City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7273
Hixson
County, TN
80 B
#7274 Horatio
County, AR
80 B
#7275 Humacao
County, PR
80 B
#7276 Imlay City
County, MI
80 B
#7277 Iron River
County, MI
80 B
#7278 Janesville
County, MN
80 B
#7279 Jesup
County, IA
80 B
#7280 Kawkawlin
County, MI
80 B
#7281 Keene
County, TX
80 B
#7282 Kellyton
County, AL
80 B
#7283 Kent
County, OH
80 B
#7284 Kenton
County, OH
80 B
#7285 King
County, NC
80 B
#7286 Kingsley
County, IA
80 B
#7287 Kingston
County, MA
80 B
#7288 Knoxville
County, AR
80 B
#7289 Kremmling
County, CO
80 B
#7290 La Grande
County, OR
80 B
#7291 Lacon
County, IL
80 B
#7292 Lajas
County, PR
80 B
#7293 Lake Villa
County, IL
80 B
#7294 Lanett
County, AL
80 B
#7295 Lansford
County, PA
80 B
#7296 Lebanon
County, MO
80 B
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.