WaterQ

City Water Quality Rankings

11,561 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#361
Greentown
County, IN
100 A
#362
Greenville
County, RI
100 A
#363
Greenville
County, WI
100 A
#364
Greenwood
County, SC
100 A
#365
Grizzly Flats
County, CA
100 A
#366
Grosse Pointe Shores
County, MI
100 A
#367
Grove City
County, OH
100 A
#368
Groveland
County, IL
100 A
#369
Gualala
County, CA
100 A
#370
Gunnison
County, CO
100 A
#371
Guyton
County, GA
100 A
#372
Hallowell
County, ME
100 A
#373
Halls
County, TN
100 A
#374
Hamburg
County, AR
100 A
#375
Hampden
County, ME
100 A
#376
Hancocks Bridge
County, NJ
100 A
#377
Hanover
County, VA
100 A
#378
Happy Valley
County, OR
100 A
#379
Hardin
County, IL
100 A
#380
Harpersville
County, AL
100 A
#381
Harrison
County, MI
100 A
#382
Harrison Township
County, MI
100 A
#383
Hartford
County, WI
100 A
#384
Hartland
County, MI
100 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.

Explore More Water Quality Data