City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2065
Hummelstown
County, PA
97 A
#2066 Inman
County, KS
97 A
#2067 Jacksonville
County, OR
97 A
#2068 Jasper
County, IN
97 A
#2069 Johnson City
County, TN
97 A
#2070 Keizer
County, OR
97 A
#2071 Kinsey
County, AL
97 A
#2072 La Porte
County, TX
97 A
#2073 Lac Du Flambeau
County, WI
97 A
#2074 Lagrange
County, IL
97 A
#2075 Lakeport
County, CA
97 A
#2076 Lexington
County, AL
97 A
#2077 Liberty
County, IN
97 A
#2078 Loudon
County, TN
97 A
#2079 Madera
County, CA
97 A
#2080 Martins Ferry
County, OH
97 A
#2081 Meade
County, KS
97 A
#2082 Medina
County, NY
97 A
#2083 Menomonie
County, WI
97 A
#2084 Mequon
County, WI
97 A
#2085 Miamisburg
County, OH
97 A
#2086 Millersville
County, MD
97 A
#2087 Milton-Freewater
County, OR
97 A
#2088 Minneapolis
County, KS
97 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.