City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10873
Hudson Oaks
County, TX
24 F
#10874 Kaumakani
County, HI
24 F
#10875 Keansburg
County, NJ
24 F
#10876 Lemoore
County, CA
24 F
#10877 Lords Valley
County, PA
24 F
#10878 Mount Nebo
County, WV
24 F
#10879 Provencal
County, LA
24 F
#10880 Taylor
County, AZ
24 F
#10881 Tishomingo
County, OK
24 F
#10882 Van Vleck
County, TX
24 F
#10883 Vero Beach
County, FL
24 F
#10884 Wolfe City
County, TX
24 F
#10885 Bridgeport
County, TX
23 F
#10886 Carbondale
County, IL
23 F
#10887 Galeton
County, PA
23 F
#10888 Gilbert
County, LA
23 F
#10889 Hanover
County, MA
23 F
#10890 Lampe
County, MO
23 F
#10891 Lyons
County, OR
23 F
#10892 Maud
County, OK
23 F
#10893 Maywood
County, IL
23 F
#10894 Needles
County, CA
23 F
#10895 Wellsville
County, OH
23 F
#10896 Acton
County, MA
22 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.