City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10657
Shinnston
County, WV
35 F
#10658 Vandalia
County, IL
35 F
#10659 Willcox
County, AZ
35 F
#10660 Zapata
County, TX
35 F
#10661 Barre
County, VT
34 F
#10662 Bartlett
County, TX
34 F
#10663 Carlisle
County, IN
34 F
#10664 Centerton
County, AR
34 F
#10665 Deatsville
County, AL
34 F
#10666 Flinton
County, PA
34 F
#10667 Fort Madison
County, IA
34 F
#10668 Francis
County, UT
34 F
#10669 Illiopolis
County, IL
34 F
#10670 Jones
County, OK
34 F
#10671 Kingsland
County, GA
34 F
#10672 Lenox
County, IA
34 F
#10673 Liberty
County, NC
34 F
#10674 Makanda
County, IL
34 F
#10675 Malden
County, MO
34 F
#10676 Newkirk
County, OK
34 F
#10677 Okeechobee
County, FL
34 F
#10678 Palm Bay
County, FL
34 F
#10679 Penuelas
County, PR
34 F
#10680 Peoria Heights
County, IL
34 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.