City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4273
Reedsville
County, WI
92 A
#4274 Republic
County, MO
92 A
#4275 Republic
County, WA
92 A
#4276 Richmondville
County, NY
92 A
#4277 Rindge
County, NH
92 A
#4278 Riverbank
County, CA
92 A
#4279 Riverview
County, MI
92 A
#4280 Roan Mountain
County, TN
92 A
#4281 Roanoke
County, AL
92 A
#4282 Robinson
County, TX
92 A
#4283 Rochester
County, NH
92 A
#4284 Roland
County, OK
92 A
#4285 Rollingwood
County, TX
92 A
#4286 Roodhouse
County, IL
92 A
#4287 Rossville
County, IN
92 A
#4288 Rowland Heights
County, CA
92 A
#4289 Russells Point
County, OH
92 A
#4290 Rye
County, NH
92 A
#4291 Sac City
County, IA
92 A
#4292 Saline
County, MI
92 A
#4293 Saltville
County, VA
92 A
#4294 San Andreas
County, CA
92 A
#4295 San Bernardino
County, CA
92 A
#4296 Santa Barbara
County, CA
92 A
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.