City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4705
Chicopee
County, MA
90 A
#4706 Chilhowie
County, VA
90 A
#4707 Chillicothe
County, MO
90 A
#4708 Cicero
County, IN
90 A
#4709 Circle Pines
County, MN
90 A
#4710 Clay Center
County, KS
90 A
#4711 Clear Lake
County, WI
90 A
#4712 Cleburne
County, TX
90 A
#4713 Clifton
County, NJ
90 A
#4714 Clinton
County, CT
90 A
#4715 Cloudcroft
County, NM
90 A
#4716 Cloverport
County, KY
90 A
#4717 Coffeeville
County, AL
90 A
#4718 Cohasset
County, MA
90 A
#4719 Collegeville
County, MN
90 A
#4720 Convent
County, LA
90 A
#4721 Conway
County, PA
90 A
#4722 Corunna
County, MI
90 A
#4723 Corvallis
County, OR
90 A
#4724 Coshocton
County, OH
90 A
#4725 Cottleville
County, MO
90 A
#4726 Criderville
County, OH
90 A
#4727 Crocker
County, MO
90 A
#4728 Crooks
County, SD
90 A
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.