City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6217
Godfrey
County, IL
85 B
#6218 Goshen
County, NY
85 B
#6219 Guanica
County, PR
85 B
#6220 Guayama
County, PR
85 B
#6221 Halifax
County, MA
85 B
#6222 Hampton
County, IL
85 B
#6223 Hardyston Twp
County, NJ
85 B
#6224 Harrisburg
County, OR
85 B
#6225 Harrisonville
County, MO
85 B
#6226 Hastings
County, NE
85 B
#6227 Henderson
County, NC
85 B
#6228 Hibbing
County, MN
85 B
#6229 Hoboken
County, NJ
85 B
#6230 Hopkins Park
County, IL
85 B
#6231 Horace
County, ND
85 B
#6232 Hot Springs
County, AR
85 B
#6233 Hutchinson
County, KS
85 B
#6234 Independence
County, CA
85 B
#6235 Indianola
County, MS
85 B
#6236 Jackson
County, CA
85 B
#6237 Jane Lew
County, WV
85 B
#6238 Jbpph
County, HI
85 B
#6239 Kendallville
County, IN
85 B
#6240 Knox
County, IN
85 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.