City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3289
Grantville
County, PA
94 A
#3290 Greeley
County, CO
94 A
#3291 Green Springs
County, OH
94 A
#3292 Greencastle
County, PA
94 A
#3293 Greenfield
County, IA
94 A
#3294 Greenfield
County, OH
94 A
#3295 Grifton
County, NC
94 A
#3296 Guadalupe
County, CA
94 A
#3297 Gulf Breeze
County, FL
94 A
#3298 Gulfstream
County, FL
94 A
#3299 Gurdon
County, AR
94 A
#3300 Gwinn
County, MI
94 A
#3301 Haines City
County, FL
94 A
#3302 Hammond
County, WI
94 A
#3303 Hampton
County, AR
94 A
#3304 Hanover
County, IN
94 A
#3305 Harbert
County, MI
94 A
#3306 Harbor Springs
County, MI
94 A
#3307 Harrisonburg
County, VA
94 A
#3308 Harrogate
County, TN
94 A
#3309 Hastings
County, MI
94 A
#3310 Havana
County, IL
94 A
#3311 Hawley
County, TX
94 A
#3312 Hayden
County, AL
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.