City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8449
Bucyrus
County, OH
72 C
#8450 Buffalo
County, MO
72 C
#8451 Burley
County, ID
72 C
#8452 Butler
County, NJ
72 C
#8453 Caliente
County, NV
72 C
#8454 Callaway
County, FL
72 C
#8455 Cannon Afb
County, NM
72 C
#8456 Carpentersville
County, IL
72 C
#8457 Carter
County, OK
72 C
#8458 Chester
County, IL
72 C
#8459 Chocowinity
County, NC
72 C
#8460 Clarion
County, IA
72 C
#8461 Clay
County, KY
72 C
#8462 Clinton
County, LA
72 C
#8463 Colonial Beach
County, VA
72 C
#8464 Corry
County, PA
72 C
#8465 Crawford
County, MS
72 C
#8466 Danville
County, VA
72 C
#8467 Defuniak Springs
County, FL
72 C
#8468 Denison
County, TX
72 C
#8469 Des Plaines
County, IL
72 C
#8470 Donaldsonville
County, LA
72 C
#8471 Downsville
County, LA
72 C
#8472 Draper
County, UT
72 C
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.