ
56 D
#9501 Lakewood Ranch
County, FL
56 D
#9502 Louisburg
County, KS
56 D
#9503 Luthersburg
County, PA
56 D
#9504 Mancos
County, CO
56 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.