City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10297
Gorham
County, IL
46 D
#10298 Industry
County, TX
46 D
#10299 Jackman
County, ME
46 D
#10300 Loreauville
County, LA
46 D
#10301 Matamoras
County, PA
46 D
#10302 Mebane
County, NC
46 D
#10303 Mesilla
County, NM
46 D
#10304 Norridge
County, IL
46 D
#10305 North Caldwell
County, NJ
46 D
#10306 Ottawa
County, IL
46 D
#10307 Page
County, AZ
46 D
#10308 Panora
County, IA
46 D
#10309 Payson
County, AZ
46 D
#10310 Pflugerville
County, TX
46 D
#10311 Port St Lucie
County, FL
46 D
#10312 Rochelle
County, IL
46 D
#10313 Rollinsford
County, NH
46 D
#10314 Ruidoso
County, NM
46 D
#10315 Rutland
County, MA
46 D
#10316 Salmon
County, ID
46 D
#10317 Silver Springs
County, NV
46 D
#10318 Tomah
County, WI
46 D
#10319 Topsail Beach
County, NC
46 D
#10320 Versailles
County, KY
46 D
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.