City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10441
Clayton
County, TX
42 F
#10442 Edgewood
County, TX
42 F
#10443 Estes Park
County, CO
42 F
#10444 Falmouth
County, MA
42 F
#10445 Florence
County, TX
42 F
#10446 Grover
County, WY
42 F
#10447 Haydenville
County, MA
42 F
#10448 Henryetta
County, OK
42 F
#10449 Jersey Shore
County, PA
42 F
#10450 Kendleton
County, TX
42 F
#10451 Kermit
County, TX
42 F
#10452 Kincaid
County, IL
42 F
#10453 Knox
County, PA
42 F
#10454 Kuttawa
County, KY
42 F
#10455 La Villa
County, TX
42 F
#10456 Laie
County, HI
42 F
#10457 Lampasas
County, TX
42 F
#10458 Memphis
County, TX
42 F
#10459 Mohave Valley
County, AZ
42 F
#10460 Mount Prospect
County, IL
42 F
#10461 New Fairfield
County, CT
42 F
#10462 New Llano
County, LA
42 F
#10463 North Andover
County, MA
42 F
#10464 North Chicago
County, IL
42 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.