City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9145
Morrisdale
County, PA
66 C
#9146 Mound City
County, KS
66 C
#9147 Mount Arlington
County, NJ
66 C
#9148 Mount Vernon
County, IL
66 C
#9149 Newton
County, NC
66 C
#9150 Okolona
County, MS
66 C
#9151 Ortonville
County, MI
66 C
#9152 Plymouth
County, NC
66 C
#9153 Port O Connor
County, TX
66 C
#9154 Progreso
County, TX
66 C
#9155 Reno
County, TX
66 C
#9156 Richland
County, MO
66 C
#9157 Richmond
County, KY
66 C
#9158 Riddle
County, OR
66 C
#9159 Roby
County, TX
66 C
#9160 Rockwell
County, IA
66 C
#9161 Saint David
County, AZ
66 C
#9162 Saint Robert
County, MO
66 C
#9163 Salt Lick
County, KY
66 C
#9164 Sanbornville
County, NH
66 C
#9165 Sault Ste. Marie
County, MI
66 C
#9166 Sayre
County, PA
66 C
#9167 Sheffield
County, PA
66 C
#9168 Shelburne Falls
County, MA
66 C
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.