City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10057
State Line
County, MS
52 D
#10058 Sunbury
County, PA
52 D
#10059 Troy
County, KS
52 D
#10060 Wilson
County, OK
52 D
#10061 Akwesasne
County, NY
51 D
#10062 Anamosa
County, IA
51 D
#10063 Aubrey
County, TX
51 D
#10064 Beaver Dam
County, KY
51 D
#10065 Chesnee
County, SC
51 D
#10066 Claude
County, TX
51 D
#10067 Deming
County, NM
51 D
#10068 Forest Lakes
County, AZ
51 D
#10069 Friona
County, TX
51 D
#10070 Gladewater
County, TX
51 D
#10071 Green Bay
County, WI
51 D
#10072 Hamilton
County, AL
51 D
#10073 Hancock
County, NY
51 D
#10074 Holly Hill
County, FL
51 D
#10075 Hopewell
County, NJ
51 D
#10076 Jordan
County, NY
51 D
#10077 Kilgore
County, TX
51 D
#10078 Lawtey
County, FL
51 D
#10079 Loose Creek
County, MO
51 D
#10080 Lytle
County, TX
51 D
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.