City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9025
Goffstown
County, NH
63 C
#9026 Gold Beach
County, OR
63 C
#9027 Goodwater
County, AL
63 C
#9028 Greenville
County, IL
63 C
#9029 Hagerstown
County, MD
63 C
#9030 Harvey
County, IL
63 C
#9031 Haynesville
County, LA
63 C
#9032 Hazel Crest
County, IL
63 C
#9033 Hillsboro
County, TX
63 C
#9034 Homer
County, GA
63 C
#9035 Jamestown
County, TN
63 C
#9036 Julesburg
County, CO
63 C
#9037 Lake Linden
County, MI
63 C
#9038 Leicester
County, MA
63 C
#9039 Lithopolis
County, OH
63 C
#9040 Livingston
County, TX
63 C
#9041 Lyons
County, IN
63 C
#9042 Marana
County, AZ
63 C
#9043 Marmaduke
County, AR
63 C
#9044 Martinsville
County, IN
63 C
#9045 Midway
County, GA
63 C
#9046 Milford
County, IA
63 C
#9047 Moon Township
County, PA
63 C
#9048 Morton
County, MN
63 C
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.