City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6649
Charleston
County, AR
83 B
#6650 Chestertown
County, MD
83 B
#6651 Clayton
County, NC
83 B
#6652 Cleveland
County, MS
83 B
#6653 Concord
County, MA
83 B
#6654 Conway
County, AR
83 B
#6655 Conyers
County, GA
83 B
#6656 Craig
County, MO
83 B
#6657 Crystal Beach
County, TX
83 B
#6658 Cumberland City
County, TN
83 B
#6659 Danville
County, OH
83 B
#6660 Davenport
County, FL
83 B
#6661 Dayton
County, OH
83 B
#6662 Denmark
County, WI
83 B
#6663 Dollar Bay
County, MI
83 B
#6664 Dryden
County, VA
83 B
#6665 Eagle River
County, WI
83 B
#6666 East Chicago
County, IN
83 B
#6667 East Helena
County, MT
83 B
#6668 Eaton
County, CO
83 B
#6669 Emerald Isle
County, NC
83 B
#6670 Ethete
County, WY
83 B
#6671 Fairbury
County, NE
83 B
#6672 Felton
County, DE
83 B
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.