City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3313
Helendale
County, CA
94 A
#3314 Hellertown
County, PA
94 A
#3315 Hemet
County, CA
94 A
#3316 Heppner
County, OR
94 A
#3317 Hermiston
County, OR
94 A
#3318 Hico
County, TX
94 A
#3319 Highstown
County, NJ
94 A
#3320 Hilbert
County, WI
94 A
#3321 Hodges
County, AL
94 A
#3322 Hollister
County, CA
94 A
#3323 Holloman Afb
County, NM
94 A
#3324 Holtville
County, CA
94 A
#3325 Honey Grove
County, TX
94 A
#3326 Hopewell
County, VA
94 A
#3327 Hopkins
County, MN
94 A
#3328 Howell
County, MI
94 A
#3329 Hudsonville
County, MI
94 A
#3330 Hunt
County, NY
94 A
#3331 Huntington Beach
County, CA
94 A
#3332 Huron
County, OH
94 A
#3333 Imperial Beach
County, CA
94 A
#3334 Independence
County, WI
94 A
#3335 Iowa
County, LA
94 A
#3336 Iowa Park
County, TX
94 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.