City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10129
Mediapolis
County, IA
50 D
#10130 Memphis
County, MO
50 D
#10131 Montclair
County, CA
50 D
#10132 Mt Carroll
County, IL
50 D
#10133 Murrayville
County, IL
50 D
#10134 Nashville
County, NC
50 D
#10135 North Kingstown
County, RI
50 D
#10136 Northampton
County, MA
50 D
#10137 Nowata
County, OK
50 D
#10138 Oologah
County, OK
50 D
#10139 Patterson
County, LA
50 D
#10140 Pinckneyville
County, IL
50 D
#10141 Port Arthur
County, TX
50 D
#10142 Randolph
County, MS
50 D
#10143 Ringgold
County, LA
50 D
#10144 Safford
County, AZ
50 D
#10145 Salem
County, KY
50 D
#10146 Sanford
County, FL
50 D
#10147 Savanna
County, IL
50 D
#10148 Shawnee
County, OK
50 D
#10149 Sopchoppy
County, FL
50 D
#10150 South Egremont
County, MA
50 D
#10151 South Roxana
County, IL
50 D
#10152 Sweet Springs
County, MO
50 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.